Application-Driven Carbon Nanotube Functional Materials

ACS Nano ◽  
2021 ◽  
Author(s):  
Yizeng Wu ◽  
Xuewei Zhao ◽  
Yuanyuan Shang ◽  
Shulong Chang ◽  
Linxiu Dai ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Functional Materials

Utilization of Industrial Inkjet Technologies for the Deposition of Conductive Polymers, Functional Oxides and CNTs

2011 ◽  
Vol 1340 ◽  
Author(s):  
Wolfgang Voit ◽  
Ingo Reinhold ◽  
Werner Zapka ◽  
Lyubov Belova ◽  
K.V. Rao
Keyword(s):  
Carbon Nanotube ◽  
Line Width ◽  
Conductive Polymer ◽  
Functional Materials ◽  
Polystyrene Sulfonate ◽  
Functional Oxides ◽  
Single Pass ◽  
Deposition Processes ◽  
Novel Applications ◽  
Printing Processes

ABSTRACTPrinting of functional materials requires reliable deposition processes. This work describes the development of printing processes for selected functional materials utilizing industrial-type inkjet printheads. A well-controlled printing process with fluids containing the conductive polymer poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is presented, allowing linear printing speeds of up to 0.35 m/s in single-pass, and smallest line width of approximately 40 μm when printing 7 pL drop volumes. In addition reliable processes for producing ZnO-based films, which enable novel applications for electronic and UV-sensitive devices, and for printing of conductive carbon nanotube layers are shown.

Identification and preparation of stable water dispersions of protein - Carbon nanotube hybrids and efficient design of new functional materials

Carbon ◽  
2019 ◽  
Vol 147 ◽  
pp. 70-82 ◽  
Author(s):  
Matteo Di Giosia ◽  
Francesco Valle ◽  
Andrea Cantelli ◽  
Andrea Bottoni ◽  
Francesco Zerbetto ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Functional Materials ◽  
Efficient Design

Bioinspired Graphene Nanogut

2013 ◽  
Vol 80 (6) ◽  
Author(s):  
Zhao Qin ◽  
Markus J. Buehler
Keyword(s):  
Carbon Nanotubes ◽  
Drug Delivery ◽  
Carbon Nanotube ◽  
Biological System ◽  
Scaling Laws ◽  
Functional Materials ◽  
Cross Sectional ◽  
Mismatch Strain ◽  
Damage Repair ◽  
Low Dimensional

Low-dimensional nanomaterials are attractive for various applications, including damage repair, drug delivery, and bioimaging. The ability to control the morphology of nanomaterials is critical for manufacturing as well as for utilizing them as functional materials or devices. However, the manipulation of such materials remains challenging, and effective methods to control their morphology remain limited. Here, we propose to mimic a macroscopic biological system—the gut—as a means to control the nanoscale morphology by exploiting the concept of mismatch strain. We show that, by mimicking the development of the gut, one can obtain a controlled wavy shape of a combined carbon nanotube and graphene system. We show that the scaling laws that control the formation of the gut at the macroscale are suitable for ultrasmall-diameter carbon nanotubes with a diameter smaller than 7 Å but do not account for the morphology of systems with larger diameter nanotubes. We find that the deviation is caused by cross-sectional buckling of carbon nanotube, where this behavior relates to the different constitutive laws for carbon nanotube and graphene in contrast to the macroscale biological system. Our study illustrates the possibility of downscaling macroscale phenomena to the nanoscale using continuum mechanics theory, with wide-ranging applications in nanotechnology.

scholarly journals Multifunctional Conductive Paths Obtained by Laser Processing of Non-Conductive Carbon Nanotube/Polypropylene Composites

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 604
Author(s):  
Federico Cesano ◽  
Mohammed Jasim Uddin ◽  
Alessandro Damin ◽  
Domenica Scarano
Keyword(s):  
Carbon Nanotube ◽  
Low Cost ◽  
Functional Materials ◽  
Self Healing ◽  
Next Generation ◽  
Polypropylene Composites ◽  
Electrical Percolation ◽  
Atomic Force ◽  
Wearable Systems ◽  
Investigation Methods

Functional materials are promising candidates for application in structural health monitoring/self-healing composites, wearable systems (smart textiles), robotics, and next-generation electronics. Any improvement in these topics would be of great relevance to industry, environment, and global needs for energy sustainability. Taking into consideration all these aspects, low-cost fabrication of electrical functionalities on the outer surface of carbon-nanotube/polypropylene composites is presented in this paper. Electrical-responsive regions and conductive tracks, made of an accumulation layer of carbon nanotubes without the use of metals, have been obtained by the laser irradiation process, leading to confined polymer melting/vaporization with consequent local increase of the nanotube concentration over the electrical percolation threshold. Interestingly, by combining different investigation methods, including thermogravimetric analyses (TGA), X-ray diffraction (XRD) measurements, scanning electron and atomic force microscopies (SEM, AFM), and Raman spectroscopy, the electrical properties of multi-walled carbon nanotube/polypropylene (MWCNT/PP) composites have been elucidated to unfold their potentials under static and dynamic conditions. More interestingly, prototypes made of simple components and electronic circuits (resistor, touch-sensitive devices), where conventional components have been substituted by the carbon nanotube networks, are shown. The results contribute to enabling the direct integration of carbon conductive paths in conventional electronics and next-generation platforms for low-power electronics, sensors, and devices.

Carbon Nanotube-Based Functional Materials for Optical Limiting

2007 ◽  
Vol 7 (4) ◽  
pp. 1268-1283 ◽  
Author(s):  
Yu Chen ◽  
Ying Lin ◽  
Ying Liu ◽  
James Doyle ◽  
Nan He ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Functional Materials ◽  
Optical Limiting

Development of Paper Transistor Using Carbon-Nanotube-Composite Paper

2012 ◽  
Vol 80 ◽  
pp. 59-64 ◽  
Author(s):  
Yusuke Kawamura ◽  
Shunsuke Hayashi ◽  
Yuya Shinde ◽  
Takahide Oya
Keyword(s):  
Carbon Nanotube ◽  
Metal Layer ◽  
Functional Materials ◽  
Gate Insulator ◽  
Insulator Layer ◽  
Research Attention ◽  
Physical Strength ◽  
Source Current ◽  
Carbon Nanotube Composite ◽  
Composite Paper

We have developed a unique “paper transistor” comprised of carbon nanotube (CNT) composite papers. CNTs have recently attracted much research attention in the nanotechnology field due to their many excellent physical properties, including good electrical and heat conductivities, physical strength, and dual semiconducting- and metallic- characteristics. CNTs have great potential for use as many different functional materials. In a previous work, we developed a CNT-composite paper as a new functional material. A normal paper is flexible and can be fabricated and used easily, and we can easily fabricate the CNT-composite paper by mixing pulp with CNTs. The resulting CNT-composite paper has both CNT and normal paper characteristics. In this study, we focused primarily on the dual semiconducting- and metallic- characteristics exhibited by CNTs because we can create paper composites that are both semiconducting and metallic. Our main goal was to develop a field-effect-transistor (FET) using semiconducting- and metallic- CNT-composite papers. A conventional FET has metal, insulator, and semiconductor layers. Our FET also has three layers: the metallic CNT-composite paper is used for gate, source, and drain electrodes as the metal layer; the semiconducting CNT-composite paper is used for a semiconductor as the channel layer; and the normal paper is used as a gate insulator layer. The key point here is that we were able to design and develop an FET using only normal paper and two kinds of CNT-composite paper, without any silicon or semiconductors. After the construction, we measured the electrical conductivity of our FET to test its operation. A drain-to-source current of about 10μA was observed. Moreover, we could control the current flow by controlling the gate voltage. These results demonstrate that it is possible to fabricate a paper FET using only normal paper and two kinds of CNT-composite paper.

scholarly journals Fabrication of Metal/Carbon Nanotube Composites by Electro Chemical Deposition

Electrochem ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 563-589
Author(s):  
Susumu Arai
Keyword(s):  
Carbon Nanotube ◽  
Electrochemical Deposition ◽  
High Performance ◽  
Electroless Deposition ◽  
Chemical Deposition ◽  
Functional Materials ◽  
Metal Coating ◽  
Homogeneous Distribution ◽  
Preparation Methods ◽  
Composite Plating

Metal/carbon nanotube (CNT) composites are promising functional materials due to the various superior properties of CNTs in addition to the characteristics of metals, and consequently, many fabrication processes of these composites have been vigorously researched. In this paper, the fabrication process of metal/CNT composites by electrochemical deposition, including electrodeposition and electroless deposition, are comprehensively reviewed. A general introduction for fabrication of metal/CNT composites using the electrochemical deposition is carried out. The fabrication methods can be classified into three types: (1) composite plating by electrodeposition or electroless deposition, (2) metal coating on CNT by electroless deposition, and (3) electrodeposition using CNT templates, such as CNT sheets and CNT yarns. The performances of each type have been compared and explained especially from the view point of preparation methods. In the cases of (1) composite plating and (2) metal coating on CNTs, homogeneous dispersion of CNTs in electrochemical deposition baths is essential for the formation of metal/CNT composites with homogeneous distribution of CNTs, which leads to high performance composites. In the case of (3) electrodeposition using CNT templates, the electrodeposition of metals not only on the surfaces but also interior of the CNT templates is the key process to fabricate high performance metal/CNT composites.

High Resolution Electron Microscopy of internal interfaces in layered materials

1990 ◽  
Vol 48 (4) ◽  
pp. 320-321
Author(s):  
Yoichi Ishida ◽  
Hideki Ichinose ◽  
Yutaka Takahashi ◽  
Jin-yeh Wang
Keyword(s):  
Grain Boundaries ◽  
Mirror Symmetry ◽  
Functional Materials ◽  
High Resolution Electron Microscopy ◽  
Layered Materials ◽  
Plane Boundary ◽  
Chemical Information ◽  
Layer Plane ◽  
High Tc ◽  
Cubic Metals

Layered materials draw attention in recent years in response to the world-wide drive to discover new functional materials. High-Tc superconducting oxide is one example. Internal interfaces in such layered materials differ significantly from those of cubic metals. They are often parallel to the layer of the neighboring crystals in sintered samples(layer plane boundary), while periodically ordered interfaces with the two neighboring crystals in mirror symmetry to each other are relatively rare. Consequently, the atomistic features of the interface differ significantly from those of cubic metals. In this paper grain boundaries in sintered high-Tc superconducting oxides, joined interfaces between engineering ceramics with metals, and polytype interfaces in vapor-deposited bicrystal are examined to collect atomic information of the interfaces in layered materials. The analysis proved that they are not neccessarily more complicated than that of simple grain boundaries in cubic metals. The interfaces are majorly layer plane type which is parallel to the compound layer. Secondly, chemical information is often available, which helps the interpretation of the interface atomic structure.

Pyridyl disulfide-based thiol–disulfide exchange reaction: shaping the design of redox-responsive polymeric materials

2020 ◽  
Vol 11 (48) ◽  
pp. 7603-7624
Author(s):  
Ismail Altinbasak ◽  
Mehmet Arslan ◽  
Rana Sanyal ◽  
Amitav Sanyal
Keyword(s):  
Exchange Reaction ◽  
Functional Materials ◽  
Polymeric Materials ◽  
Disulfide Exchange ◽  
Redox Responsive ◽  
Synthetic Approaches

This review provides an overview of synthetic approaches utilized to incorporate the thiol-reactive pyridyl-disulfide motif into various polymeric materials, and briefly highlights its utilization to obtain functional materials.

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