نتایج جستجو برای: nanocarbon

تعداد نتایج: 471  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2009
K Eswar Prasad Barun Das Urmimala Maitra Upadrasta Ramamurty C N R Rao

One of the applications of nanomaterials is as reinforcements in composites, wherein small additions of nanomaterials lead to large enhancements in mechanical properties. There have been extensive studies in the literature on composites where a polymer matrix is reinforced by a single nanomaterial such as carbon nanotubes. In this article, we examine the significant synergistic effects observed...

2015

Motivated by the rapid development of portable electronics, electric vehicles (EVs), and renewable energy harvesting, advanced materials with exceptional electrical, thermal, chemical, and mechanical properties for energy storage devices featuring good flexibility, high power and energy densities, and low cost are highly sought after. With the rapid growth of nanotechnology (nanotech), two typi...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2008
J L Davidson W P Kang K Subramanian Y M Wong

Nanocarbon-derived electron emission devices, specifically nanodiamond lateral field emission (FE) diodes and gated carbon nanotube (CNT) triodes, are new configurations for robust nanoelectronic devices. These novel micro/nanostructures provide an alternative and efficient means of accomplishing electronics that are impervious to temperature and radiation. For example, nitrogen-incorporated na...

2017
Enbing Bi Han Chen Fengxian Xie Yongzhen Wu Wei Chen Yanjie Su Ashraful Islam Michael Grätzel Xudong Yang Liyuan Han

Long-term stability is crucial for the future application of perovskite solar cells, a promising low-cost photovoltaic technology that has rapidly advanced in the recent years. Here, we designed a nanostructured carbon layer to suppress the diffusion of ions/molecules within perovskite solar cells, an important degradation process in the device. Furthermore, this nanocarbon layer benefited the ...

2017
Chaozhong Guo Youcheng Wu Zhongbin Li Wenli Liao Lingtao Sun Chao Wang Bixia Wen Yanrong Li Changguo Chen

The design of noble-metal-free catalysts for oxygen reduction reaction (ORR) is very important to the commercialization of fuel cells. Here, we use a Co-modified montmorillonite (Co-MMT) as a flat template to prepare Co- and N-doped nanocarbon ORR catalysts derived from carbonization of polyaniline at controlled temperatures. The use of flat template can hinder the agglomeration of polyaniline ...

Journal: :Nanoscale 2016
Emi Kano Ayako Hashimoto Tomoaki Kaneko Nobuo Tajima Takahisa Ohno Masaki Takeguchi

Metal doping into the graphene lattice has been studied recently to develop novel nanoelectronic devices and to gain an understanding of the catalytic activities of metals in nanocarbon structures. Here we report the direct observation of interactions between Cu atoms and single-layer graphene by transmission electron microscopy. We document stable configurations of Cu atoms in the graphene she...

Journal: :Journal of the American Chemical Society 2010
Pradip Ghosh M Zamri Yusop Syunsaku Satoh Munisamy Subramanian Akari Hayashi Yasuhiko Hayashi Masaki Tanemura

The fabrication of conical nanocarbon structures (CNCSs) on a transparent and flexible nafion substrate at room temperature using an ion irradiation technique and their application toward field emission displays (FEDs) have been demonstrated. The main advantage of this technique is that CNCSs can be fabricated directly on the transparent substrate while retaining the transparency of the substra...

2017
Kailong Jiao Yu Jiang Zepeng Kang Ruiyun Peng Shuqiang Jiao Zongqian Hu

Three-dimensional nanoarchitectures of Co3O4@multi-walled carbon nanotubes (Co3O4@MWNTs) were synthesized via a one-step process with hydrothermal growth of Co3O4 nanoparticles onto MWNTs. The structure and morphology of the Co3O4@MWNTs were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller, scanning electron microscopy and transmission electron...

2013
Sangkil Kim Benjamin Cook Taoran Le James Cooper Hoseon Lee Vasileios Lakafosis Rushi Vyas Riccardo Moro Maurizio Bozzi Apostolos Georgiadis Ana Collado Manos M. Tentzeris

Inkjet-printing is a very promising technology for the development of microwave circuits and components. Inkjetprinting technology of conductive silver nanoparticles on an organic flexible paper substrate is introduced in this study. The paper substrate is characterised using the T-resonator method. A variety of microwave passive and active devices, as well as complete circuits inkjet-printed o...

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