Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Anastassios Mavrokefalos"'
Autor:
Alexandr I. Cocemasov, Denis L. Nika, Anastassios Mavrokefalos, Feng Zhu, Shivkant Singh, Vladimir M. Fomin, Oliver G. Schmidt, Guodong Li, Thomas Gemming, Milad Yarali, Stefan Baunack
Publikováno v:
ACS Nano. 11:8215-8222
Silicon, although widely used in modern electronic devices, has not yet been implemented in thermoelectric applications mainly due to its high thermal conductivity, κ, which leads to an extremely low thermoelectric energy conversion efficiency (figu
Autor:
Anastassios Mavrokefalos, Hatem Brahmi, Yung Joon Jung, Milad Yarali, Viktor G. Hadjiev, Shuo Chen, Mohammad Khodadadi, Ji Hao
Publikováno v:
RSC Advances. 7:14078-14087
The effect of physisorbed vs. chemisorbed oxygen on highly organized single walled carbon nanotube (SWCNT) ultrathin films is investigated by correlating the thermoelectric properties measured by a suspended micro-device to the SWCNT structure charac
Autor:
Anastassios Mavrokefalos, Shivkant Singh, Haiding Sun, Ronghui Lin, Shahab Shervin, Jae-Hyun Ryou, Jie Chen, Xiaohang Li, Milad Yarali, Kuang-Hui Li
Publikováno v:
ACS applied materialsinterfaces. 10(23)
The effect of controlling the c-axis alignment (mosaicity) to the cross-plane thermal transport in textured polycrystalline aluminum nitride (AlN) thin films is experimentally and theoretically investigated. We show that by controlling the sputtering
Autor:
Milad Yarali, Lixin Xie, Giwan Katwal, Shuo Chen, Ram Neupane, Oomman K. Varghese, Hatem Brahmi, Maggie Paulose, Anastassios Mavrokefalos, Shivkant Singh
Publikováno v:
Nanoscale. 10(8)
Manipulating the transport properties of titania nanotubes (NTs) is paramount in guaranteeing the material's successful implementation in various solid state applications. Here we present the unique semiconducting properties of individual titania NTs
Autor:
Lixin Xie, Mina Yoon, Anastassios Mavrokefalos, Hatem Brahmi, Zhequan Yan, Kai Xiao, Shuo Chen, Milad Yarali, Satish Kumar, Xufan Li
Publikováno v:
ACS applied materialsinterfaces. 10(5)
It is well understood that defect engineering can give rise to exotic electronic properties in transition-metal dichalcogenides, but to this date, there is no detailed study to illustrate how defects can be engineered to tailor their thermal properti
Autor:
Kathy Olenick, Shahab Shervin, Keon Hwa Lee, Dong Kyu Lee, Jae-Hyun Ryou, Joon Seop Kwak, John A. Olenick, Shivkant Singh, Venkat Venkateswaran, Anastassios Mavrokefalos, Seung Kyu Oh, Sung-Nam Lee, Seung-Hwan Kim, Mojtaba Asadirad
Publikováno v:
IEEE Electron Device Letters. 37:615-617
We demonstrate flip-chip light-emitting diodes (FC-LEDs) on a flexible yttria-stabilized zirconia (YSZ) substrate and compare them with FC-LEDs on a polymeric substrate. Degradation of luminescence intensity and red-shift of peak wavelength are not o
Autor:
Shivkant Singh, Anastassios Mavrokefalos, Monika Rathi, Sicong Sun, Yang Gao, Yan Yao, Venkat Selvamanickam, Pavel Dutta, Devendra Khatiwada
Publikováno v:
APL Materials, Vol 7, Iss 3, Pp 031104-031104-9 (2019)
With the advancement of nano-technology and push toward flexible electronics, the opportunity to generate electricity using solid-state devices has ushered tremendous research interest in improving the thermoelectric (TE) properties of flexible semic
Autor:
Maggie Paulose, Shuo Chen, Hatem Brahmi, Oomman K. Varghese, Mohammad Khodadadi, Anastassios Mavrokefalos, Giwan Katwal
Publikováno v:
Nanoscale. 7(45)
The thermal properties of nano-scale materials are largely influenced by their geometry. The zero, one and quasi one dimensional forms of the same material could exhibit unique thermal transport properties depending upon the shape and nano-scale feat
Autor:
Ngoc T. Nguyen, Anastassios Mavrokefalos, Catalin Chiritescu, Michael D. Anderson, Qiyin Lin, David W. Johnson, Li Shi, Paul Zschack, Polly A. Berseth, Ian M. Anderson, David G. Cahill
Publikováno v:
Chemistry of Materials. 22:2750-2756
Turbostratically disordered tungsten diselenide (WSe2) thin films with as few as two c-axis-oriented (basal plane) structural units were synthesized from modulated elemental reactants. By varying t...
Autor:
Anastassios Mavrokefalos, Nikhil Koratkar, Zhuan Zhu, Hatem Brahmi, Shuo Chen, Debjit Ghoshal, Xufei Wu, Lixin Xie, Jiming Bao, Milad Yarali, Tushar Gupta, Tengfei Luo
Publikováno v:
Advanced Functional Materials. 27:1704357
It is understood that defects of the atomic arrangement of the lattice in 2D molybdenum disulfide (MoS2) grown by chemical vapor deposition (CVD) can have a profound effect on the electronic and optical properties. Beyond these it is a major prerequi