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Liao Y, Zhao G, Ling Y, Yan Z, Yu Q. Trimethylsilane Plasma-Nanocoated Silver Nanowires for Improved Stability. MATERIALS (BASEL, SWITZERLAND) 2024; 17:3635. [PMID: 39124299 PMCID: PMC11313449 DOI: 10.3390/ma17153635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Revised: 07/12/2024] [Accepted: 07/19/2024] [Indexed: 08/12/2024]
Abstract
The objective of this study was to evaluate the effectiveness of trimethylsilane (TMS) plasma nanocoatings in protecting silver nanowires (AgNWs) from degradation and thus to improve their stability. TMS plasma nanocoatings at various thicknesses were deposited onto AgNWs that were prepared on three different substrates, including glass, porous styrene-ethylene-butadiene-styrene (SEBS), and poly-L-lactic acid (PLLA). The experimental results showed that the application of TMS plasma nanocoatings to AgNWs induced little increase, up to ~25%, in their electrical resistance but effectively protected them from degradation. Over a two-month storage period in summer (20-22 °C, 55-70% RH), the resistance of the coated AgNWs on SEBS increased by only ~90%, compared to a substantial increase of ~700% for the uncoated AgNWs. On glass, the resistance of the coated AgNWs increased by ~30%, versus ~190% for the uncoated ones. When stored in a 37 °C phosphate-buffered saline (PBS) solution for 2 months, the resistance of the coated AgNWs on glass increased by ~130%, while the uncoated AgNWs saw a ~970% rise. Increasing the TMS plasma nanocoating thickness further improved the conductivity stability of the AgNWs. The nanocoatings also transformed the AgNWs' surfaces from hydrophilic to hydrophobic without significantly affecting their optical transparency. These findings demonstrate the potential of TMS plasma nanocoatings in protecting AgNWs from environmental and aqueous degradation, preserving their electrical conductivity and suitability for use in transparent electrodes and wearable electronics.
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Affiliation(s)
- Yixuan Liao
- Department of Mechanical and Aerospace Engineering, University of Missouri, Lafferre Hall, Columbia, MO 65211, USA; (Y.L.); (G.Z.); (Y.L.)
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO 65211, USA;
| | - Ganggang Zhao
- Department of Mechanical and Aerospace Engineering, University of Missouri, Lafferre Hall, Columbia, MO 65211, USA; (Y.L.); (G.Z.); (Y.L.)
| | - Yun Ling
- Department of Mechanical and Aerospace Engineering, University of Missouri, Lafferre Hall, Columbia, MO 65211, USA; (Y.L.); (G.Z.); (Y.L.)
| | - Zheng Yan
- Department of Chemical and Biomedical Engineering, University of Missouri, Columbia, MO 65211, USA;
| | - Qingsong Yu
- Department of Mechanical and Aerospace Engineering, University of Missouri, Lafferre Hall, Columbia, MO 65211, USA; (Y.L.); (G.Z.); (Y.L.)
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2
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Dao VH, Mapleback BJ. Generation of highly porous silver nanowire networks by plasma treatment and their direct application as supercapacitor electrodes. NANOSCALE 2020; 12:11868-11877. [PMID: 32490465 DOI: 10.1039/d0nr02798g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Exposure to plasma can significantly increase the surface area of silver species and their resistance to oxidation. While some work investigating plasma-treated silver has been done, limited morphologies and applications have been explored. We hereby explore this effect on silver nanowires (AgNWs) through medium-vacuum air plasma exposure time ranging between 30 s to 60 min. These plasma-treated AgNW networks are directly applied as supercapacitor electrodes, without any carbon or polymer additives that are typically employed alongside silver in energy storage applications. The plasma treatment consequently affected the electrochemical performance of AgNWs, where longer treatment times resulted in higher energy storage capacity. An increase in resistance was observed for plasma treatment times greater than or equal to 5 min, due to the switch from the percolation threshold of the metallic Ag phase to the Ag2O phase. Despite an initial drop in stored energy, an overall improvement in energy storage capacity was observed throughout cycling, where the optimal plasma treatment time of 5 min resulted in an increase of 320% of its starting value with near 100% coulombic efficiency, through the development of stable redox-active surface nanostructures.
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Affiliation(s)
- Vu H Dao
- Aerospace Division, Defence Science and Technology (DST) Group, Melbourne, VIC 3207, Australia.
| | - Benjamin J Mapleback
- Aerospace Division, Defence Science and Technology (DST) Group, Melbourne, VIC 3207, Australia.
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Toyouchi S, Wolf M, Nakao Y, Fujita Y, Inose T, Fortuni B, Hirai K, Hofkens J, De Feyter S, Hutchison J, Uji-I H. Controlled Fabrication of Optical Signal Input/Output Sites on Plasmonic Nanowires. NANO LETTERS 2020; 20:2460-2467. [PMID: 32155085 DOI: 10.1021/acs.nanolett.9b05199] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Silver nanowires have attracted considerable attention as subdiffraction limited diameter waveguides in a variety of applications including cell endoscopy and photonic integrated circuitry. Optical signal transport occurs by coupling light into propagating surface plasmons, which scatter back into light further along the wire. However, these interconversions only occur efficiently at wire ends, or at defects along the wire, which are not controlled during synthesis. Here, we overcome this limitation, demonstrating the visible laser light-induced fabrication of gold nanostructures at desired positions on silver nanowires, and their utility as efficient in/out coupling points for light. The gold nanostructures grow via plasmon-induced reduction of Au(III) and are shown to be excellent "hotspots" for surface-enhanced Raman scattering.
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Affiliation(s)
- Shuichi Toyouchi
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Mathias Wolf
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Yusuke Nakao
- Research Institute for Electronic Science (RIES), Hokkaido University, N20W10, Kita ward, Sapporo 001-0020, Hokkaido, Japan
- Division of Information Science and Technology, Graduate School of Information Science and Technology, Hokkaido University, N14W9, Kita ward, Sapporo 060-0814, Hokkaido, Japan
| | - Yasuhiko Fujita
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
- Toray Research Center, Inc., Sonoyama 3-3-7, Otsu 520-8567, Shiga, Japan
| | - Tomoko Inose
- Research Institute for Electronic Science (RIES), Hokkaido University, N20W10, Kita ward, Sapporo 001-0020, Hokkaido, Japan
- Division of Information Science and Technology, Graduate School of Information Science and Technology, Hokkaido University, N14W9, Kita ward, Sapporo 060-0814, Hokkaido, Japan
| | - Beatrice Fortuni
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - Kenji Hirai
- Research Institute for Electronic Science (RIES), Hokkaido University, N20W10, Kita ward, Sapporo 001-0020, Hokkaido, Japan
- Division of Information Science and Technology, Graduate School of Information Science and Technology, Hokkaido University, N14W9, Kita ward, Sapporo 060-0814, Hokkaido, Japan
| | - Johan Hofkens
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
- Max Plank Institute for Polymer Research, Mainz D-55128, Germany
| | - Steven De Feyter
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
| | - James Hutchison
- School of Chemistry, The University of Melbourne, Parkville 3010 Victoria, Australia
| | - Hiroshi Uji-I
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Heverlee, Belgium
- Research Institute for Electronic Science (RIES), Hokkaido University, N20W10, Kita ward, Sapporo 001-0020, Hokkaido, Japan
- Division of Information Science and Technology, Graduate School of Information Science and Technology, Hokkaido University, N14W9, Kita ward, Sapporo 060-0814, Hokkaido, Japan
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4
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Guha S, Ghimire J, Wu E, Wimley WC. Mechanistic Landscape of Membrane-Permeabilizing Peptides. Chem Rev 2019; 119:6040-6085. [PMID: 30624911 DOI: 10.1021/acs.chemrev.8b00520] [Citation(s) in RCA: 150] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Membrane permeabilizing peptides (MPPs) are as ubiquitous as the lipid bilayer membranes they act upon. Produced by all forms of life, most membrane permeabilizing peptides are used offensively or defensively against the membranes of other organisms. Just as nature has found many uses for them, translational scientists have worked for decades to design or optimize membrane permeabilizing peptides for applications in the laboratory and in the clinic ranging from antibacterial and antiviral therapy and prophylaxis to anticancer therapeutics and drug delivery. Here, we review the field of membrane permeabilizing peptides. We discuss the diversity of their sources and structures, the systems and methods used to measure their activities, and the behaviors that are observed. We discuss the fact that "mechanism" is not a discrete or a static entity for an MPP but rather the result of a heterogeneous and dynamic ensemble of structural states that vary in response to many different experimental conditions. This has led to an almost complete lack of discrete three-dimensional active structures among the thousands of known MPPs and a lack of useful or predictive sequence-structure-function relationship rules. Ultimately, we discuss how it may be more useful to think of membrane permeabilizing peptides mechanisms as broad regions of a mechanistic landscape rather than discrete molecular processes.
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Affiliation(s)
- Shantanu Guha
- Department of Biochemistry and Molecular Biology Tulane University School of Medicine , New Orleans , Louisiana 70112 , United States
| | - Jenisha Ghimire
- Department of Biochemistry and Molecular Biology Tulane University School of Medicine , New Orleans , Louisiana 70112 , United States
| | - Eric Wu
- Department of Biochemistry and Molecular Biology Tulane University School of Medicine , New Orleans , Louisiana 70112 , United States
| | - William C Wimley
- Department of Biochemistry and Molecular Biology Tulane University School of Medicine , New Orleans , Louisiana 70112 , United States
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Hassan SS, Carlson K, Mohanty SK, Canlier A. Ultra-rapid catalytic degradation of 4-nitrophenol with ionic liquid recoverable and reusable ibuprofen derived silver nanoparticles. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 237:731-739. [PMID: 29129431 DOI: 10.1016/j.envpol.2017.10.118] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 10/22/2017] [Accepted: 10/29/2017] [Indexed: 06/07/2023]
Abstract
This study reports a one-pot and eco-friendly method for the synthesis of spherical ibuprofen derived silver nanoparticles (IBU-AgNPs) in aqueous media using ibuprofen analgesics drug as capping as well as reducing agent. Formation of AgNPs occurred within a few min (less than 5 min) at room temperature without resorting to any harsh conditions and hazardous organic solvents. Synthesized AgNPs were characterized with common analytical techniques. Transmission electron microscope (TEM) images confirmed the formation of spherical particles having a size distribution in the range of 12.5 ± 1.5 nm. Employment of IBU analgesic aided the control of better size distribution and prevented agglomeration of particles. Such AgNPs solution was highly stable for more than two months when stored at ambient temperature. The IBU-AgNPs solution showed excellent ultra-rapid catalytic activity for the complete degradation of toxic 4-nitrophenol (4-NPh) into non-toxic 4-aminophenol (4-APh) within 40 s. AgNPs were recovered with the help of water insoluble-room temperature ionic liquid and reused with enhanced catalytic potential. This method provides a novel, rapid and economical alternative for the treatment of toxic organic pollutants to maintain water quality and environmental safety against water pollution. It is extendable for the control of other reducible contaminants in water as well. Furthermore, this catalytic activity for an effective degradation of organic toxins is expected to play a crucial role for achieving the Sustainable Development Goal 6 set by United Nations.
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Affiliation(s)
- Syeda Sara Hassan
- US.-Pakistan Center for Advanced Studies in Water (USPCASW), Mehran University of Engineering & Technology (MUET), Jamshoro, Sindh, 76062, Pakistan; Department of Metallurgical Engineering, University of Utah, 201 Presidents Circle, Salt Lake City, UT 84112, USA; Department of Chemical Engineering, University of Utah, 201 Presidents Circle, Salt Lake City, UT 84112, USA.
| | - Krista Carlson
- Department of Metallurgical Engineering, University of Utah, 201 Presidents Circle, Salt Lake City, UT 84112, USA
| | - Swomitra Kumar Mohanty
- Department of Metallurgical Engineering, University of Utah, 201 Presidents Circle, Salt Lake City, UT 84112, USA; Department of Chemical Engineering, University of Utah, 201 Presidents Circle, Salt Lake City, UT 84112, USA
| | - Ali Canlier
- Department of Chemical Engineering and Applied Chemistry, College of Engineering, Chungnam National University, Daejeon 34134, South Korea; Department of Materials Science and Nanotechnology Engineering, Abdullah Gul University, Kayseri 38080, Turkey
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6
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Zhang S, Geryak R, Geldmeier J, Kim S, Tsukruk VV. Synthesis, Assembly, and Applications of Hybrid Nanostructures for Biosensing. Chem Rev 2017; 117:12942-13038. [DOI: 10.1021/acs.chemrev.7b00088] [Citation(s) in RCA: 206] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Shuaidi Zhang
- School of Materials Science
and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
| | - Ren Geryak
- School of Materials Science
and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
| | - Jeffrey Geldmeier
- School of Materials Science
and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
| | - Sunghan Kim
- School of Materials Science
and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
| | - Vladimir V. Tsukruk
- School of Materials Science
and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States
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7
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Liu KG, Abbasi AR, Azadbakht A, Hu ML, Morsali A. Deposition of silver nanoparticles on polyester fiber under ultrasound irradiations. ULTRASONICS SONOCHEMISTRY 2017; 34:13-18. [PMID: 27773227 DOI: 10.1016/j.ultsonch.2016.04.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 04/04/2016] [Accepted: 04/05/2016] [Indexed: 05/14/2023]
Abstract
The polyester fiber containing Ag nanoparticles was prepared through the chemical reduction under ultrasound irradiation. Influences of reduction reagents on the morphological properties of Ag nanoparticles@polyester fiber were studied. The sizes of metallic nanoparticles vary significantly with the types of reduction reagents used in the synthesis. A strong reduction reaction promotes a fast reaction rate and favors the formation of smaller nanoparticle. A weak reduction reagent induces a slow reaction rate and favors relatively larger particles. The products were investigated by means of scanning electron microscopy (SEM) and X-ray powder diffraction (XRPD).
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Affiliation(s)
- Kuan-Guan Liu
- Key Laboratory of Ningxia for Photovoltaic Materials, Ningxia University, Yin-Chuan 750021, China
| | - Amir Reza Abbasi
- Faculty of Chemistry, Razi University, 67194 Kermanshah, Islamic Republic of Iran
| | - Azadeh Azadbakht
- Department of Chemistry, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran
| | - Mao-Lin Hu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, China
| | - Ali Morsali
- Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.
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8
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Shahzad A, Chung M, Yu T, Kim WS. A Simple and Fast Aqueous-Phase Synthesis of Ultra-Highly Concentrated Silver Nanoparticles and Their Catalytic Properties. Chem Asian J 2015; 10:2512-7. [DOI: 10.1002/asia.201500672] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Indexed: 11/05/2022]
Affiliation(s)
- Aasim Shahzad
- Department of Chemical Engineering; College of Engineering; Kyung Hee University; Youngin 446-701 Korea
| | - Minsub Chung
- Department of Chemical Engineering; Hongik University; Seoul 121-791 Korea
| | - Taekyung Yu
- Department of Chemical Engineering; College of Engineering; Kyung Hee University; Youngin 446-701 Korea
| | - Woo-Sik Kim
- Department of Chemical Engineering; College of Engineering; Kyung Hee University; Youngin 446-701 Korea
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9
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Lin L, Huang H, Sivayoganathan M, Liu L, Zou G, Duley WW, Zhou Y. Assembly of silver nanoparticles on nanowires into ordered nanostructures with femtosecond laser radiation. APPLIED OPTICS 2015; 54:2524-2531. [PMID: 25968544 DOI: 10.1364/ao.54.002524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 02/16/2015] [Indexed: 06/04/2023]
Abstract
In this work, we show that well-ordered structures of silver nanoparticles on nanowire substrates can be produced by irradiation with femtosecond (fs) laser pulses at fluences ranging from 10.3 to 15.9 mJ/cm2 if the direction of polarization is parallel to the long axis of the nanowire. Experimental results show that a uniformly spaced distribution of nanoparticles is more readily produced on nanowires with lengths L≤2λ, where λ=800 nm is the laser wavelength. The distribution of nanoparticles is found to become less well organized as L≥2λ. Finite element method simulations, combined with experimental observations, indicate that nanoparticles are initially distributed in response to the electric field along the clean Ag nanowire arising from optical excitation. This electric field is responsible for the attraction of nanoparticles to certain locations on the nanowire. We show how a fs-laser-driven assembly of nanoparticles on nanowires can be used in the development of a nanoscale optical logic processor. This method of creating periodic arrays of metallic nanoparticles on nanowire substrates then has many possible applications in electro-optics.
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10
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Baruah B, Gabriel GJ, Akbashev MJ, Booher ME. Facile synthesis of silver nanoparticles stabilized by cationic polynorbornenes and their catalytic activity in 4-nitrophenol reduction. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:4225-34. [PMID: 23461821 DOI: 10.1021/la305068p] [Citation(s) in RCA: 223] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
We report the facile one-pot single-phase syntheses of silver nanoparticles stabilized by norbornene type cationic polymers. Silver nanoparticles (AgNPs) stabilized by polyguanidino oxanorbornenes (PG) at 5 and 25 kDa and polyamino oxanorbornenes (PA) at 3 and 15 kDa have been synthesized by the reduction of silver ions with NaBH4 in aqueous solutions at ambient temperature. The four different silver nanoparticles have been characterized by UV-vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), dynamic light scattering (DLS), and transmission electron microscopy (TEM) for their particle size distributions. Interestingly, PG stabilizes the silver nanoparticles better than PA as evident from our spectroscopic data. Furthermore, the AgNP-PG-5K (5K = 5 kDa) was found to serve as an effective catalyst for the reduction of 4-nitrophenol to 4-aminophenol in the presence of NaBH4. The reduction has a pseudo-first-order rate constant of 5.50 × 10(-3) s(-1) and an activity parameter of 1375 s(-1) g(-1), which is significantly higher than other systems reported in the literature.
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Affiliation(s)
- Bharat Baruah
- Department of Chemistry and Biochemistry, Kennesaw State University, Kennesaw, Georgia 30144-5591, United States.
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11
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Abbasi AR, Kalantary H, Yousefi M, Ramazani A, Morsali A. Synthesis and characterization of Ag nanoparticles@Polyethylene fibers under ultrasound irradiation. ULTRASONICS SONOCHEMISTRY 2012; 19:853-857. [PMID: 22226203 DOI: 10.1016/j.ultsonch.2011.11.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2011] [Revised: 09/29/2011] [Accepted: 11/14/2011] [Indexed: 05/31/2023]
Abstract
The polyethylene fibers containing Ag nanoparticles were prepared through the chemical reduction under ultrasound irradiation. The effect of reducing reagent, power of ultrasound irradiation, reaction time and temperature in growth of the nanometric Ag were studied. Particle sizes and morphology of nanoparticle are depending on power of ultrasound irradiation. Results show a decrease in the particles size as increasing power of ultrasound irradiation. Also, an increase in temperature led to increase of particle size. The polyethylene fibers containing Ag nanoparticles were characterized with powder X-ray diffraction (XRD) and scanning electron microscopy (SEM).
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Affiliation(s)
- Amir Reza Abbasi
- Department of Chemistry, Faculty of Sciences, Tarbiat Modares University, P.O. Box 14155-4838 Tehran, Islamic Republic of Iran
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12
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Li J, Liao Y, Suslov S, Cheng GJ. Laser shock-based platform for controllable forming of nanowires. NANO LETTERS 2012; 12:3224-3230. [PMID: 22594665 DOI: 10.1021/nl3012209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
One-dimensional nanomaterials have attracted a great deal of research interest in the past few decades due to their unique mechanical, electrical, and optical properties. Changing the shape of nanowires (NWs) is both challenging and crucial to change the property and open wide functions of NWs, such as strain engineering, electronic transport, mechanical properties, band structure, and quantum properties, etc. Here we report a scalable strategy to conduct cutting, bending, and periodic straining of NWs by making use of laser shock pressure. Three-dimensional shaping of silver NWs is demonstrated, during which the Ag NWs exhibit very good ductility (strain-to-failure reaches 110%). Meanwhile, the high electrical conductivity of Ag NWs could retain well under controlled laser shock pressure. The microstructure observation indicates that the main deformation mechanism in Ag NWs under dynamic loading is formation of twinning and stacking fault, while dislocation motion and pile-up is less obvious. This method could be applied to semiconductor NWs as well.
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Affiliation(s)
- Ji Li
- Birck Nanotechnology Center and School of Industrial Engineering, Purdue University, West Lafayette, Indiana 47906, United States
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13
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Gong X, Bao Y, Qiu C, Jiang C. Individual nanostructured materials: fabrication and surface-enhanced Raman scattering. Chem Commun (Camb) 2012; 48:7003-18. [PMID: 22683862 DOI: 10.1039/c2cc31603j] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The progress of surface-enhanced Raman scattering (SERS) microscopy and spectroscopy on individual nanostructured materials has been reviewed in this feature article. After a brief introduction on individual nanomaterial SERS, we provide a systematic overview on the fabrication and SERS studies of individual nanoparticulates, nano-junctions and hierarchical nano-aggregate. These SERS-active nanomaterials have great potential in designing novel highly sensitive SERS substrates for the development of SERS-based sensing devices with a broad range of applications.
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Affiliation(s)
- Xiao Gong
- Department of Chemistry, University of South Dakota, Vermillion, South Dakota 57069, USA
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14
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Netzer NL, Qiu C, Zhang Y, Lin C, Zhang L, Fong H, Jiang C. Gold-silver bimetallic porous nanowires for surface-enhanced Raman scattering. Chem Commun (Camb) 2011; 47:9606-8. [PMID: 21796309 DOI: 10.1039/c1cc13641k] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highly porous bimetallic nanowires manufactured via a simple galvanic reaction have demonstrated superior activity in surface-enhanced Raman scattering, allowing ultrasensitive chemical detections on isolated porous nanowires in comparison to pristine silver nanowires.
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Affiliation(s)
- Nathan L Netzer
- Department of Chemistry, University of South Dakota, Vermillion, SD, USA
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15
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Stewart MS, Qiu C, Kattumenu R, Singamaneni S, Jiang C. Diameter-dependent coloration of silver nanowires. NANOTECHNOLOGY 2011; 22:275712. [PMID: 21606566 DOI: 10.1088/0957-4484/22/27/275712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Silver nanowires were synthesized with a green method and characterized with microscopic and diffractometric methods. The correlation between the colors of the nanowires deposited on a solid substrate and their diameters was explored. Silver nanowires that appear similar in color in the optical micrographs have very similar diameters as determined by atomic force microscopy. We have summarized the diameter-dependent coloration for these silver nanowires. An optical interference model was applied to explain such correlation. In addition, microreflectance spectra were obtained from individual nanowires and the observed spectra can be explained with the optical interference theory. This work provides a cheap, quick and simple screening method for studying the diameter distribution of silver nanowires, as well as the diameter variations of individual silver nanowires, without complicated sample preparation.
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Affiliation(s)
- Mindy S Stewart
- Department of Chemistry, University of South Dakota, 414 East Clark Street, Vermillion, SD 57069, USA
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16
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Lin H, Ohta T, Paul A, Hutchison JA, Demid K, Lebedev O, Van Tendeloo G, Hofkens J, Uji-i H. Light-assisted nucleation of silver nanowires during polyol synthesis. J Photochem Photobiol A Chem 2011. [DOI: 10.1016/j.jphotochem.2011.04.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Li X, Wang L, Yan G. Review: Recent research progress on preparation of silver nanowires by soft solution method and their applications. CRYSTAL RESEARCH AND TECHNOLOGY 2011. [DOI: 10.1002/crat.201100023] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Luu QN, Doorn JM, Berry MT, Jiang C, Lin C, May PS. Preparation and optical properties of silver nanowires and silver-nanowire thin films. J Colloid Interface Sci 2011; 356:151-8. [DOI: 10.1016/j.jcis.2010.12.077] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Revised: 12/22/2010] [Accepted: 12/23/2010] [Indexed: 11/27/2022]
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20
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Singamaneni S, McConney ME, Tsukruk VV. Swelling-induced folding in confined nanoscale responsive polymer gels. ACS NANO 2010; 4:2327-2337. [PMID: 20232813 DOI: 10.1021/nn901886y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Mechanical instabilities such as buckling, wrinkling, creasing, and folding are commonplace in both natural and synthetic systems over a wide range of length scales. In this study, we focus on the spontaneous folding behavior of the highly swellable confined nanoscale (thickness below 100 nm) gel films resulting in the formation of a network of regularly folded structures spontaneously emerging in the course of their swelling and drying. We suggest that regular self-folding is originated from periodic instabilities (wrinkles) caused by swelling-initiated stresses under confined conditions. Furthermore, folded gel structures can be organized into regular serpentine-like manner by imposing various boundary conditions on microimprinted surfaces. We suggest that this demonstration of uniform gel to mechanically mediate morphogenesis has far-reaching implications in the creation of complex, large-area, 3D gel nanostructures.
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Affiliation(s)
- Srikanth Singamaneni
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA
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