101
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Wei J, Wang G, Chen F, Bai M, Liang Y, Wang H, Zhao D, Zhao Y. Sol-Gel Synthesis of Metal-Phenolic Coordination Spheres and Their Derived Carbon Composites. Angew Chem Int Ed Engl 2018; 57:9838-9843. [DOI: 10.1002/anie.201805781] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 06/19/2018] [Indexed: 01/02/2023]
Affiliation(s)
- Jing Wei
- School of Life Science and Technology; The Key Laboratory of Biomedical Information Engineering of Ministry of Education; Xi'an Jiaotong University; Xi'an Shaanxi 710049 P. R. China
| | - Gen Wang
- School of Life Science and Technology; The Key Laboratory of Biomedical Information Engineering of Ministry of Education; Xi'an Jiaotong University; Xi'an Shaanxi 710049 P. R. China
| | - Feng Chen
- School of Life Science and Technology; The Key Laboratory of Biomedical Information Engineering of Ministry of Education; Xi'an Jiaotong University; Xi'an Shaanxi 710049 P. R. China
| | - Min Bai
- School of Life Science and Technology; The Key Laboratory of Biomedical Information Engineering of Ministry of Education; Xi'an Jiaotong University; Xi'an Shaanxi 710049 P. R. China
| | - Yan Liang
- Department of Chemical Engineering; Monash University; Clayton Victoria 3800 Australia
| | - Huanting Wang
- Department of Chemical Engineering; Monash University; Clayton Victoria 3800 Australia
| | - Dongyuan Zhao
- Department of Chemistry; State Key Laboratory of Molecular Engineering of Polymers, Shanghai Key Lab of Molecular Catalysis and Innovative Materials, i ChEM; Fudan University; Shanghai 200433 P. R. China
| | - Yongxi Zhao
- School of Life Science and Technology; The Key Laboratory of Biomedical Information Engineering of Ministry of Education; Xi'an Jiaotong University; Xi'an Shaanxi 710049 P. R. China
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102
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Shen Q, Luo Z, Ma S, Tao P, Song C, Wu J, Shang W, Deng T. Bioinspired Infrared Sensing Materials and Systems. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1707632. [PMID: 29750376 DOI: 10.1002/adma.201707632] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 02/08/2018] [Indexed: 05/26/2023]
Abstract
Bioinspired engineering offers a promising alternative approach in accelerating the development of many man-made systems. Next-generation infrared (IR) sensing systems can also benefit from such nature-inspired approach. The inherent compact and uncooled operation of biological IR sensing systems provides ample inspiration for the engineering of portable and high-performance artificial IR sensing systems. This review overviews the current understanding of the biological IR sensing systems, most of which are thermal-based IR sensors that rely on either bolometer-like or photomechanic sensing mechanism. The existing efforts inspired by the biological IR sensing systems and possible future bioinspired approaches in the development of new IR sensing systems are also discussed in the review. Besides these biological IR sensing systems, other biological systems that do not have IR sensing capabilities but can help advance the development of engineered IR sensing systems are also discussed, and the related engineering efforts are overviewed as well. Further efforts in understanding the biological IR sensing systems, the learning from the integration of multifunction in biological systems, and the reduction of barriers to maximize the multidiscipline collaborations are needed to move this research field forward.
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Affiliation(s)
- Qingchen Shen
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Zhen Luo
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Shuai Ma
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Peng Tao
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Chengyi Song
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Jianbo Wu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Wen Shang
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Tao Deng
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
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103
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Suh A, Yoon DK. Nanoscratching technique for highly oriented liquid crystal materials. Sci Rep 2018; 8:9460. [PMID: 29930253 PMCID: PMC6013491 DOI: 10.1038/s41598-018-27887-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 06/11/2018] [Indexed: 11/22/2022] Open
Abstract
A simple, fast, and cost-effective technique to obtain highly oriented thermotropic and lyotropic liquid crystal (LC) phases using a simple nanoscratching method is presented. Highly aligned linear nanogrooves are fabricated by scratching substrates such as normal, indium tin oxide (ITO), curved glasses, and ITO-coated polyethylene terephthalate (PET) film using diamond lapping films. To demonstrate the feasibility of the platform, typical thermotropic and lyotropic LC materials in the nematic phase are used to demonstrate the well-aligned domains along with the resulting scratched nanogrooves. The polarised optical microscopy (POM) images show excellent dark and bright states depending on the sample rotation, proving that the LC molecules are well aligned. The electro-optical performance of the twisted nematic (TN) mode LC display fabricated using the nanogrooves is also measured and indicates reliable results compared with that of the conventional device. Indeed, scratch-induced nanogrooves are well generated on the curved substrate and ITO-coated PET film to show versatility of our technique. Our platform can suggest a new nanofabrication way to make various electro-optical devices as well as other patterning applications.
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Affiliation(s)
- Ahram Suh
- Graduate School of Nanoscience and Technology, KAIST, Daejeon, 34141, Republic of Korea
| | - Dong Ki Yoon
- Graduate School of Nanoscience and Technology, KAIST, Daejeon, 34141, Republic of Korea. .,Department of Chemistry and KINC, KAIST, Daejeon, 34141, Republic of Korea.
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104
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Zhong K, Li J, Liu L, Van Cleuvenbergen S, Song K, Clays K. Instantaneous, Simple, and Reversible Revealing of Invisible Patterns Encrypted in Robust Hollow Sphere Colloidal Photonic Crystals. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1707246. [PMID: 29726040 DOI: 10.1002/adma.201707246] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 03/08/2018] [Indexed: 05/23/2023]
Abstract
The colors of photonic crystals are based on their periodic crystalline structure. They show clear advantages over conventional chromophores for many applications, mainly due to their anti-photobleaching and responsiveness to stimuli. More specifically, combining colloidal photonic crystals and invisible patterns is important in steganography and watermarking for anticounterfeiting applications. Here a convenient way to imprint robust invisible patterns in colloidal crystals of hollow silica spheres is presented. While these patterns remain invisible under static environmental humidity, even up to near 100% relative humidity, they are unveiled immediately (≈100 ms) and fully reversibly by dynamic humid flow, e.g., human breath. They reveal themselves due to the extreme wettability of the patterned (etched) regions, as confirmed by contact angle measurements. The liquid surface tension threshold to induce wetting (revealing the imprinted invisible images) is evaluated by thermodynamic predictions and subsequently verified by exposure to various vapors with different surface tension. The color of the patterned regions is furthermore independently tuned by vapors with different refractive indices. Such a system can play a key role in applications such as anticounterfeiting, identification, and vapor sensing.
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Affiliation(s)
- Kuo Zhong
- Department of Chemistry KU Leuven, Celestijnenlaan 200D, Heverlee, B-3001, Leuven, Belgium
| | - Jiaqi Li
- IMEC, Kapeldreef 75, Heverlee, B-3001, Leuven, Belgium
| | - Liwang Liu
- Département d'Acoustique Physique UMR CNRS 5295, Université de Bordeaux, 351 cours de la libération, 33405, Talence, France
| | | | - Kai Song
- Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Koen Clays
- Department of Chemistry KU Leuven, Celestijnenlaan 200D, Heverlee, B-3001, Leuven, Belgium
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105
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Living Light 2018: Conference Report. Biomimetics (Basel) 2018; 3:biomimetics3020011. [PMID: 31105233 PMCID: PMC6352687 DOI: 10.3390/biomimetics3020011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 05/17/2018] [Accepted: 05/17/2018] [Indexed: 11/17/2022] Open
Abstract
Living Light is a biennial conference focused on all aspects of light–matter interaction in biological organisms with a broad, interdisciplinary outlook. The 2018 edition was held at the Møller Centre in Cambridge, UK, from April 11th to April 14th, 2018. Living Light’s main goal is to bring together researchers from different backgrounds (e.g., biologists, physicists and engineers) in order to discuss the current state of the field and sparkle new collaborations and new interdisciplinary projects. With over 90 national and international attendees, the 2018 edition of the conference was strongly multidisciplinary: oral and poster presentations encompassed a wide range of topics ranging from the evolution and development of structural colors in living organisms and their genetic manipulation to the study of fossil photonic structures.
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106
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Smirnov E, Peljo P, Girault HH. Gold Raspberry-Like Colloidosomes Prepared at the Water-Nitromethane Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:2758-2763. [PMID: 29376386 DOI: 10.1021/acs.langmuir.7b03532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In this study, we propose a simple shake-flask method to produce micron-size colloidosomes from a liquid-liquid interface functionalized with a gold nanoparticle (AuNP) film. A step-by-step extraction process of an organic phase partially miscible with water led to the formation of raspberry-like structures covered and protected by a gold nanofilm. The distinctive feature of the prepared colloidosomes is a very thin shell consisting of small AuNPs of 12 or 38 nm in diameter instead of several hundred nanometers reported previously. The interesting and remarkable property of the proposed approach is their reversibility: the colloidosomes may be easily transformed back to a nanofilm state simply by adding pure organic solvent. The obtained colloidosomes have a broadband absorbance spectrum, which makes them of great interest in applications such as photothermal therapy, surface-enhanced Raman spectroscopy studies, and microreactor vesicles for interfacial electrocatalysis.
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Affiliation(s)
- Evgeny Smirnov
- Laboratoire d'Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne , Rue de l'Industrie 17, CH-1951 Sion, Switzerland
| | - Pekka Peljo
- Laboratoire d'Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne , Rue de l'Industrie 17, CH-1951 Sion, Switzerland
| | - Hubert H Girault
- Laboratoire d'Electrochimie Physique et Analytique, Ecole Polytechnique Fédérale de Lausanne , Rue de l'Industrie 17, CH-1951 Sion, Switzerland
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107
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Takeoka Y. Environment and human friendly colored materials prepared using black and white components. Chem Commun (Camb) 2018; 54:4905-4914. [DOI: 10.1039/c8cc01894d] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A review describing how to prepare structural colored materials with less angle dependency using white and black substances.
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Affiliation(s)
- Yukikazu Takeoka
- Department of Molecular & Macromolecular Chemistry
- Nagoya University
- Nagoya 464-8603
- Japan
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