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Lu L.,CAS Suzhou Institute of Nano Technology and Nano Bionics
Nanoscale | Year: 2011

Biopolymers are important natural multifunctional macromolecules for biomimetic and bio-inspired advanced functional material design. They are not only simple dispersants for carbon nanotube stabilization as they have been found to have specific interactions with carbon nanotubes. Their molecular activity, orientation and crystallization are influenced by the CNTs, which endow their composites with a variety of novel sensing and actuation performances. This review focuses on the progress in supramolecular self-assembly of biopolymers with carbon nanotubes, and their advances in sensing and actuation. To promote the development of advanced biopolymer/CNT functional materials, new electromechanical characteristics of biopolymer/CNT composites are discussed in detail based on the relationship between the microscopic biopolymer structures and the macroscopic composite properties. Source


Li M.,CAS Suzhou Institute of Nano Technology and Nano Bionics
Nanoscale | Year: 2010

Epoxy in electrospun nanofibers acting as adhesive generates junctions between nanofibers and thus forms stable three-dimensional networks. Source


Patent
CAS Suzhou Institute of Nano Technology and Nano Bionics | Date: 2015-12-01

Provided is a preparation method of near-infrared silver sulfide quantum dots. The silver sulfide quantum dots have hydrophilic groups derived from a mercapto-containing hydrophilic reagent attached on the surface thereof, and the hydrophilic reagent is any one of mercaptoacetic acid, mercaptopropionic acid, cysteine, cysteamine, thioctic acid and ammonium mercaptoacetate or any combination thereof. The silver sulfide quantum dots have high fluorescence yield, good fluorescence stability, good biocompatibility and uniform sizes. The preparation method has moderate reaction conditions, simple operation, short production cycle, good reproducibility and is easy to control. The silver sulfide quantum dots can be used in the application of cellular imaging and biological tissue imaging.


Kong L.,CAS Suzhou Institute of Nano Technology and Nano Bionics | Chen W.,CAS Suzhou Institute of Nano Technology and Nano Bionics
Advanced Materials | Year: 2014

Bio-inspired actuation materials, also called artificial muscles, have attracted great attention in recent decades for their potential application in intelligent robots, biomedical devices, and micro-electro-mechanical systems. Among them, ionic polymer metal composite (IPMC) actuator has been intensively studied for their impressive high-strain under low voltage stimulation and air-working capability. A typical IPMC actuator is composed of one ion-conductive electrolyte membrane laminated by two electron-conductive metal electrode membranes, which can bend back and forth due to the electrode expansion and contraction induced by ion motion under alternating applied voltage. As its actuation performance is mainly dominated by electrochemical and electromechanical process of the electrode layer, the electrode material and structure become to be more crucial to higher performance. The recent discovery of one dimensional carbon nanotube and two dimensional graphene has created a revolution in functional nanomaterials. Their unique structures render them intriguing electrical and mechanical properties, which makes them ideal flexible electrode materials for IPMC actuators in stead of conventional metal electrodes. Currently although the detailed effect caused by those carbon nanomaterial electrodes is not very clear, the presented outstanding actuation performance gives us tremendous motivation to meet the challenge in understanding the mechanism and thus developing more advanced actuator materials. Therefore, in this review IPMC actuators prepared with different kinds of carbon nanomaterials based electrodes or electrolytes are addressed. Key parameters which may generate important influence on actuation process are discussed in order to shed light on possible future research and application of the novel carbon nanomateials based bio-inspired electrochemical actuators. Carbon nanotubes and graphene have exceptional electrical, mechanical, and electromechanical properties, which makes them ideal candidates for advanced actuator materials. In this review, fundamental and recent developements of these carbon nanomaterials based IPMC electrochemical actuators are discussed in order to shed light on next-generation bio-inspired actuators with higher performance. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source


Li F.,CAS Suzhou Institute of Nano Technology and Nano Bionics | Wang Q.,CAS Suzhou Institute of Nano Technology and Nano Bionics
Small | Year: 2014

Biomolecular nanostructures in nature are drawing increasing interests in the field of materials sciences. As a typical group of them, virus-based nanoparticles (VNPs), which are nanocages or nanorods assembled from capsid proteins of viruses, have been widely exploited as templates to guide the fabrication of complex nanoarchitectures (NAs), because of their appropriate sizes (ca. 20-200 nm), homogeneity, addressable functionalization, facile modification via chemical and genetic routes, and convenient preparation. Foreign materials can be positioned in the inner cavity or on the outer surface of VNPs, through either direct synthesis or assembling preformed nanomaterials. Simultaneous use of the inner and outer space of VNPs facilitates integration of multiple functionalities in a single NA. This review briefly summarizes the strategies for fabrication of NAs templated by VNPs and wide applications of these NAs in fields of catalysis, energy, biomedicine, and nanophotonics, etc. As a typical group of biomacromolecules, virus-based nanoparticles (VNPs), which are nanocages or nanorods assembled from viral capsid proteins, have been widely exploited as templates for the fabrication of complex nanoarchitectures (NAs). Foreign materials can be positioned in the inner cavity or on the outer surface of VNPs. Simultaneous use of the inner and outer space of VNPs facilitates integration of multiple functionalities in a single NA. Strategies for VNP-templated fabrication of NAs and their applications are discussed in this review. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

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