Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Kunttal Keyshar"'
Autor:
Sehmus Ozden, Rahul Mital, Thierry Tsafack, Robert Vajtai, Chandra Sekhar Tiwary, S. A. Syed Asif, Janet B. Hurst, Pulickel M. Ajayan, Anieph X. Gentles, Amelia H. C. Hart, Peter Samora Owuor, John Hamel, Kunttal Keyshar, Sanjit Bhowmik
Publikováno v:
Carbon. 164:143-149
Silicon carbide nanotube/nanowires (SiCNT/NWs) exhibit excellent mechanical properties in extreme thermal and oxidative environments. Here, we demonstrate an easily scalable process to synthesize millimeter-sized three-dimensional architectures using
Autor:
Gautam Gupta, Jing Zhang, Wu Zhou, Jingjie Wu, Jun Lou, Kunttal Keyshar, Pulickel M. Ajayan, Jiangtan Yuan, Weibing Chen, Xiaolong Zou, Ken Hackenberg, Aditya D. Mohite
Publikováno v:
Materials Today. 25:28-34
The emerging non-noble metal two-dimensional (2D) catalyst, such as MoS2, for the hydrogen evolution reaction (HER) is known to have an inert basal plane unless being converted to a metastable metallic phase or defect engineered. In order to take adv
Autor:
Thomas E. Beechem, Pulickel M. Ajayan, Xiang Zhang, Kunttal Keyshar, Gautam Gupta, Morgann Berg, Calvin K. Chan, Taisuke Ohta, Robert Vajtai, Aditya D. Mohite
Publikováno v:
ACS Nano. 11:8223-8230
The values of the ionization energies of transition metal dichalcogenides (TMDs) are needed to assess their potential usefulness in semiconductor heterojunctions for high-performance optoelectronics. Here, we report on the systematic determination of
Autor:
Kunttal Keyshar, Ken Hackenberg, Robert Vajtai, Alin Christian Chipara, K. R. Krishnadas, Anirban Som, Mohamad A. Kabbani, Sehmus Ozden, Chandra Sekhar Tiwary, Douglas S. Galvao, Pedro A. S. Autreto, Pulickel M. Ajayan, Thalappil Pradeep, Ahmad T. Kabbani
Publikováno v:
Carbon. 104:196-202
Here, we report similar reactions between nanotubes carrying functionalities, namely carbon nanotubes (CNTs) with the acyl chloride/hydroxyl and amine/carboxylic functionalities directly attached to their surfaces, resulting in the formation ofchemic
Autor:
Gang Shi, Pei Dong, Yingchao Yang, Sina Najmaei, Liehui Ge, Yung Joon Jung, Xiang Zhang, Sanghyun Hong, Ji Hao, Lulu Ma, Pulickel M. Ajayan, Xin Wang, Bo Li, Antony George, Yongji Gong, Jing Zhang, Robert Vajtai, Sidong Lei, Kunttal Keyshar, Yongmin He, Jun Lou
Publikováno v:
Nano Letters. 15:5089-5097
Large-scale suspended architectures of various two-dimensional (2D) materials (MoS2, MoSe2, WS2, and graphene) are demonstrated on nanoscale patterned substrates with different physical and chemical surface properties, such as flexible polymer substr
Autor:
Chandra Sekhar Tiwary, Bo Li, Yongji Gong, Douglas S. Galvao, Antony George, Amelia H. C. Hart, Kunttal Keyshar, Robert Vajtai, Gustavo Brunetto, Gonglan Ye, Pulickel M. Ajayan, Yongmin He, Ken Hackenberg, Daniel P. Cole, Leonardo D. Machado, Mohamad Kabbani, Wu Zhou
Publikováno v:
Advanced Materials. 27:4640-4648
The direct synthesis of monolayer and multilayer ReS2 by chemical vapor deposition at a low temperature of 450 °C is reported. Detailed characterization of this material is performed using various spectroscopy and microscopy methods. Furthermore ini
Autor:
Esam A. M. Husain, Kunttal Keyshar, Gustavo Brunetto, Yongji Gong, Gonglan Ye, Pulickel M. Ajayan, Robert Vajtai, Shubin Yang
Publikováno v:
Particle & Particle Systems Characterization. 32:817-821
Self-optimizing, highly surface-active layered metal dichalcogenide catalysts for hydrogen evolution
Autor:
Y. Morris Wang, Yingchao Yang, Jingjie Wu, Ken Hackenberg, Brandon C. Wood, Robert Vajtai, Pulickel M. Ajayan, Yuanyue Liu, Jing Zhang, Jing Gu, Kunttal Keyshar, Tadashi Ogitsu, Jun Lou, Boris I. Yakobson
Publikováno v:
Nature Energy, vol 2, iss 9
Low-cost, layered transition-metal dichalcogenides (MX_2) based on molybdenum and tungsten have attracted substantial interest as alternative catalysts for the hydrogen evolution reaction (HER). These materials have high intrinsic per-site HER activi
Autor:
Kunttal, Keyshar, Morgann, Berg, Xiang, Zhang, Robert, Vajtai, Gautam, Gupta, Calvin K, Chan, Thomas E, Beechem, Pulickel M, Ajayan, Aditya D, Mohite, Taisuke, Ohta
Publikováno v:
ACS nano. 11(8)
The values of the ionization energies of transition metal dichalcogenides (TMDs) are needed to assess their potential usefulness in semiconductor heterojunctions for high-performance optoelectronics. Here, we report on the systematic determination of
Autor:
Thierry Tsafack, Ryota Koizumi, Kunttal Keyshar, Rahul Mital, Sanjit Bhowmick, Sehmus Ozden, Amelia H. C. Hart, Syed Asif Syed Amanulla, Yusuke Ito, Pulickel M. Ajayan, Chandra Sekhar Tiwary, Peter Samora Owuor, Robert Vajtai, Janet B. Hurst, John Hamel
Publikováno v:
ACS applied materialsinterfaces. 9(15)
The most recent and innovative silicon carbide (SiC) fiber ceramic matrix composites, used for lightweight high-heat engine parts in aerospace applications, are woven, layered, and then surrounded by a SiC ceramic matrix composite (CMC). To further i