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Noce E, Zobayed I, Fontenot RJ, Jumet B, Rasheed RM, Turrubiantes J, Preston DJ. Attaining Tailored Wicking Behavior with Additive Manufacturing. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024. [PMID: 39152911 DOI: 10.1021/acs.langmuir.4c01464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/19/2024]
Abstract
Additive manufacturing (AM) has opened a new pathway to create customized wicking materials. With lower manufacturing costs and a larger design space than many alternatives for wicking, AM is of particular value in fields such as thermal management and microfluidics. Fluid propagation during wicking in porous media, however, has largely remained limited to Washburnian (t ) behavior, and optimizing these materials for wicking in a variety of use cases presents a challenge. In this work, we present a method of tailoring wicking behavior to an arbitrary target function of propagation distance versus time, achieved through the use of AM to create nonuniform porous materials. Layers of parallel lines, each successive layer rotated 90° from the last, form a gridded structure with a spatially varying unit cell size for which analytical models for the capillary pressure and solid fraction and a semianalytical model for permeability were found. These models were validated with capillary rise experiments for spatially uniform porous materials over a range of solid fractions from 0.4 to 0.9. Leveraging these models and representing a nonuniform porous material as a series of Ohmic fluidic resistors, we created an inverse design algorithm that generates a wicking material with spatially varying parameters to achieve a specified target function for fluid propagation as a function of time. These materials can exhibit atypical wicking behavior, including fluid propagation displaying simple linear and piecewise linear relationships with time rather than the conventional Washburn relationship.
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Affiliation(s)
- Evan Noce
- Department of Mechanical Engineering, Rice University, Houston, Texas 77005, United States
| | - Irfan Zobayed
- Department of Mechanical Engineering, Rice University, Houston, Texas 77005, United States
| | - Richard J Fontenot
- Department of Mechanical Engineering, Rice University, Houston, Texas 77005, United States
| | - Barclay Jumet
- Department of Mechanical Engineering, Rice University, Houston, Texas 77005, United States
| | - Rawand M Rasheed
- Department of Mechanical Engineering, Rice University, Houston, Texas 77005, United States
| | - Jennifer Turrubiantes
- Department of Mechanical Engineering, Rice University, Houston, Texas 77005, United States
| | - Daniel J Preston
- Department of Mechanical Engineering, Rice University, Houston, Texas 77005, United States
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2
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Lu B, Cheng H, Qu L. Inorganic Hydrogel Based on Low-Dimensional Nanomaterials. ACS NANO 2024; 18:2730-2749. [PMID: 38221737 DOI: 10.1021/acsnano.3c11262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
Composed of three-dimensional (3D) nanoscale inorganic bones and up to 99% water, inorganic hydrogels have attracted much attention and undergone significant growth in recent years. The basic units of inorganic hydrogels could be metal nanoparticles, metal nanowires, SiO2 nanowires, graphene nanosheets, and MXene nanosheets, which are then assembled into the special porous structures by the sol-gel process or gelation via either covalent or noncovalent interactions. The high electrical and thermal conductivity, resistance to corrosion, stability across various temperatures, and high surface area make them promising candidates for diverse applications, such as energy storage, catalysis, adsorption, sensing, and solar steam generation. Besides, some interesting derivatives, such as inorganic aerogels and xerogels, can be produced through further processing, diversifying their functionalities and application domains greatly. In this context, we primarily provide a comprehensive overview of the current status of inorganic hydrogels and their derivatives, including the structures of inorganic hydrogels with various compositions, their gelation mechanisms, and their exceptional practical performance in fields related to energy and environmental applications.
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Affiliation(s)
- Bing Lu
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
- Laboratory of Flexible Electronics Technology, State Key Laboratory of Tribology in Advanced Equipment (SKLT), Tsinghua University, Beijing 100084, P. R. China
| | - Huhu Cheng
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
- Laboratory of Flexible Electronics Technology, State Key Laboratory of Tribology in Advanced Equipment (SKLT), Tsinghua University, Beijing 100084, P. R. China
| | - Liangti Qu
- Key Laboratory of Organic Optoelectronics and Molecular Engineering, Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China
- Laboratory of Flexible Electronics Technology, State Key Laboratory of Tribology in Advanced Equipment (SKLT), Tsinghua University, Beijing 100084, P. R. China
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3
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Xiong Q, Zhu X, Xu J, Yuan W, Zhang J, Kan C. Direct coating of gold nanolayers to enhance the oxidation resistance of copper nanowire flexible transparent conductive films. Phys Chem Chem Phys 2023; 25:29905-29913. [PMID: 37901954 DOI: 10.1039/d3cp04255c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
Copper nanowire-based transparent conductive films have garnered extensive attention owing to their cost-effectiveness and comparable electrical properties. However, the inherent instability of copper nanowires (Cu NWs) has curtailed their extensive utility and applicability. Herein, we present durable Cu@Au NW/PET films exhibiting elevated photoelectric attributes and remarkable flexibility. After preparing Cu NWs, the purification operation allows the purity of the Cu NWs to reach about 98%. Subsequently, Cu@Au NWs/PET flexible transparent conductive films (FTCFs) were prepared through vacuum filtration of Cu NWs and direct treatment with chloroauric acid. The resulting Cu@Au NW-based FTCFs exhibit impressive attributes including a low sheet resistance of 30 ohms per square and a high optical transmittance of 90%, resulting in an exceptional figure of merit (FOM) of 99. Remarkably, the Cu@Au NWs/PET film showed remarkable flexibility, retaining its properties after 10 000 cycles of continuous bending. Stability assessments further affirm the sheet resistance of the Cu@Au NW FTCFs remains nearly unchanged over 75 days at ambient temperature. The strategic integration of a gold nanolayer, serving as a protective coating on the Cu NWs, yields substantial enhancements in both electrical conductivity and overall stability within the Cu NW FTCF architecture. Furthermore, the obtained Cu@Au NW films exhibit rapid heating capabilities, reaching a temperature of 67 °C within 30 seconds at 3.5 V and subsequently returning to room temperature at the same rate. In summary, the introduction of a Au protective layer can effectively enhance the oxidation resistance of Cu NWs, which has great application potential in FTCFs in the field of film heaters.
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Affiliation(s)
- Quan Xiong
- College of Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China.
| | - Xingzhong Zhu
- College of Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China.
- Key Laboratory of Aerospace Information Materials and Physics (NUAA), MIIT, Nanjing 211106, China
| | - Juan Xu
- College of Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China.
- Key Laboratory of Aerospace Information Materials and Physics (NUAA), MIIT, Nanjing 211106, China
| | - Weiqiang Yuan
- College of Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China.
| | - Jizhe Zhang
- College of Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China.
| | - Caixia Kan
- College of Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China.
- Key Laboratory of Aerospace Information Materials and Physics (NUAA), MIIT, Nanjing 211106, China
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Choi J, Min J, Kim D, Kim J, Kim J, Yoon H, Lee J, Jeong Y, Kim CY, Ko SH. Hierarchical 3D Percolation Network of Ag-Au Core-Shell Nanowire-Hydrogel Composite for Efficient Biohybride Electrodes. ACS NANO 2023; 17:17966-17978. [PMID: 37668160 DOI: 10.1021/acsnano.3c04292] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/06/2023]
Abstract
Metal nanomaterials are highly valued for their enhanced surface area and electrochemical properties, which are crucial for energy devices and bioelectronics. However, their practical applications are often limited by challenges, such as scalability and dimensional constraints. In this study, we developed a synthesis method for highly porous Ag-Au core-shell nanowire foam (AACNF) using a one-pot process based on a simultaneous nanowelding synthesis method. The unique characteristics of AACNF as metal-based electrodes show the lowest density among metal-based electrodes while demonstrating high electrical conductivity (99.33-753.04 S/m) and mechanical stability. The AACNF's excellent mass transport properties enable multiscale hierarchical incorporation with functional materials including polymeric precursors and living cells. The enhanced mechanical stability at the nanowelded junctions allows AACNF-hydrogel composites to exhibit large stretching (∼700%) and 10,000 times higher electrical conductivity than hydrogel-nanowire composites without the junction. Large particles in the 1-10 μm scale, including fibroblast cells and exoelectrogenic microbes, are also successfully incorporated with AACNF. AACNF-based microbial fuel cells show high power density (∼330.1 W/m3) within the optimal density range. AACNF's distinctive ability to form a hierarchical structure with substances in various scales showcases its potential for advanced energy devices and biohybrid electrodes in the future.
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Affiliation(s)
- Joonhwa Choi
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - JinKi Min
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Dohyung Kim
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Jin Kim
- College of Veterinary Medicine, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Jinsol Kim
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Hyeokjun Yoon
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Jinwoo Lee
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Youngin Jeong
- College of Veterinary Medicine, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - C-Yoon Kim
- College of Veterinary Medicine, Konkuk University, 120, Neungdong-ro, Gwangjin-gu, Seoul, 05029, Republic of Korea
| | - Seung Hwan Ko
- Applied Nano and Thermal Science Lab, Department of Mechanical Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
- Institute of Engineering Research, Seoul National University, Gwanak-ro, Gwanak-gu, Seoul, 08826 Korea
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Li F, Song J, Niu Y, Zhang H, Niederberger M, Cheng W. Superelastic Cobalt Silicate@Resorcinol Formaldehyde Resin Core-Shell Nanobelt Aerogel Monoliths with Outstanding Fire Retardant and Thermal Insulating Capability. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2302724. [PMID: 37632322 DOI: 10.1002/smll.202302724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 08/01/2023] [Indexed: 08/27/2023]
Abstract
The practical applications of resorcinol formaldehyde resin (RFR) aerogels are prevented by their poor mechanical properties. Herein, a facile template-directed method is reported to produce macroscopic free-standing cobalt silicate (CS)@RFR core-shell nanobelt aerogels that display superelastic behavior and outstanding thermal insulating and fire-resistant capability. The synthesis relies on the polymerization of RFR on pre-formed CS nanobelts which leads to in situ formation of hydrogel monoliths that can be transformed to corresponding aerogels by a freeze-drying method. The composite nanobelt aerogel can withstand a compressive load of more than 4000 times of its own weight and fully recover after the removal of the weight. It can also sustain 1000 compressive cycles with 6.9% plastic deformation and 91.8% of the maximum stress remaining, with a constant energy loss coefficient as low as 0.16, at the set strain of 30%. The extraordinary mechanical properties are believed to be associated with the structural flexibility of the nanobelts and the RFR-reinforced joints between the crosslinked nanobelts. These inorganic-organic composite aerogels also show good thermal insulation and excellent fire-proof capability. This work provides an effective strategy for fabricating superelastic RFR-based aerogels which show promising applications in fields such as thermal insulation, energy storage, and catalyst support.
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Affiliation(s)
- Fuzhong Li
- Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, 422 Siming South Road, Xiamen, 361005, China
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen, 361005, China
- Key Laboratory of High Performance Ceramics Fibers (Xiamen University), Ministry of Education, China
| | - Jiabei Song
- Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, 422 Siming South Road, Xiamen, 361005, China
| | - Yutong Niu
- Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, 422 Siming South Road, Xiamen, 361005, China
| | - Hewei Zhang
- Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, 422 Siming South Road, Xiamen, 361005, China
| | - Markus Niederberger
- Laboratory for Multifunctional Materials, Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, Zurich, 8093, Switzerland
| | - Wei Cheng
- Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials, College of Materials, Xiamen University, 422 Siming South Road, Xiamen, 361005, China
- Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen, 361005, China
- Key Laboratory of High Performance Ceramics Fibers (Xiamen University), Ministry of Education, China
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Xu K, Wang L, Zhang Y, Tang H, Zhu L, Zhao D, Yan Z, Cao X. Graphene oxide enabled self-assembly of silver trimolybdate nanowires into robust membranes for nanosolid capture and molecular separation. NANOSCALE 2023; 15:6607-6618. [PMID: 36930160 DOI: 10.1039/d2nr06984a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
A graphene oxide (GO) assisted self-assembly strategy for growing a silver trimolybdate nanowire membrane with capabilities of nanosolid capture and small molecule separation is reported. Thanks to the GO bridges and the accurate self-assembly process, the resulting membrane exhibits outstanding mechanical properties (can withstand 4300 times its weight) and impressively high porosity (97%). On the basis of the robustness and high porosity of the membrane, column-shaped filter apparatus has been fabricated, in which the membrane served as a self-standing permeation barrier to assess its permeability and practical application as a nanosolid filter and molecule filter. The permeability test of the membrane with pure water uncovers that the membrane exhibits fast permeability while driven by hydrostatic pressure only because of its significantly high porosity. The separation test of the membrane with P25 TiO2 solution, 13 nm Au solution, and yellow-emitting CdTe QDs reveals that all the tiny nanosolids are completely removed from the solution, which suggests that the membrane is an efficient nanosolid filter. Its efficiency is increased by the induction of surface collision from numerous nanowire barriers and the deposition of nanosolids on the nanowire surface. The separation test of the membrane with a mixed-dye solution reveals that sulfur containing methylene blue (MB) molecules are highly efficiently extracted under various chemical conditions, evidencing that the membrane is an ideal molecule filter too. Its high selectivity and high efficiency originated from the Ag-S bonding between the interlayered silver ions of the silver trimolybdate nanowire and the sulfur atom of MB molecules. Based on the above results, the silver trimolybdate nanowire membrane has been applied to purify drugs, which successfully removed sulbactam sodium impurity F from sulbactam sodium, demonstrating a purity increment from 98.92% to 99.93%. The present work should provide a significant step forward to bringing macroscopic 1D nanomaterial architectures much closer to real-world applications involving isolation and enrichment of catalyst reclamation, high-value chemical recovery, drug purification, and environmental remediation.
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Affiliation(s)
- Keyi Xu
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, 321004, Zhejiang, China
- School of Biology and Chemical Engineering, Jiaxing University, Jiaxing, 314001, Zhejiang, China.
| | - Ling Wang
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, 321004, Zhejiang, China
- School of Biology and Chemical Engineering, Jiaxing University, Jiaxing, 314001, Zhejiang, China.
| | - Yuxuan Zhang
- School of Biology and Chemical Engineering, Jiaxing University, Jiaxing, 314001, Zhejiang, China.
| | - Hongwang Tang
- School of Biology and Chemical Engineering, Jiaxing University, Jiaxing, 314001, Zhejiang, China.
| | - Lianwen Zhu
- School of Biology and Chemical Engineering, Jiaxing University, Jiaxing, 314001, Zhejiang, China.
| | - Dian Zhao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Department of Chemistry, Zhejiang Normal University, Jinhua, 321004, Zhejiang, China.
| | - Zheng Yan
- School of Biology and Chemical Engineering, Jiaxing University, Jiaxing, 314001, Zhejiang, China.
| | - Xuebo Cao
- School of Biology and Chemical Engineering, Jiaxing University, Jiaxing, 314001, Zhejiang, China.
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7
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Peng F, Zhu W, Fang Y, Fu B, Chen H, Ji H, Ma X, Hang C, Li M. Ultralight and Highly Conductive Silver Nanowire Aerogels for High-Performance Electromagnetic Interference Shielding. ACS APPLIED MATERIALS & INTERFACES 2023; 15:4284-4293. [PMID: 36634254 DOI: 10.1021/acsami.2c16940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Metal-based materials possess superior electromagnetic interference (EMI) shielding performance because of their extraordinary electrical conductivity. Nevertheless, the high density and structural rigidity of metals seriously limit their applicability in portable and wearable electronic equipment. A common method for reducing the density of metal-based materials is to prepare metal nanowire aerogels by freeze-drying, but the weak connection among the nanowires results in poor mechanical and electrical properties. Herein, a facile approach is developed for the one-step synthesis of silver nanowire (AgNW) aerogels with ultralow density, good flexibility, high electrical conductivity, and a robust structure. The gel is directly formed by in situ assembly of AgNWs. The end-to-end nanojoining of AgNWs contributes to constructing an interconnected three-dimensional (3D) network, resulting in improved mechanical and electrical properties. The AgNW aerogel with an ultralow density of 4.87 mg cm-3 demonstrates a high electrical conductivity of 4584 S m-1. Moreover, the porous structure of the AgNW aerogel provides numerous interfaces for multiple reflections and scattering of EM waves, allowing them to be continuously absorbed and dissipated within the aerogel. Thus, the AgNW aerogel exhibits a superb EMI shielding effectiveness (SE) of 109.3 dB and a normalized surface specific SE (SSE/t, calculated as the SE divided by the density and thickness) of 353 183 dB cm2 g-1, significantly above that of previously known shielding materials. This work provides a new route for preparing high-performance metal nanowire aerogels and their great potential in EMI shielding.
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Affiliation(s)
- Fei Peng
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen518055, China
| | - Wenbo Zhu
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen518055, China
| | - Yi Fang
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen518055, China
| | - Bicheng Fu
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen518055, China
| | - Hongtao Chen
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen518055, China
| | - Hongjun Ji
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen518055, China
| | - Xing Ma
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen518055, China
| | - Chunjin Hang
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin150001, China
| | - Mingyu Li
- Sauvage Laboratory for Smart Materials, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen518055, China
- State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin150001, China
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Lee J, Mohraz A, Won Y. Enhanced Capillary Wicking through Hierarchically Porous Constructs Derived from Bijel Templates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:14063-14072. [PMID: 36342818 DOI: 10.1021/acs.langmuir.2c01965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Liquid capillarity through porous media can be enhanced by a rational design of hierarchically porous constructs that suggest sufficiently large liquid pathways from an upper-level hierarchy as well as capillary pressure enabled by a lower hierarchy. Here, we demonstrate a material design strategy utilizing a new class of self-assembled soft materials, called bicontinuous interfacially jammed emulsion gels (bijels), to produce hierarchically porous copper, which enables the unique combination of unprecedented control over both macropores and mesopores in a regular, uniform, and continuous arrangement. The dynamic droplet topologies on the hierarchically copper pores prove the significant enhancement in liquid capillarity compared to homogeneous porous structures. The role of nanoscale morphology in liquid infiltration is further investigated through environmental scanning electron microscopy, in which wetting through the mesopores occurs at the beginning, followed by liquid transport through macropores. This understanding on capillary wicking will allow us to design better hierarchically porous media that can address performance breakthroughs in interfacial applications, ranging from battery electrodes, cell delivery in biomedical devices, to capillary-fed thermal management systems.
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Affiliation(s)
- Jonggyu Lee
- Department of Mechanical and Aerospace Engineering, University of California, Irvine, Irvine, California92697, United States
| | - Ali Mohraz
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, Irvine, California92697, United States
- Department of Materials Science and Engineering, University of California, Irvine, Irvine, California92697, United States
| | - Yoonjin Won
- Department of Mechanical and Aerospace Engineering, University of California, Irvine, Irvine, California92697, United States
- Department of Materials Science and Engineering, University of California, Irvine, Irvine, California92697, United States
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Chen Y, Kazerooni NA, Srinivasa A, Chapkin WA, Sihn S, Roy AK, Vaddiraju S. Shape memory polymer composites (SMPCs) using interconnected nanowire network foams as reinforcements. NANOTECHNOLOGY 2022; 34:055601. [PMID: 36301680 DOI: 10.1088/1361-6528/ac9d40] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 10/25/2022] [Indexed: 06/16/2023]
Abstract
Shape memory polymers (SMPs), although offer a suite of advantages such as ease of processability and lower density, lag behind their shape memory alloy counterparts, in terms of mechanical properties such as recovery stress and cyclability. Reinforcing SMPs with inorganic nanowires and carbon nanotubes (CNTs) is a sought-after pathway for tailoring their mechanical properties. Here, inorganic nanowires also offer the added advantage of covalently binding the fillers to the surrounding polymer matrices via organic molecules. The SMP composites (SMPCs) thus obtained have well-engineered nanowire-polymer interfaces, which could be used to tune their mechanical properties. A well-known method of fabricating SMPCs involving casting dispersions of nanowires (or CNTs) in mixtures of monomers and crosslinkers typically results in marginal improvements in the mechanical properties of the fabricated SMPCs. This is owed to the constraints imposed by the rule-of-mixture principles. To circumvent this limitation, a new method for SMPC fabrication is designed and presented. This involves infiltrating polymers into pre-fabricated nanowire foams. The pre-fabricated foams were fabricated by consolidating measured quantities of nanowires and a sacrificial material, such as (NH4)2CO3, followed by heating the consolidated mixtures for subliming the sacrificial material. Similar to the case of traditional composites, use of silanes to functionalize the nanowire surfaces allowed for the formation of bonds between both the nanowire-nanowire and the nanowire-polymer interfaces. SMPCs fabricated using TiO2nanowires and SMP composed of neopentyl glycol diglycidyl ether and poly(propylene glycol) bis(2-aminopropyl ether) (Jeffamine D230) in a 2:1 molar ratio exhibited a 300% improvement in the elastic modulus relative to that of the SMP. This increase was significantly higher than SMPC made using the traditional fabrication route. Well-known powder metallurgy techniques employed for the fabrication of these SMPCs make this strategy applicable for obtaining other SMPCs of any desired shape and chemical composition.
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Affiliation(s)
- Yixi Chen
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, United States of America
| | - Nazanin Afsar Kazerooni
- Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843, United States of America
| | - Arun Srinivasa
- Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843, United States of America
| | - Wesley A Chapkin
- Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright-Patterson Air Force Base, OH 45433, United States of America
- ARCTOS Technology Solutions, Beavercreek, OH 45432, United States of America
| | - Sangwook Sihn
- Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright-Patterson Air Force Base, OH 45433, United States of America
- University of Dayton Research Institute, Structural Materials Division, Dayton, OH 45469, United States of America
| | - Ajit K Roy
- Air Force Research Laboratory, Materials and Manufacturing Directorate, AFRL/RX, Wright-Patterson Air Force Base, OH 45433, United States of America
| | - Sreeram Vaddiraju
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, United States of America
- Department of Materials Science & Engineering, Texas A&M University, College Station, TX 77843, United States of America
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10
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Touron M, Celle C, Orgéas L, Simonato JP. Hybrid Silver Nanowire-CMC Aerogels: From 1D Nanomaterials to 3D Electrically Conductive and Mechanically Resistant Lightweight Architectures. ACS NANO 2022; 16:14188-14197. [PMID: 35983915 DOI: 10.1021/acsnano.2c04288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The directed assembly of nanomaterials into 3D architectures is a powerful tool to produce macroscopic materials with tailored physical properties. We show in this article that such a process can be advantageously performed for the fabrication of lightweight electrically conductive materials. Silver nanowire aerogels (AgNWAs) with very low densities (down to ∼6 mg cm-3) were ice-templated and freeze-dried, leading to 3D shaped cellular materials based on one-dimensional nanoscopic building blocks. Due to their intrinsic moderate mechanical resistance, the potential use of pure AgNWAs in real life applications appears rather limited. We demonstrate that the addition of carboxymethylcellulose (CMC) in a 1:1 weight ratio leads to the fabrication of hybrid aerogels with highly improved mechanical properties. The molecular weight of the CMC is shown to be a critical parameter to ensure a good dispersion of the AgNWs, and thus to reach excellent performances such as a very low resistivity (0.9 ± 0.2 Ω·cm at 99.2 vol % porosity). The combination of silver nanowires with CMC-700k results in a gain higher than 7100% of the Young's modulus, from 10.4 ± 0.9 kPa (at very low density, i.e., 12 mg cm-3) for the AgNWAs to 740 ± 40 kPa for the AgNW:CMC aerogel. Electromechanical characterizations allowed us to quantify the piezoelectric properties of these hybrid aerogels. The very good elasticity and the piezoelectric behavior stability up to 100 cycles of compression under high (50%) deformation were revealed, which may be of interest for various applications such as pressure sensors.
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Affiliation(s)
- Maribel Touron
- University Grenoble Alpes, CEA, LITEN, DTNM, Grenoble 38000, France
| | - Caroline Celle
- University Grenoble Alpes, CEA, LITEN, DEHT, Grenoble 38000, France
| | - Laurent Orgéas
- University Grenoble Alpes, CNRS, Grenoble INP, 3SR Lab, Grenoble 38000, France
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11
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Ji X, Zhao J, Jung SM, Hrdina AIH, Wolf MJ, Yang X, Vaartstra G, Xie H, Luo SXL, Lu AY, Welsch RE, Wang EN, Li LJ, Kong J. Bottom-Up Synthesized All-Thermal-Catalyst Aerogels for Heat-Regenerative Air Filtration. NANO LETTERS 2021; 21:8160-8165. [PMID: 34543039 DOI: 10.1021/acs.nanolett.1c02593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Airborne particular matter (PM) pollution is an increasing global issue and alternative sources of filter fibers are now an area of significant focus. Compared with relatively mature hazardous gas treatments, state of the art high-efficiency PM filters still lack thermal decomposition ability for organic PM pollutants, such as soot from coal-fired power plants and waste-combustion incinerators, resulting in frequent replacement, high cost, and second-hand pollution. In this manuscript, we propose a bottom-up synthesis method to make the first all-thermal-catalyst air filter (ATCAF). Self-assembled from ∼50 nm diameter TiO2 fibers, ATCAF could not only capture the combustion-generated PM pollutants with >99.999% efficiency but also catalyze the complete decomposition of the as-captured hydrocarbon pollutants at high temperature. It has the potential of in situ eliminating the PM pollutants from burning of hydrocarbon materials leveraging the burning heat.
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Affiliation(s)
- Xiang Ji
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Jiayuan Zhao
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Sung Mi Jung
- Environmental Fate & Exposure Research Group, Korea Institute of Toxicology, Gyeongnam 52834, South Korea
| | - Amy I H Hrdina
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Martin J Wolf
- Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Xiulin Yang
- Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
| | - Geoffrey Vaartstra
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Helen Xie
- Sloan School of Management and Center for Statistics and Data Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Shao-Xiong Lennon Luo
- Department of Chemistry and Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Ang-Yu Lu
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Roy E Welsch
- Sloan School of Management and Center for Statistics and Data Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Evelyn N Wang
- Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Lain-Jong Li
- Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam, Hong Kong
| | - Jing Kong
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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12
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Wang X, Guo W, Zhang H, Peng P. Synthesis of Free-Standing Silver Foam via Oriented and Additive Nanojoining. ACS APPLIED MATERIALS & INTERFACES 2021; 13:38637-38646. [PMID: 34357764 DOI: 10.1021/acsami.1c12936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Silver foams with high porosity and electrical conductivity have many potential applications in energy storage, catalysis, and fuel cells. However, its application is largely hindered by the low efficiency of complicated synthesis processes. In this work, a facile and rapid bottom-up fabrication of silver foams in an aqueous solution allowing large-scale production through oriented and additive nanojoining of silver nanoplate building blocks is reported. Self-assembling of as-grown silver nanoplates facilitates the oriented nanoscale joining to align the atomic lattice, and the local additive of silver promotes diffusion and interconnection at room temperature to realize a rapid synthesis process. The freeze-dried silver foam exhibits a porosity of 95.45%, an ultralow density of 61 mg·cm-3, low thermal conductivity of 0.29 W·m-1·K-1, and high electrical conductivity of 8086 S·m-1. This oriented and locally additive nanojoining process presents a new strategy to fabricate silver foams that may also inspire the fabrications of other metal foams.
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Affiliation(s)
- Xinda Wang
- School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, P. R. China
| | - Wei Guo
- School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, P. R. China
| | - Hongqiang Zhang
- School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, P. R. China
| | - Peng Peng
- Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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13
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Charpy Impact Behavior of a Novel Stainless Steel Powder Wire Mesh Composite Porous Plate. MATERIALS 2021; 14:ma14112924. [PMID: 34071617 PMCID: PMC8198794 DOI: 10.3390/ma14112924] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 05/25/2021] [Accepted: 05/26/2021] [Indexed: 11/26/2022]
Abstract
A novel powder wire mesh composite porous plate (PWMCPP) was fabricated with 304 stainless steel powders and wire mesh as raw materials by vacuum solid-state sintering process using self-developed composite rolling mill of powder and wire mesh. The effects of different mesh volume fractions, mesh diameters, and sintering temperatures on the pore structure and Charpy impact properties of PWMCPPs were studied. The results show that PWMCPPs have different shapes and sizes of micropores. Impact toughness of PWMCPPs decreases with increasing wire mesh volume fraction, and increases first and then decreases with increasing wire mesh diameter, and increases with increasing sintering temperature. Among them, the sintering temperature has the most obvious effect on the impact toughness of PWMCPPs, when the sintering temperature increased from 1160 °C to 1360 °C, the impact toughness increased from 39.54 J/cm2 to 72.95 J/cm2, with an increased ratio of 84.5%. The tearing between layers, the fracture of the metallurgical junction, and the fracture of wire mesh are the main mechanisms of impact fractures of the novel PWMCPPs.
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14
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Niu Y, Li F, Zhao W, Cheng W. Fabrication and application of macroscopic nanowire aerogels. NANOSCALE 2021; 13:7430-7446. [PMID: 33928971 DOI: 10.1039/d0nr09236c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Assembly of nanowires into three-dimensional macroscopic aerogels not only bridges a gap between nanowires and macroscopic bulk materials but also combines the benefits of two worlds: unique structural features of aerogels and unique physical and chemical properties of nanowires, which has triggered significant progress in the design and fabrication of nanowire-based aerogels for a diverse range of practical applications. This article reviews the methods developed for processing nanowires into three-dimensional monolithic aerogels and the applications of the resultant nanowire aerogels in many emerging fields. Detailed discussions are given on gelation mechanisms involved in every preparation method and the pros and cons of the different methods. Furthermore, we systematically scrutinize the application of nanowire-based aerogels in the fields of thermal management, energy storage and conversion, catalysis, adsorbents, sensors, and solar steam generation. The unique benefits offered by nanowire-based aerogels in every application field are clarified. We also discuss how to improve the performance of nanowire-based aerogels in those fields by engineering the compositions and structures of the aerogels. Finally, we provide our perspectives on future development of nanowire-based aerogels.
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Affiliation(s)
- Yutong Niu
- College of Materials, Xiamen University, 422 Siming South Road, Xiamen, Fujian 361005, China.
| | - Fuzhong Li
- College of Materials, Xiamen University, 422 Siming South Road, Xiamen, Fujian 361005, China.
| | - Wuxi Zhao
- College of Materials, Xiamen University, 422 Siming South Road, Xiamen, Fujian 361005, China.
| | - Wei Cheng
- College of Materials, Xiamen University, 422 Siming South Road, Xiamen, Fujian 361005, China. and Fujian Key Laboratory of Materials Genome, Xiamen University, China
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15
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Kim J, Choi H, Cho SH, Hwang J, Kim HY, Lee YS. Scalable High-Efficiency Bi-Facial Solar Evaporator with a Dendritic Copper Oxide Wick. ACS APPLIED MATERIALS & INTERFACES 2021; 13:11869-11878. [PMID: 33660500 DOI: 10.1021/acsami.0c21570] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Solar thermal distillation is a promising way to harvest clean water due to its sustainability. However, the energy density of solar irradiation inevitably demands scalability of the systems. To realize practical applications, it is highly desirable to fabricate meter-scale solar evaporator panels with high capillary performance as well as optical absorptance using scalable and high-throughput fabrication methods. Here, we demonstrate a truly scalable fabrication process for a bi-facial solar evaporator with copper oxide dendrites via the hydrogen bubble templated electrochemical deposition technique. Furthermore, we construct a theoretical model combining capillarity and evaporative mass transfer, which leads to optimal operation conditions and wick characteristics, including superhydrophilicity, extreme capillary performance, and omni-angular high optical absorptance. The fabricated porous surfaces with excellent capillary performance and productivity provide a pathway toward a highly efficient bi-facial solar evaporator panel with meter-level scalability.
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Affiliation(s)
- Jungtaek Kim
- Department of Mechanical Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Hanseul Choi
- Department of Mechanical Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Seong Ho Cho
- Department of Mechanical Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Jaewoo Hwang
- Department of Mechanical Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Ho-Young Kim
- Department of Mechanical Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Yun Seog Lee
- Department of Mechanical Engineering, Seoul National University, Seoul 08826, Republic of Korea
- Inter-University Semiconductor Research Center, Seoul National University, Seoul 08826, Republic of Korea
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16
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Schmideder S, Müller H, Barthel L, Friedrich T, Niessen L, Meyer V, Briesen H. Universal law for diffusive mass transport through mycelial networks. Biotechnol Bioeng 2020; 118:930-943. [PMID: 33169831 DOI: 10.1002/bit.27622] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 10/13/2020] [Accepted: 10/31/2020] [Indexed: 01/01/2023]
Abstract
Filamentous fungal cell factories play a pivotal role in biotechnology and circular economy. Hyphal growth and macroscopic morphology are critical for product titers; however, these are difficult to control and predict. Usually pellets, which are dense networks of branched hyphae, are formed during industrial cultivations. They are nutrient- and oxygen-depleted in their core due to limited diffusive mass transport, which compromises productivity of bioprocesses. Here, we demonstrate that a generalized law for diffusive mass transport exists for filamentous fungal pellets. Diffusion computations were conducted based on three-dimensional X-ray microtomography measurements of 66 pellets originating from four industrially exploited filamentous fungi and based on 3125 Monte Carlo simulated pellets. Our data show that the diffusion hindrance factor follows a scaling law with respect to the solid hyphal fraction. This law can be harnessed to predict diffusion of nutrients, oxygen, and secreted metabolites in any filamentous pellets and will thus advance the rational design of pellet morphologies on genetic and process levels.
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Affiliation(s)
- Stefan Schmideder
- School of Life Sciences Weihenstephan, Chair of Process Systems Engineering, Technical University of Munich, Freising, Germany
| | - Henri Müller
- School of Life Sciences Weihenstephan, Chair of Process Systems Engineering, Technical University of Munich, Freising, Germany
| | - Lars Barthel
- Institute of Biotechnology, Faculty III Process Sciences, Chair of Applied and Molecular Microbiology, Technische Universität Berlin, Berlin, Germany
| | - Tiaan Friedrich
- School of Life Sciences Weihenstephan, Chair of Process Systems Engineering, Technical University of Munich, Freising, Germany
| | - Ludwig Niessen
- School of Life Sciences Weihenstephan, Chair of Technical Microbiology, Technical University of Munich, Freising, Germany
| | - Vera Meyer
- Institute of Biotechnology, Faculty III Process Sciences, Chair of Applied and Molecular Microbiology, Technische Universität Berlin, Berlin, Germany
| | - Heiko Briesen
- School of Life Sciences Weihenstephan, Chair of Process Systems Engineering, Technical University of Munich, Freising, Germany
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17
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Huang S, Feng C, Mayes ELH, Yao B, He Z, Asadi S, Alan T, Yang J. In situ synthesis of silver nanowire gel and its super-elastic composite foams. NANOSCALE 2020; 12:19861-19869. [PMID: 32970059 DOI: 10.1039/d0nr03958f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Noble-metal aerogels (NMAs) including silver aerogels have drawn increasing attention because of their highly conductive networks, large surface areas, and abundant optically/catalytically active sites. However, the current approaches of fabricating silver aerogels are tedious and time-consuming. In this regard, it is highly desirable to develop a simple and effective method for preparing silver aerogels. Herein, we report a facile strategy to fabricate silver gels via the in situ synthesis of silver nanowires (AgNWs). The obtained AgNW aerogels show superior electrical conductivity, ultralow density, and good mechanical robustness. AgNW aerogels with a density of 24.3 mg cm-3 display a conductivity of 2.1 × 105 S m-1 and a Young's modulus of 38.7 kPa. Furthermore, using an infiltration-air-drying-crosslinking technique, polydimethylsiloxane (PDMS) was introduced into 3 dimensional (3D) AgNW networks for preparing silver aerogel/elastomer composite materials. The obtained AgNW/PDMS aerogel composite exhibits outstanding elasticity while retaining excellent electrical conductivity. The fast piezoresistive response proves that the aerogel composite has a potential application for vibration sensors.
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Affiliation(s)
- Shu Huang
- School of Engineering, RMIT University, PO Box 71, Bundoora, VIC 3083, Australia.
| | - Chuang Feng
- School of Engineering, RMIT University, PO Box 71, Bundoora, VIC 3083, Australia.
| | - Edwin L H Mayes
- School of Engineering, RMIT University, PO Box 71, Bundoora, VIC 3083, Australia.
| | - Bicheng Yao
- School of Molecular Sciences, La Trobe University, VIC, Australia
| | - Zijun He
- Department of Mechanical and Aerospace Engineering, Monash University, VIC 3800, Australia
| | - Sajjad Asadi
- Department of Mechanical and Aerospace Engineering, Monash University, VIC 3800, Australia
| | - Tuncay Alan
- Department of Mechanical and Aerospace Engineering, Monash University, VIC 3800, Australia
| | - Jie Yang
- School of Engineering, RMIT University, PO Box 71, Bundoora, VIC 3083, Australia.
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18
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Poudel S, Zou A, Maroo SC. Evaporation Dynamics in Buried Nanochannels with Micropores. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:7801-7807. [PMID: 32527087 DOI: 10.1021/acs.langmuir.0c00777] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Cross-connected buried nanochannels of height ∼728 nm, with micropores of ∼2 μm diameter present at each intersection, are used in this work to numerically and experimentally study droplet-coupled evaporation dynamics at room temperature. The uniformly structured channels/pores, along with their well-defined porosity, allow for computational fluid dynamics simulations and experiments to be performed on the same geometry of samples. A water droplet is placed on top of the sample causing water to wick into the nanochannels through the micropores. After advancing, the meniscus front stabilizes when evaporation flux is balanced with the wicking flux, and it recedes once the water droplet is completely wicked in. Evaporation flux at the meniscus interface of channels/pores is estimated over time, while the flux at the water droplet interface is found to be negligible. When the meniscus recedes in the channels, local contact line regions are found to form underneath the pores, thus rapidly enhancing evaporation flux as a power-law function of time. Temporal variation of wicking flux velocity and pressure gradient in the nanochannels is also independently computed, from which the viscous resistance variation is estimated and compared to the theoretical prediction.
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Affiliation(s)
- Sajag Poudel
- Department of Mechanical & Aerospace Engineering, Syracuse University, Syracuse, New York 13244, United States
| | - An Zou
- Department of Mechanical & Aerospace Engineering, Syracuse University, Syracuse, New York 13244, United States
| | - Shalabh C Maroo
- Department of Mechanical & Aerospace Engineering, Syracuse University, Syracuse, New York 13244, United States
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19
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Janulevicius M, Klimkevičius V, Mikoliunaite L, Vengalis B, Vargalis R, Sakirzanovas S, Plausinaitiene V, Zilinskas A, Katelnikovas A. Ultralight Magnetic Nanofibrous GdPO 4 Aerogel. ACS OMEGA 2020; 5:14180-14185. [PMID: 32566886 PMCID: PMC7301591 DOI: 10.1021/acsomega.0c01980] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 05/21/2020] [Indexed: 05/05/2023]
Abstract
Anisotropic aerogels are promising bulk materials with a porous 3D structure, best known for their large surface area, low density, and extremely low thermal conductivity. Herein, we report the synthesis and some properties of ultralight magnetic nanofibrous GdPO4 aerogels. Our proposed GdPO4 aerogel synthesis route is eco-friendly and does not require any harsh precursors or conditions. The most common route for magnetic aerogel preparation is the introduction of magnetic nanoparticles into the structure during the synthesis procedure. However, the nanofibrous GdPO4 aerogel reported in this work is magnetic by itself already and no additives are required. The hydrogel used for nanofibrous GdPO4 aerogel preparation was synthesized via a hydrothermal route. The hydrogel was freeze-dried and heat-treated to induce a phase transformation from the nonmagnetic trigonal to magnetic monoclinic phase. Density of the obtained magnetic nanofibrous monoclinic GdPO4 aerogel is only ca. 8 mg/cm3.
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Affiliation(s)
- Matas Janulevicius
- Institute
of Chemistry, Vilnius University, Naugarduko 24, 03225 Vilnius, Lithuania
| | - Vaidas Klimkevičius
- Institute
of Chemistry, Vilnius University, Naugarduko 24, 03225 Vilnius, Lithuania
| | - Lina Mikoliunaite
- Institute
of Chemistry, Vilnius University, Naugarduko 24, 03225 Vilnius, Lithuania
- Center
for Physical Sciences and Technology, Saulėtekio al. 3, 10223 Vilnius, Lithuania
| | - Bonifacas Vengalis
- Center
for Physical Sciences and Technology, Saulėtekio al. 3, 10223 Vilnius, Lithuania
| | - Rokas Vargalis
- Institute
of Chemistry, Vilnius University, Naugarduko 24, 03225 Vilnius, Lithuania
| | - Simas Sakirzanovas
- Institute
of Chemistry, Vilnius University, Naugarduko 24, 03225 Vilnius, Lithuania
| | | | - Albinas Zilinskas
- Institute
of Chemistry, Vilnius University, Naugarduko 24, 03225 Vilnius, Lithuania
| | - Arturas Katelnikovas
- Institute
of Chemistry, Vilnius University, Naugarduko 24, 03225 Vilnius, Lithuania
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20
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Zhang L, Feng G. A one-step-assembled three-dimensional network of silver/polyvinylpyrrolidone (PVP) nanowires and its application in energy storage. NANOSCALE 2020; 12:10573-10583. [PMID: 32373856 DOI: 10.1039/d0nr00991a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Creating ultralight monolithic metal foams remains an outstanding challenge despite their important applications, e.g., in electronics, sensors and energy storage. Herein, a facile methodology is developed for one-step fabrication of silver/polyvinylpyrrolidone (PVP) nanowire (AgPNW) hydrogel and high-quality robust ultralight AgPNW aerogel (AgPNWA) on a large scale. The hydrogel is directly formed by in situ assembling hydrothermally-synthesized AgPNWs. The resultant ultralight AgPNWA exhibits very high electrical conductivity. The application of this one-step fabricated AgPNWA to enhance phase change materials (PCMs) for high-efficiency thermal energy storage is investigated. The AgPNWA-paraffin composite (APC) shows ∼350% thermal-efficiency enhancement, ∼463% mechanical hardening, and strong reliability against thermal cycling due to the potentially strong AgPNW-paraffin interfacial interaction. It is also observed that the thickness of the APC shrinks significantly but there is no change in its diameter during thermal cycles. Analytical models of liquid capillary filling of deformable fiber-based 3D networks are derived for the first time and are applied to analyze the thermal-cycling-induced-shape-stabilization behavior of the APC and the vaporization-induced collapse behavior of the AgPNW network. This work provides important insights into designing a facile 3D assembly of nanomaterials, and thermal energy storage materials with high performance and reliability.
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Affiliation(s)
- Lin Zhang
- Department of Mechanical Engineering, Villanova University, 800 E. Lancaster Avenue, Villanova, PA 19085, USA.
| | - Gang Feng
- Department of Mechanical Engineering, Villanova University, 800 E. Lancaster Avenue, Villanova, PA 19085, USA.
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21
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Huang J, Zeng J, Wang H, Etim UJ, Liang B, Meteku EB, Li H, Wang Y, Qiu Z, Rood MJ, Yan Z. Biomimetic fabrication of highly ordered laminae-trestle-laminae structured copper aero-sponge. NANOSCALE 2020; 12:8982-8990. [PMID: 32270797 DOI: 10.1039/c9nr10593j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Light-weight metallic aero-sponges are highly desirable for electronics, energy storage, catalysis and environmental remediation. Although several fabrication methods have been developed, the mechanical strength and the structural fatigue resistance of the metallic aero-sponges remain unsatisfactory. Loofah sponge is known for its mechanical strength and grease absorption due to its highly ordered hierarchical laminae-trestle-laminae (L-T-L) microstructure. Inspired by this structure-function relationship, we engineered a highly ordered L-T-L structured copper aero-sponge by unidirectional freeze-casting of copper nanowires (CuNWs) and polyvinyl alcohols (PVA). By this approach, water-to-ice crystallization shaped the building blocks into vertically distributed microchannels and horizontally arranged hollow pores. The copper aero-sponge exhibits anisotropic mechanical elasticity with a maximum tolerable compressive stress of 57 kPa, sustainable resilience at a strain of 75% and structure-induced hydrophobicity with a water contact angle more than 130°. The elasticity and hydrophobicity of the copper aero-sponge are also superior to those of the mimicked loofah sponge and copper aero-sponge with disordered pore structure made by the conventional freeze-casting. This work can be extended to manufacture novel bioinspired aero-sponges/aero-gels with hierarchical ordered microstructures.
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Affiliation(s)
- Jiankun Huang
- College of Science, China University of Petroleum (east), Qingdao, 266580, China.
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22
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Shao G, Hanaor DAH, Shen X, Gurlo A. Freeze Casting: From Low-Dimensional Building Blocks to Aligned Porous Structures-A Review of Novel Materials, Methods, and Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1907176. [PMID: 32163660 DOI: 10.1002/adma.201907176] [Citation(s) in RCA: 182] [Impact Index Per Article: 45.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 12/30/2019] [Indexed: 05/19/2023]
Abstract
Freeze casting, also known as ice templating, is a particularly versatile technique that has been applied extensively for the fabrication of well-controlled biomimetic porous materials based on ceramics, metals, polymers, biomacromolecules, and carbon nanomaterials, endowing them with novel properties and broadening their applicability. The principles of different directional freeze-casting processes are described and the relationships between processing and structure are examined. Recent progress in freeze-casting assisted assembly of low dimensional building blocks, including graphene and carbon nanotubes, into tailored micro- and macrostructures is then summarized. Emerging trends relating to novel materials as building blocks and novel freeze-cast geometries-beads, fibers, films, complex macrostructures, and nacre-mimetic composites-are presented. Thereafter, the means by which aligned porous structures and nacre mimetic materials obtainable through recently developed freeze-casting techniques and low-dimensional building blocks can facilitate material functionality across multiple fields of application, including energy storage and conversion, environmental remediation, thermal management, and smart materials, are discussed.
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Affiliation(s)
- Gaofeng Shao
- School of Chemistry and Materials Science, Nanjing University of Information Science & Technology, Nanjing, 210044, China
- Fachgebiet Keramische Werkstoffe/Chair of Advanced Ceramic Materials, Technische Universität Berlin, Hardenbergstr. 40, Berlin, 10623, Germany
| | - Dorian A H Hanaor
- Fachgebiet Keramische Werkstoffe/Chair of Advanced Ceramic Materials, Technische Universität Berlin, Hardenbergstr. 40, Berlin, 10623, Germany
| | - Xiaodong Shen
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
| | - Aleksander Gurlo
- Fachgebiet Keramische Werkstoffe/Chair of Advanced Ceramic Materials, Technische Universität Berlin, Hardenbergstr. 40, Berlin, 10623, Germany
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23
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Cho HJ, Kim ID, Jung SM. Multifunctional Inorganic Nanomaterial Aerogel Assembled into fSWNT Hydrogel Platform for Ultraselective NO 2 Sensing. ACS APPLIED MATERIALS & INTERFACES 2020; 12:10637-10647. [PMID: 32045199 DOI: 10.1021/acsami.9b21174] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Facile fabrication of multifunctional porous inorganic aerogels remains an outstanding challenge despite the considerable demand for extensive applications. Here, we present the production of a multifunctional porous inorganic nanomaterial aerogel by controllable surface chemistry of a functionalized SWNT (fSWNT) hydrogel platform for the first time. The versatile functional inorganic nanoparticles can be incorporated uniformly on the porous 3D fSWNT hydrogel platform through a facile dip coating method at ambient conditions. The morphology of the multifunctional inorganic aerogel is manipulated by designing the fSWNT hydrogel platform for different requirements of applications. In particular, Pt-SnO2@fSWNT aerogels exhibit high porosity and uniformly distributed ultrafine Pt and SnO2 on the fSWNT platform with controllable particle size (1.5-3.5 nm), which result in significantly high surface area (393 m2 g-1). The ultrafine Pt-SnO2@fSWNT aerogels exhibit highly sensitive (14.77% at 5 ppm) and selective NO2 sensing performance even at room temperature due to the increased active surface area and controllable porous structure of the ultrafine aerogel, which can provide fast transport and penetration of a target gas into the sensing layers. The newly designed multifunctional inorganic aerogel with ultrahigh surface area and high open porosity is a prospective materials platform of high performance gas sensors, which could be also broadly expanded to widespread applications including catalysis and energy storages.
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Affiliation(s)
- Hee-Jin Cho
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
- Advanced Nanosensor Research Center, KI Nanocentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Il-Doo Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea
- Advanced Nanosensor Research Center, KI Nanocentury, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Sung Mi Jung
- Environmental Fate & Exposure Research Group, Korea Institute of Toxicology (KIT), Jinju, Gyeongsangnam-do 52834, Republic of Korea
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Qian F, Troksa A, Fears TM, Nielsen MH, Nelson AJ, Baumann TF, Kucheyev SO, Han TYJ, Bagge-Hansen M. Gold Aerogel Monoliths with Tunable Ultralow Densities. NANO LETTERS 2020; 20:131-135. [PMID: 31622548 DOI: 10.1021/acs.nanolett.9b03445] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Herein we report the fabrication of ultralight gold aerogel monoliths with tunable densities and pore structures. Gold nanowires are prepared at the gram scale by substrate-assisted growth with uniform size, ultrathin diameters, high purity, and a high aspect ratio. Freeze-casting of suspensions of these nanowires produces free-standing, monolithic aerogels with tunable densities from 6 to 23 mg/cm3, which to the best of our knowledge represents the lowest density monolithic gold material. We also demonstrate that the pore geometries created during freeze-casting can be systematically tuned across multiple length scales by the selection of different solvents and excipients in the feedstock suspension. The mechanical behavior of porous materials depends on relative density and pore architectures.
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Affiliation(s)
- Fang Qian
- Physical and Life Sciences Directorate , Lawrence Livermore National Laboratory , Livermore , California 94550 , United States
| | - Alyssa Troksa
- Physical and Life Sciences Directorate , Lawrence Livermore National Laboratory , Livermore , California 94550 , United States
| | - Tyler M Fears
- Physical and Life Sciences Directorate , Lawrence Livermore National Laboratory , Livermore , California 94550 , United States
| | - Michael H Nielsen
- Physical and Life Sciences Directorate , Lawrence Livermore National Laboratory , Livermore , California 94550 , United States
| | - Art J Nelson
- Physical and Life Sciences Directorate , Lawrence Livermore National Laboratory , Livermore , California 94550 , United States
| | - Theodore F Baumann
- Physical and Life Sciences Directorate , Lawrence Livermore National Laboratory , Livermore , California 94550 , United States
| | - Sergei O Kucheyev
- Physical and Life Sciences Directorate , Lawrence Livermore National Laboratory , Livermore , California 94550 , United States
| | - T Yong-Jin Han
- Physical and Life Sciences Directorate , Lawrence Livermore National Laboratory , Livermore , California 94550 , United States
| | - Michael Bagge-Hansen
- Physical and Life Sciences Directorate , Lawrence Livermore National Laboratory , Livermore , California 94550 , United States
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He Z, Yang Y, Liang HW, Liu JW, Yu SH. Nanowire Genome: A Magic Toolbox for 1D Nanostructures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1902807. [PMID: 31566828 DOI: 10.1002/adma.201902807] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 07/07/2019] [Indexed: 06/10/2023]
Abstract
1D nanomaterials with high aspect ratio, i.e., nanowires and nanotubes, have inspired considerable research interest thanks to the fact that exotic physical and chemical properties emerge as their diameters approach or fall into certain length scales, such as the wavelength of light, the mean free path of phonons, the exciton Bohr radius, the critical size of magnetic domains, and the exciton diffusion length. On the basis of their components, aspect ratio, and properties, there may be imperceptible connections among hundreds of nanowires prepared by different strategies. Inspired by the heredity system in life, a new concept termed the "nanowire genome" is introduced here to clarify the relationships between hundreds of nanowires reported previously. As such, this approach will not only improve the tools incorporating the prior nanowires but also help to precisely synthesize new nanowires and even assist in the prediction on the properties of nanowires. Although the road from start-ups to maturity is long and fraught with challenges, the genetical syntheses of more than 200 kinds of nanostructures stemming from three mother nanowires (Te, Ag, and Cu) are summarized here to demonstrate the nanowire genome as a versatile toolbox. A summary and outlook on future challenges in this field are also presented.
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Affiliation(s)
- Zhen He
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Hefei Science Center of CAS, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Yuan Yang
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Hefei Science Center of CAS, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Hai-Wei Liang
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Hefei Science Center of CAS, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Jian-Wei Liu
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Hefei Science Center of CAS, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
| | - Shu-Hong Yu
- Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, CAS Center for Excellence in Nanoscience, Hefei Science Center of CAS, Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China
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26
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Yeo SJ, Oh MJ, Yoo PJ. Structurally Controlled Cellular Architectures for High-Performance Ultra-Lightweight Materials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1803670. [PMID: 30462862 DOI: 10.1002/adma.201803670] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2018] [Revised: 08/24/2018] [Indexed: 06/09/2023]
Abstract
The design and synthesis of cellular structured materials are of both scientific and technological importance since they can impart remarkably improved material properties such as low density, high mechanical strength, and adjustable surface functionality compared to their bulk counterparts. Although reducing the density of porous structures would generally result in reductions in mechanical properties, this challenge can be addressed by introducing a structural hierarchy and using mechanically reinforced constituent materials. Thus, precise control over several design factors in structuring, including the type of constituent, symmetry of architectures, and dimension of the unit cells, is extremely important for maximizing the targeted performance. The feasibility of lightweight materials for advanced applications is broadly explored due to recent advances in synthetic approaches for different types of cellular architectures. Here, an overview of the development of lightweight cellular materials according to the structural interconnectivity and randomness of the internal pores is provided. Starting from a fundamental study on how material density is associated with mechanical performance, the resulting structural and mechanical properties of cellular materials are investigated for potential applications such as energy/mass absorption and electrical and thermal management. Finally, current challenges and perspectives on high-performance ultra-lightweight materials potentially implementable by well-controlled cellular architectures are discussed.
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Affiliation(s)
- Seon Ju Yeo
- Nanophotonics Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea
| | - Min Jun Oh
- School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
| | - Pil J Yoo
- School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU), Suwon, 16419, Republic of Korea
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27
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Zhang J, Li X, Liu D, Wang S, Yan J, Lu M, Xie X, Huang L, Huang W. Stirring revealed new functions of ethylenediamine and hydrazine in the morphology control of copper nanowires. NANOSCALE 2019; 11:11902-11909. [PMID: 31184692 DOI: 10.1039/c9nr01470e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cu nanowires, as promising candidates in many fields because of their merits, are commonly prepared by the solution phase based synthesis which is a simple and scalable method. However, precise control of the morphology, particularly surface roughness, of Cu nanowires is still challenging; and moreover, detailed formation mechanisms of Cu nanowires, in solution phase based synthesis, are still unclear. We here show the morphology manipulation of Cu nanowires by adjusting the stirring rate and the amounts of ethylenediamine and hydrazine (N2H4), yielding Cu nanowires with either smooth or rough surface. Importantly, according to our experimental results and theoretical investigation, new functions of ethylenediamine and N2H4 are found, and a growth process of Cu nanowires is proposed accordingly. In addition to typically accepted roles of ethylenediamine and N2H4, we find that ethylenediamine can facilitate the growth of Cu nanowires by etching Cu oxides and even Cu on the surface of Cu nanowires. Meanwhile, N2H4 molecules can modulate the growth of Cu nanowires as a capping agent, which can be easily influenced by stirring. Additionally, the as-synthesized Cu nanowires with different morphologies exhibit different optical and catalytic properties. This study provides new fundamental insights into the growth mechanism of Cu nanowires, and thus can facilitate controlled synthesis of Cu nanowires for further applications, including electronics, catalysis, and sensing.
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Affiliation(s)
- Juan Zhang
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), Nanjing 211816, China.
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Lee J, Suh Y, Dubey PP, Barako MT, Won Y. Capillary Wicking in Hierarchically Textured Copper Nanowire Arrays. ACS APPLIED MATERIALS & INTERFACES 2019; 11:1546-1554. [PMID: 30557501 DOI: 10.1021/acsami.8b14955] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Capillary wicking through homogeneous porous media remains challenging to simultaneously optimize due to the unique transport phenomena that occur at different length scales. This challenge may be overcome by introducing hierarchical porous media, which combine tailored morphologies across multiple length scales to design for the individual transport mechanisms. Here, we fabricate hierarchical nanowire arrays consisting of vertically aligned copper nanowires (∼100 to 1000 nm length scale) decorated with dense copper oxide nanostructures (∼10 to 100 nm length scale) to create unique property sets that include a large specific surface area, high rates of fluid delivery, and the structural flexibility of vertical arrays. These hierarchical nanowire arrays possess enhanced capillary wicking ( K/ Reff = 0.004-0.023 μm) by utilizing hemispreading and are advantageous as evaporation surfaces. With the advent and acceleration of flexible electronics technologies, we measure the capillary properties of our freestanding hierarchical nanowire arrays installed on curved surfaces and observe comparable fluid delivery to flat arrays, showing the difference of 10-20%. The degree of effective inter-nanowire pore and porosity is shown to govern the capillary performance parameters, thereby this study provides the design strategy for capillary wicking materials with unique and tailored combinations of thermofluidic properties.
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Affiliation(s)
- Jonggyu Lee
- Department of Mechanical and Aerospace Engineering , University of California, Irvine , Irvine , California 92697 , United States
| | - Youngjoon Suh
- Department of Mechanical and Aerospace Engineering , University of California, Irvine , Irvine , California 92697 , United States
| | - Pranav P Dubey
- Department of Mechanical and Aerospace Engineering , University of California, Irvine , Irvine , California 92697 , United States
| | - Michael T Barako
- Department of Mechanical and Aerospace Engineering , University of California, Irvine , Irvine , California 92697 , United States
- NG Next, Northrop Grumman Corporation , Redondo Beach , California 90278 , United States
| | - Yoonjin Won
- Department of Mechanical and Aerospace Engineering , University of California, Irvine , Irvine , California 92697 , United States
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29
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Na W, Lee J, Jun J, Kim W, Kim YK, Jang J. Highly sensitive copper nanowire conductive electrode for nonenzymatic glucose detection. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2018.09.050] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Abstract
Combining 1D metal nanotubes and nanowires into cross-linked 2D and 3D architectures represents an attractive design strategy for creating tailored unsupported catalysts. Such materials complement the functionality and high surface area of the nanoscale building blocks with the stability, continuous conduction pathways, efficient mass transfer, and convenient handling of a free-standing, interconnected, open-porous superstructure. This review summarizes synthetic approaches toward metal nano-networks of varying dimensionality, including the assembly of colloidal 1D nanostructures, the buildup of nanofibrous networks by electrospinning, and direct, template-assisted deposition methods. It is outlined how the nanostructure, porosity, network architecture, and composition of such materials can be tuned by the fabrication conditions and additional processing steps. Finally, it is shown how these synthetic tools can be employed for designing and optimizing self-supported metal nano-networks for application in electrocatalysis and related fields.
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31
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Lu Y, Biswas MC, Guo Z, Jeon JW, Wujcik EK. Recent developments in bio-monitoring via advanced polymer nanocomposite-based wearable strain sensors. Biosens Bioelectron 2018; 123:167-177. [PMID: 30174272 DOI: 10.1016/j.bios.2018.08.037] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 08/15/2018] [Accepted: 08/16/2018] [Indexed: 11/26/2022]
Abstract
Recent years, an explosive growth of wearable technology has been witnessed. A highly stretchable and sensitive wearable strain sensor which can monitor motions is in great demand in various fields such as healthcare, robotic systems, prosthetics, visual realities, professional sports, entertainments, etc. An ideal strain sensor should be highly stretchable, sensitive, and robust enough for long-term use without degradation in performance. This review focuses on recent advances in polymer nanocomposite based wearable strain sensors. With the merits of highly stretchable polymeric matrix and excellent electrical conductivity of nanomaterials, polymer nanocomposite based strain sensors are successfully developed with superior performance. Unlike conventional strain gauge, new sensing mechanisms include disconnection, crack propagation, and tunneling effects leading to drastically resistance change play an important role. A rational choice of materials selection and structure design are required to achieve high sensitivity and stretchability. Lastly, prospects and challenges are discussed for future polymer nanocomposite based wearable strain sensor and their potential applications.
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Affiliation(s)
- Yang Lu
- Materials Engineering and Nanosensor [MEAN] Laboratory, Department of Chemical and Biological Engineering, The University of Alabama, P.O. Box 870203, Tuscaloosa, AL 35487, USA
| | - Manik Chandra Biswas
- Jeon Research Group, Department of Chemical and Biological Engineering, The University of Alabama, P.O. Box 870203, Tuscaloosa, AL 35487, USA
| | - Zhanhu Guo
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA; College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China
| | - Ju-Won Jeon
- Jeon Research Group, Department of Chemical and Biological Engineering, The University of Alabama, P.O. Box 870203, Tuscaloosa, AL 35487, USA; Department of Applied Chemistry, Kookmin University, Seoul, Republic of Korea.
| | - Evan K Wujcik
- Materials Engineering and Nanosensor [MEAN] Laboratory, Department of Chemical and Biological Engineering, The University of Alabama, P.O. Box 870203, Tuscaloosa, AL 35487, USA.
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Song P, Qin H, Gao HL, Cong HP, Yu SH. Self-healing and superstretchable conductors from hierarchical nanowire assemblies. Nat Commun 2018; 9:2786. [PMID: 30018323 PMCID: PMC6050250 DOI: 10.1038/s41467-018-05238-w] [Citation(s) in RCA: 108] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 05/14/2018] [Indexed: 02/06/2023] Open
Abstract
It is still a great challenge to improve deformability and fatigue-resistance of stretchable conductors when maintaining their high-level conductivity for practical use. Herein, a high-performance stretchable conductor with hierarchically ternary network and self-healing capability is demonstrated through in situ polymerizing N-isopropylacrylamide (NIPAM) on well-defined sulfur-containing molecule-modified Ag nanowire (AgNW) aerogel framework. Owing to hierarchical architecture from nanoscale to microscale and further to macroscale and strong interactions of polymer chains and AgNWs, the composite exhibits good conductivity of 93 S cm−1, excellent electromechanical stability up to superhigh tensile strain of 800% and strong fatigue-resistant ability through well accommodating the applied deformations and sharing external force in the network. Furthermore, the composite delivers a fast and strong healing capability induced by reversible Ag–S bonds, which enables the healed conductor to hold an impressive electromechanical property. These prominent demonstrations confirm this material as top performer for use as flexible, stretchable electronic devices. Stretchable conductors are important for further developments in the electronics industry, but improving the deformability when maintaining the high-level conductivity is still challenging. Here the authors demonstrate a ternary self-healing silver nanowire/polymer network as high-performance stretchable conductor.
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Affiliation(s)
- Pin Song
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, P.R. China
| | - Haili Qin
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, P.R. China
| | - Huai-Ling Gao
- Division of Nanomaterials and Chemistry, Department of Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, 230026, P.R. China
| | - Huai-Ping Cong
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, P.R. China.
| | - Shu-Hong Yu
- Division of Nanomaterials and Chemistry, Department of Chemistry, Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, 230026, P.R. China.
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Hierarchical MoS2-Coated V2O3 composite nanosheet tubes as both the cathode and anode materials for pseudocapacitors. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.04.219] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Wan YJ, Zhu PL, Yu SH, Sun R, Wong CP, Liao WH. Anticorrosive, Ultralight, and Flexible Carbon-Wrapped Metallic Nanowire Hybrid Sponges for Highly Efficient Electromagnetic Interference Shielding. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1800534. [PMID: 29847702 DOI: 10.1002/smll.201800534] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 04/21/2018] [Indexed: 05/21/2023]
Abstract
Metal-based materials with exceptional intrinsic conductivity own excellent electromagnetic interference (EMI) shielding performance. However, high density, corrosion susceptibility, and poor flexibility of the metal severely restrict their further applications in the areas of aircraft/aerospace, portable and wearable smart electronics. Herein, a lightweight, flexible, and anticorrosive silver nanowire wrapped carbon hybrid sponge (Ag@C) is fabricated and employed as ultrahigh efficiency EMI shielding material. The interconnected Ag@C hybrid sponges provide an effective way for electron transport, leading to a remarkable conductivity of 363.1 S m-1 and superb EMI shielding effectiveness of around 70.1 dB in the frequency range of 8.2-18 GHz, while the density is as low as 0.00382 g cm-3 , which are among the best performances for electrically conductive sponges/aerogels/foams by far. More importantly, the Ag@C sponge surprisingly exhibits super-hydrophobicity and strong corrosion resistance. In addition, the hybrid sponges possess excellent mechanical resilience even with a large strain (90% reversible compressibility) and an outstanding cycling stability, which is far better than the bare metallic aerogels, such as silver nanowire aerogels and copper nanowire foams. This strategy provides a facile methodology to fabricate lightweight, flexible, and anticorrosive metal-based sponge for highly efficient EMI shielding applications.
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Affiliation(s)
- Yan-Jun Wan
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, 999077, P. R. China
- Center for Advanced Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Peng-Li Zhu
- Center for Advanced Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Shu-Hui Yu
- Center for Advanced Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Rong Sun
- Center for Advanced Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Ching-Ping Wong
- Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, 999077, P. R. China
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Wei-Hsin Liao
- Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, 999077, P. R. China
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Zhao S, Han F, Li J, Meng X, Huang W, Cao D, Zhang G, Sun R, Wong CP. Advancements in Copper Nanowires: Synthesis, Purification, Assemblies, Surface Modification, and Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1800047. [PMID: 29707894 DOI: 10.1002/smll.201800047] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Revised: 02/08/2018] [Indexed: 06/08/2023]
Abstract
Copper nanowires (CuNWs) are attracting a myriad of attention due to their preponderant electric conductivity, optoelectronic and mechanical properties, high electrocatalytic efficiency, and large abundance. Recently, great endeavors are undertaken to develop controllable and facile approaches to synthesize CuNWs with high dispersibility, oxidation resistance, and zero defects for future large-scale nano-enabled materials. Herein, this work provides a comprehensive review of current remarkable advancements in CuNWs. The Review starts with a thorough overview of recently developed synthetic strategies and growth mechanisms to achieve single-crystalline CuNWs and fivefold twinned CuNWs by the reduction of Cu(I) and Cu(II) ions, respectively. Following is a discussion of CuNW purification and multidimensional assemblies comprising films, aerogels, and arrays. Next, several effective approaches to protect CuNWs from oxidation are highlighted. The emerging applications of CuNWs in diverse fields are then focused on, with particular emphasis on optoelectronics, energy storage/conversion, catalysis, wearable electronics, and thermal management, followed by a brief comment on the current challenges and future research directions. The central theme of the Review is to provide an intimate correlation among the synthesis, structure, properties, and applications of CuNWs.
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Affiliation(s)
- Songfang Zhao
- School of Material Science and Engineering, University of Jinan, Jinan, 250022, Shandong, China
| | - Fei Han
- Guangdong Provincial Key Laboratory of Materials for High Density Electronic Packaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Department of Nano Science and Technology Institute, University of Science and Technology of China, Suzhou, 215123, China
| | - Jinhui Li
- Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong, 999077, China
| | - Xiangying Meng
- School of Material Science and Engineering, University of Jinan, Jinan, 250022, Shandong, China
| | - Wangping Huang
- Guangdong Provincial Key Laboratory of Materials for High Density Electronic Packaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Department of Nano Science and Technology Institute, University of Science and Technology of China, Suzhou, 215123, China
| | - Duxia Cao
- School of Material Science and Engineering, University of Jinan, Jinan, 250022, Shandong, China
| | - Guoping Zhang
- Guangdong Provincial Key Laboratory of Materials for High Density Electronic Packaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Rong Sun
- Guangdong Provincial Key Laboratory of Materials for High Density Electronic Packaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Ching-Ping Wong
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive, Atlanta, GA, 30332, USA
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36
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Wu S, Zou M, Li Z, Chen D, Zhang H, Yuan Y, Pei Y, Cao A. Robust and Stable Cu Nanowire@Graphene Core-Shell Aerogels for Ultraeffective Electromagnetic Interference Shielding. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1800634. [PMID: 29749012 DOI: 10.1002/smll.201800634] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 03/16/2018] [Indexed: 05/03/2023]
Abstract
Cu nanowires (CuNWs) are considered as a promising candidate to develop high performance metal aerogels, yet the construction of robust and stable 3D porous structures remains challenging which severely limits their practical applications. Here, graphene-hybridized CuNW (CuNW@G) core-shell aerogels are fabricated by introducing a conformal polymeric coating and in situ transforming it into multilayered graphene seamlessly wrapped around individual CuNWs through a mild thermal annealing process. The existence of the outer graphene shell reinforces the 3D bulk structure and significantly slows down the oxidation process of CuNWs, resulting in improved mechanical property and highly stable electrical conductivity. When applied in electromagnetic interference shielding, the CuNW@G core-shell aerogels exhibit an average effectiveness of ≈52.5 dB over a wide range (from 8.2 to 18 GHz) with negligible degradation under ambient conditions for 40 d. Mechanism analysis reveals that the graphene shell with functional groups enables dual reflections on the core-shell and a multiple dielectric relaxation process, leading to enhanced dielectric loss and energy dissipation within the core-shell aerogels. The flexible core-shell-structured CuNW@G aerogels, with superior mechanical robustness and electrical stability, have potential applications in many areas such as advanced energy devices and functional composites.
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Affiliation(s)
- Shiting Wu
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, P. R. China
| | - Mingchu Zou
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Zhencheng Li
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Daqin Chen
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, P. R. China
- College of Physics and Energy, Fujian Normal University, Fuzhou, 350117, P. R. China
| | - Hui Zhang
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Yongjun Yuan
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, P. R. China
| | - Yongmao Pei
- Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing, 100871, P. R. China
| | - Anyuan Cao
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, P. R. China
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Zhang YG, Zhu YJ, Xiong ZC, Wu J, Chen F. Bioinspired Ultralight Inorganic Aerogel for Highly Efficient Air Filtration and Oil-Water Separation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:13019-13027. [PMID: 29611706 DOI: 10.1021/acsami.8b02081] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Inorganic aerogels have been attracting great interest owing to their distinctive structures and properties. However, the practical applications of inorganic aerogels are greatly restricted by their high brittleness and high fabrication cost. Herein, inspired by the cancellous bone, we have developed a novel kind of hydroxyapatite (HAP) nanowire-based inorganic aerogel with excellent elasticity, which is highly porous (porosity ≈ 99.7%), ultralight (density 8.54 mg/cm3, which is about 0.854% of water density), and highly adiabatic (thermal conductivity 0.0387 W/m·K). Significantly, the as-prepared HAP nanowire aerogel can be used as the highly efficient air filter with high PM2.5 filtration efficiency. In addition, the HAP nanowire aerogel is also an ideal candidate for continuous oil-water separation, which can be used as a smart switch to separate oil from water continuously. Compared with organic aerogels, the as-prepared HAP nanowire aerogel is biocompatible, environmentally friendly, and low-cost. Moreover, the synthetic method reported in this work can be scaled up for large-scale production of HAP nanowires, free from the use of organic solvents. Therefore, the as-prepared new kind of HAP nanowire aerogel is promising for the applications in various fields.
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Affiliation(s)
- Yong-Gang Zhang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Ying-Jie Zhu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050 , P. R. China
- University of Chinese Academy of Sciences , Beijing 100049 , P. R. China
| | - Zhi-Chao Xiong
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050 , P. R. China
| | - Jin Wu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050 , P. R. China
| | - Feng Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure , Shanghai Institute of Ceramics, Chinese Academy of Sciences , Shanghai 200050 , P. R. China
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Barako MT, Gambin V, Tice J. Integrated nanomaterials for extreme thermal management: a perspective for aerospace applications. NANOTECHNOLOGY 2018; 29:154003. [PMID: 29384132 DOI: 10.1088/1361-6528/aaabe1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Nanomaterials will play a disruptive role in next-generation thermal management for high power electronics in aerospace platforms. These high power and high frequency devices have been experiencing a paradigm shift toward designs that favor extreme integration and compaction. The reduction in form factor amplifies the intensity of the thermal loads and imposes extreme requirements on the thermal management architecture for reliable operation. In this perspective, we introduce the opportunities and challenges enabled by rationally integrating nanomaterials along the entire thermal resistance chain, beginning at the high heat flux source up to the system-level heat rejection. Using gallium nitride radio frequency devices as a case study, we employ a combination of viewpoints comprised of original research, academic literature, and industry adoption of emerging nanotechnologies being used to construct advanced thermal management architectures. We consider the benefits and challenges for nanomaterials along the entire thermal pathway from synthetic diamond and on-chip microfluidics at the heat source to vertically-aligned copper nanowires and nanoporous media along the heat rejection pathway. We then propose a vision for a materials-by-design approach to the rational engineering of complex nanostructures to achieve tunable property combinations on demand. These strategies offer a snapshot of the opportunities enabled by the rational design of nanomaterials to mitigate thermal constraints and approach the limits of performance in complex aerospace electronics.
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Affiliation(s)
- Michael T Barako
- NG Next, Northrop Grumman Corporation, Redondo Beach, CA 90278, United States of America
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39
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Qian F, Lan PC, Freyman MC, Chen W, Kou T, Olson TY, Zhu C, Worsley MA, Duoss EB, Spadaccini CM, Baumann T, Han TYJ. Ultralight Conductive Silver Nanowire Aerogels. NANO LETTERS 2017; 17:7171-7176. [PMID: 28872874 DOI: 10.1021/acs.nanolett.7b02790] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Low-density metal foams have many potential applications in electronics, energy storage, catalytic supports, fuel cells, sensors, and medical devices. Here, we report a new method for fabricating ultralight, conductive silver aerogel monoliths with predictable densities using silver nanowires. Silver nanowire building blocks were prepared by polyol synthesis and purified by selective precipitation. Silver aerogels were produced by freeze-casting nanowire aqueous suspensions followed by thermal sintering to weld the nanowire junctions. As-prepared silver aerogels have unique anisotropic microporous structures, with density precisely controlled by the nanowire concentration, down to 4.8 mg/cm3 and an electrical conductivity up to 51 000 S/m. Mechanical studies show that silver nanowire aerogels exhibit "elastic stiffening" behavior with a Young's modulus up to 16 800 Pa.
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Affiliation(s)
| | | | | | | | - Tianyi Kou
- Department of Chemistry and Biochemistry, University of California , Santa Cruz, California 95064, United States
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40
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Preston DJ, Song Y, Lu Z, Antao DS, Wang EN. Design of Lubricant Infused Surfaces. ACS APPLIED MATERIALS & INTERFACES 2017; 9:42383-42392. [PMID: 29121462 DOI: 10.1021/acsami.7b14311] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Lubricant infused surfaces (LIS) are a recently developed and promising approach to fluid repellency for applications in biology, microfluidics, thermal management, lab-on-a-chip, and beyond. The design of LIS has been explored in past work in terms of surface energies, which need to be determined empirically for each interface in a given system. Here, we developed an approach that predicts a priori whether an arbitrary combination of solid and lubricant will repel a given impinging fluid. This model was validated with experiments performed in our work as well as in literature and was subsequently used to develop a new framework for LIS with distinct design guidelines. Furthermore, insights gained from the model led to the experimental demonstration of LIS using uncoated high-surface-energy solids, thereby eliminating the need for unreliable low-surface-energy coatings and resulting in LIS repelling the lowest surface tension impinging fluid (butane, γ ≈ 13 mN/m) reported to date.
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Affiliation(s)
- Daniel J Preston
- Department of Mechanical Engineering, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Youngsup Song
- Department of Mechanical Engineering, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Zhengmao Lu
- Department of Mechanical Engineering, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Dion S Antao
- Department of Mechanical Engineering, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Evelyn N Wang
- Department of Mechanical Engineering, Massachusetts Institute of Technology , 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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41
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Kang J, Sheng J, Ji Y, Wen H, Fu XZ, Du G, Sun R, Wong CP. Copper Hydroxide Porous Nanotube Arrays Grown on Copper Foils as High-Performance Integrated Electrodes for Supercapacitors. ChemistrySelect 2017. [DOI: 10.1002/slct.201701920] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jiahui Kang
- School of Materials Science and Engineering; Nanchang University; Nanchang 330031, Jiangxi China
- Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 China
| | - Jiali Sheng
- Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 China
- Institute of Nano Science and Technology; University of Science and Technology of China; Suzhou 215123 China
| | - Yaqiang Ji
- Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 China
| | - Haoran Wen
- Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 China
| | - Xian-Zhu Fu
- Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 China
- College of Materials Science and Engineering; Shenzhen University; Shenzhen 518055, P.R. China
| | - Guoping Du
- School of Materials Science and Engineering; Nanchang University; Nanchang 330031, Jiangxi China
| | - Rong Sun
- Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 China
| | - Ching-Ping Wong
- Department Department of Electronics Engineering; The Chinese University of Hong Kong; Hong Kong China
- School of Materials Science and Engineering; Georgia Institute of Technology; Atlanta GA 30332 United States
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42
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Ziegler C, Wolf A, Liu W, Herrmann AK, Gaponik N, Eychmüller A. Moderne Anorganische Aerogele. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611552] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Christoph Ziegler
- Physical Chemistry; Technische Universität Dresden; Bergstraße 66b 01062 Dresden Deutschland
- LUMINOUS! Center of Excellence for Semiconductor Lighting and Displays School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 639798 Singapur
| | - André Wolf
- Physical Chemistry; Technische Universität Dresden; Bergstraße 66b 01062 Dresden Deutschland
| | - Wei Liu
- Physical Chemistry; Technische Universität Dresden; Bergstraße 66b 01062 Dresden Deutschland
| | - Anne-Kristin Herrmann
- Physical Chemistry; Technische Universität Dresden; Bergstraße 66b 01062 Dresden Deutschland
| | - Nikolai Gaponik
- Physical Chemistry; Technische Universität Dresden; Bergstraße 66b 01062 Dresden Deutschland
| | - Alexander Eychmüller
- Physical Chemistry; Technische Universität Dresden; Bergstraße 66b 01062 Dresden Deutschland
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43
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Ziegler C, Wolf A, Liu W, Herrmann AK, Gaponik N, Eychmüller A. Modern Inorganic Aerogels. Angew Chem Int Ed Engl 2017; 56:13200-13221. [DOI: 10.1002/anie.201611552] [Citation(s) in RCA: 221] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Indexed: 12/17/2022]
Affiliation(s)
- Christoph Ziegler
- Physical Chemistry; Technische Universität Dresden; Bergstrasse 66b 01062 Dresden Germany
- Present address: LUMINOUS! Center of Excellence for Semiconductor Lighting and Displays School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore 639798 Singapore
| | - André Wolf
- Physical Chemistry; Technische Universität Dresden; Bergstrasse 66b 01062 Dresden Germany
| | - Wei Liu
- Physical Chemistry; Technische Universität Dresden; Bergstrasse 66b 01062 Dresden Germany
| | - Anne-Kristin Herrmann
- Physical Chemistry; Technische Universität Dresden; Bergstrasse 66b 01062 Dresden Germany
| | - Nikolai Gaponik
- Physical Chemistry; Technische Universität Dresden; Bergstrasse 66b 01062 Dresden Germany
| | - Alexander Eychmüller
- Physical Chemistry; Technische Universität Dresden; Bergstrasse 66b 01062 Dresden Germany
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44
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Lu Z, Preston DJ, Antao DS, Zhu Y, Wang EN. Coexistence of Pinning and Moving on a Contact Line. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:8970-8975. [PMID: 28816460 DOI: 10.1021/acs.langmuir.7b02070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Textured surfaces are instrumental in water repellency or fluid wicking applications, where the pinning and depinning of the liquid-gas interface plays an important role. Previous work showed that a contact line can exhibit nonuniform behavior due to heterogeneities in surface chemistry or roughness. We demonstrate that such nonuniformities can be achieved even without varying the local energy barrier. Around a cylindrical pillar, an interface can reside in an intermediate state where segments of the contact line are pinned to the pillar top while the rest of the contact line moves along the sidewall. This partially pinned mode is due to the global nonaxisymmetric pattern of the surface features and exists for all textured surfaces, especially when superhydrophobic surfaces are about to be flooded or when capillary wicks are close to dryout.
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Affiliation(s)
- Zhengmao Lu
- Department of Mechanical Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Daniel J Preston
- Department of Mechanical Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Dion S Antao
- Department of Mechanical Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Yangying Zhu
- Department of Mechanical Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Evelyn N Wang
- Department of Mechanical Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
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45
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Xu X, Wang R, Nie P, Cheng Y, Lu X, Shi L, Sun J. Copper Nanowire-Based Aerogel with Tunable Pore Structure and Its Application as Flexible Pressure Sensor. ACS APPLIED MATERIALS & INTERFACES 2017; 9:14273-14280. [PMID: 28398033 DOI: 10.1021/acsami.7b02087] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Aerogel is a kind of material with high porosity and low density. However, the research on metal-based aerogel with good conductivity is quite limited, which hinders its usage in electronic devices, such as flexible pressure sensors. In this work, we successfully fabricate copper nanowire (CuNW) based aerogel through a one-pot method, and the dynamics for the assembly of CuNWs into hydrogel is intensively investigated. The "bubble controlled assembly" mechanism is put forward for the first time, according to which tunable pore structures and densities (4.3-7.5 mg cm-3) of the nanowire aerogel is achieved. Subsequently, ultralight flexible pressure sensors with tunable sensitivities (0.02 kPa-1 to 0.7 kPa-1) are fabricated from the Cu NWs aerogels, and the negative correlation behavior of the sensitivity to the density of the aerogel sensors is disclosed systematically. This work provides a versatile strategy for the fabrication of nanowire-based aerogels, which greatly broadens their application potential.
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Affiliation(s)
- Xiaojuan Xu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , 1295 Ding Xi Road, Shanghai 200050, P. R. China
- University of Chinese Academy of Sciences , 19 Yuquan Road, Beijing 100049, P. R. China
| | - Ranran Wang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , 1295 Ding Xi Road, Shanghai 200050, P. R. China
| | - Pu Nie
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , 1295 Ding Xi Road, Shanghai 200050, P. R. China
- University of Chinese Academy of Sciences , 19 Yuquan Road, Beijing 100049, P. R. China
| | - Yin Cheng
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , 1295 Ding Xi Road, Shanghai 200050, P. R. China
- University of Chinese Academy of Sciences , 19 Yuquan Road, Beijing 100049, P. R. China
| | - Xiaoyu Lu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , 1295 Ding Xi Road, Shanghai 200050, P. R. China
- University of Chinese Academy of Sciences , 19 Yuquan Road, Beijing 100049, P. R. China
| | - Liangjing Shi
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , 1295 Ding Xi Road, Shanghai 200050, P. R. China
| | - Jing Sun
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences , 1295 Ding Xi Road, Shanghai 200050, P. R. China
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46
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Zhao S, Li J, Cao D, Zhang G, Li J, Li K, Yang Y, Wang W, Jin Y, Sun R, Wong CP. Recent Advancements in Flexible and Stretchable Electrodes for Electromechanical Sensors: Strategies, Materials, and Features. ACS APPLIED MATERIALS & INTERFACES 2017; 9:12147-12164. [PMID: 28281337 DOI: 10.1021/acsami.6b13800] [Citation(s) in RCA: 151] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Stretchable and flexible sensors attached onto the surface of the human body can perceive external stimuli, thus attracting extensive attention due to their lightweight, low modulus, low cost, high flexibility, and stretchability. Recently, a myriad of efforts have been devoted to improving the performance and functionality of wearable sensors. Herein, this review focuses on recent remarkable advancements in the development of flexible and stretchable sensors. Multifunction of these wearable sensors is realized by incorporating some desired features (e.g., self-healing, self-powering, linearity, and printing). Next, focusing on the characteristics of carbon nanomaterials, nanostructured metal, conductive polymer, or their hybrid composites, two major strategies (e.g., materials that stretch and structures that stretch) and diverse design approaches have been developed to achieve highly flexible and stretchable electrodes. Strain sensing performances of recently reported sensors indicate that the appropriate choice of geometric engineering as well as intrinsically stretchable materials is essential for high-performance strain sensing. Finally, some important directions and challenges of a fully sensor-integrated wearable platform are proposed to realize their potential applications for human motion monitoring and human-machine interfaces.
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Affiliation(s)
- Songfang Zhao
- School of Material Science and Engineering, University of Jinan , Jinan 250022, Shandong, China
| | - Jinhui Li
- Guangdong Provincial Key Laboratory of Materials for High Density Electronic Packaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China
| | - Duxia Cao
- School of Material Science and Engineering, University of Jinan , Jinan 250022, Shandong, China
| | - Guoping Zhang
- Guangdong Provincial Key Laboratory of Materials for High Density Electronic Packaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China
| | - Jia Li
- School of Material Science and Engineering, University of Jinan , Jinan 250022, Shandong, China
| | - Kui Li
- School of Material Science and Engineering, University of Jinan , Jinan 250022, Shandong, China
| | - Yang Yang
- School of Material Science and Engineering, University of Jinan , Jinan 250022, Shandong, China
| | - Wei Wang
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication and Institute of Microelectronics, Peking University , Beijing 100871, China
| | - Yufeng Jin
- Shenzhen Graduate School, Peking University , Shenzhen 518055, China
| | - Rong Sun
- Guangdong Provincial Key Laboratory of Materials for High Density Electronic Packaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, China
| | - Ching-Ping Wong
- School of Materials Science and Engineering, Georgia Institute of Technology , 771 Ferst Drive, Atlanta, Georgia 30332, United States
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47
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Zhang B, Chen B, Wu J, Hao S, Yang G, Cao X, Jing L, Zhu M, Tsang SH, Teo EHT, Huang Y. The Electrochemical Response of Single Crystalline Copper Nanowires to Atmospheric Air and Aqueous Solution. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1603411. [PMID: 28026122 DOI: 10.1002/smll.201603411] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Revised: 11/24/2016] [Indexed: 06/06/2023]
Abstract
In this paper, single crystalline copper nanowires (CuNWs) have been electrochemically grown through anodic aluminum oxide template. The environmental stability of the as-obtained CuNWs in both 40% relative humidity (RH) atmosphere and 0.1 m NaOH aqueous solution has been subsequently studied. In 40% RH atmosphere, a uniform compact Cu2 O layer is formed as a function of exposure time following the logarithmic law and epitaxially covers the CuNW surfaces. It is also found that the oxide layers on CuNWs are sequentially grown when subjected to the cyclic voltammetry measurement in 0.1 m NaOH solution. An epitaxially homogeneous Cu2 O layer is initially formed over the surface of the CuNW substrates by solid-state reaction (SSR). Subsequently, the conversion of Cu2 O into epitaxial CuO based on the SSR takes place with the increase of applied potential. This CuO layer is partially dissolved in the solution forming Cu(OH)2 , which then redeposited on the CuNW surfaces (i.e., dissolution-redeposition (DR) process) giving rise to a mixed polycrystalline CuO/Cu(OH)2 layer. The further increase of applied potential allows the complete oxidation of Cu2 O into CuO to form a dual-layer structure (i.e., CuO inner layer and Cu(OH)2 outer layer) with random orientations through an enhanced DR process.
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Affiliation(s)
- Bowei Zhang
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
| | - Bensong Chen
- Temasek Laboratories, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
| | - Junsheng Wu
- Institute of Advanced Materials and Technology, University of Science and Technology Beijing, Beijing, 100083, China
| | - Shiji Hao
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
- Interdisciplinary Graduate School, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
| | - Guang Yang
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
- Interdisciplinary Graduate School, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
| | - Xun Cao
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
| | - Lin Jing
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
| | - Minmin Zhu
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
| | - Siu Hon Tsang
- Temasek Laboratories, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
| | - Edwin Hang Tong Teo
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
- School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
| | - Yizhong Huang
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
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48
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Yue Y, Ma L, Sun J, Jeong HK, Liang H. Super-hierarchical Ni/porous-Ni/V2O5 nanocomposites. RSC Adv 2017. [DOI: 10.1039/c7ra06446b] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Super-hierarchical nanocomposites were designed and fabricated using a facile, low-cost, and environmentally-friendly method. The profound specific surface area and porosity increased heat dissipation for about 150 times.
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Affiliation(s)
- Yuan Yue
- Department of Materials Science and Engineering
- Texas A&M University
- College Station
- USA
| | - Lian Ma
- Department of Mechanical Engineering
- Texas A&M University
- College Station
- USA
| | - Jingze Sun
- Department of Chemical Engineering
- Texas A&M University
- College Station
- USA
| | - Hae-Kwon Jeong
- Department of Materials Science and Engineering
- Texas A&M University
- College Station
- USA
- Department of Chemical Engineering
| | - Hong Liang
- Department of Materials Science and Engineering
- Texas A&M University
- College Station
- USA
- Department of Mechanical Engineering
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49
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Wen D, Eychmüller A. 3D assembly of preformed colloidal nanoparticles into gels and aerogels: function-led design. Chem Commun (Camb) 2017; 53:12608-12621. [DOI: 10.1039/c7cc03862c] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Nanoparticle-based aerogels combine the properties of traditional aerogels with those of nanoparticles, and hold promise for various applications following a function-led design.
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Affiliation(s)
- Dan Wen
- Center for Nano Energy Materials
- School of Materials Science and Engineering
- Northwestern Polytechnical University
- Xi’an 710072
- China
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Yersak AS, Lewis RJ, Liew LA, Wen R, Yang R, Lee YC. Atomic Layer Deposited Coatings on Nanowires for High Temperature Water Corrosion Protection. ACS APPLIED MATERIALS & INTERFACES 2016; 8:32616-32623. [PMID: 27933818 DOI: 10.1021/acsami.6b11963] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Two-phase liquid-cooling technologies incorporating micro/nanostructured copper or silicon surfaces have been established as a promising thermal management solution to keep up with the increasing power demands of high power electronics. However, the reliability of nanometer-scale features of copper and silicon in these devices has not been well investigated. In this work, accelerated corrosion testing reveals that copper nanowires are not immune to corrosion in deaerated pure hot water. To solve this problem, we investigate atomic layer deposition (ALD) TiO2 coatings grown at 150 and 175 °C. We measured no difference in coating thickness for a duration of 12 days. Using a core/shell approach, we grow ALD TiO2/Al2O3 protective coatings on copper nanowires and demonstrate a preservation of nanoengineered copper features. These studies have identified a critical reliability problem of nanoscale copper and silicon surfaces in deaerated, pure, hot water and have successfully demonstrated a reliable solution using ALD TiO2/Al2O3 protective coatings.
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Affiliation(s)
- Alexander S Yersak
- Department of Mechanical Engineering, University of Colorado , Boulder, Colorado 80309-0427, United States
| | - Ryan J Lewis
- Department of Mechanical Engineering, University of Colorado , Boulder, Colorado 80309-0427, United States
| | - Li-Anne Liew
- Department of Mechanical Engineering, University of Colorado , Boulder, Colorado 80309-0427, United States
| | - Rongfu Wen
- Department of Mechanical Engineering, University of Colorado , Boulder, Colorado 80309-0427, United States
| | - Ronggui Yang
- Department of Mechanical Engineering, University of Colorado , Boulder, Colorado 80309-0427, United States
| | - Yung-Cheng Lee
- Department of Mechanical Engineering, University of Colorado , Boulder, Colorado 80309-0427, United States
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