Results 41 to 50 of about 589,919 (368)

Morphology and surface chemistry engineering toward pH-universal catalysts for hydrogen evolution at high current density

Nature Communications, 2019
Hydrogen production from water provides one avenue toward harnessing renewable energy, although large-scale implementation remains a challenge. Here, authors explore roles of morphology and surface chemistry, and develop efficient catalysts for hydrogen ...
Yuting Luo, Lei Tang, Usman Khan, Qiangmin Yu, Hui-Ming Cheng, Xiaolong Zou, Bilu Liu   +6 more
doaj   +1 more source

Control and characterization of individual grains and grain boundaries in graphene grown by chemical vapour deposition

, 2011
The strong interest in graphene has motivated the scalable production of high-quality graphene and graphene devices. As the large-scale graphene films synthesized so far are typically polycrystalline, it is important to characterize and control grain ...
Pei, Shin-Shem, Yong P. Chen, Peng, Peng, Deepak Pandey, Zhihua Su, Jifa Tian, Chung, Ting Fung, Liu, Zhihong, Jiming Bao, Luis A. Jauregui, Pandey, Deepak, Nathan P. Guisinger, Cao, Helin, Chen, Yong P., Qingkai Yu, Guisinger, Nathan P., Helin Cao, Dongguang Wei, Wu, Wei, Bao, Jiming, Yu, Qingkai, Ting Fung Chung, Peng Peng, Wei, Dongguang, Tian, Jifa, Wei Wu, Eric A. Stach, Colby, Robert, Shin-Shem Pei, Jauregui, Luis A., Robert Colby, Su, Zhihua, Stach, Eric A., Zhihong Liu   +33 more
core   +1 more source

Electronic transport through ordered and disordered graphene grain boundaries [PDF]

, 2013
The evolution of electronic wave packets (WPs) through grain boundaries (GBs) of various structures in graphene was investigated by the numerical solution of the time-dependent Schrödinger equation. WPs were injected from a simulated STM tip placed above
Kim, Yong-Sung, Vancsó, P., Márk, Géza István, Biró, László P., Lambin, P., Kim, Y.-S., Vancsó, Péter, Biró, L.P., Hwang, C., Lambin, Philippe, Márk, G.I., Hwang, Chanyong, Mayer, A.   +12 more
core   +1 more source

Random-Gap Model for Graphene and Graphene Bilayers [PDF]

Physical Review Letters, 2009
5 pages, 1 ...
openaire   +4 more sources

Carboxylic‐Acid Functionalized Multiwalled Carbon Nanotube‐Alkane‐Based Resistive Temperature Sensor for Cold Chain Applications

Advanced Engineering Materials, EarlyView.
This study presents a reversible temperature sensor with high switching ratio, ∼103. The device is fabricated using PET‐ITO and carbon nanotube dispersions in alkane. Considering its application in cold chain logistics, a proof‐of‐concept with LED is showcased. Thus, a temperature drop below the threshold temperature (crystallization temperature of the
Sunil Kumar Behera, Philippe Marrec, A. Jorge Parola, Madalena Dionísio, Hugo Águas, Andreia F. M. Santos, Hamed Pourkheirollah, Donald Lupo, César A. T. Laia   +8 more
wiley   +1 more source

Multifunctionality and control of the crumpling and unfolding of large-area graphene [PDF]

, 2012
Crumpled graphene films are widely used, for instance in electronics energy storage, composites and biomedicine. Although it is known that the degree of crumpling affects graphene’s properties and the performance of graphene-based devices and materials ...
Pugno, Nicola M., Qiming Wang, Buehler, MJ, Markus J. Buehler, J. Zang, Ryu, Seunghwa, Tu, Q, Nicola Pugno, Pugno, N, Zang, Jianfeng, X. Zhao, Zhao, Xuanhe, Xuanhe Zhao, Zhao, X, Wang, Q, Tu, Qing, Seunghwa Ryu, Zang, J, Q. Wang, Wang, Qiming, Q. Tu, M. Buehler, Buehler, Markus J, Buehler, Markus J., Qing Tu, S. Ryu, Zhang, Jianfeng, Jianfeng Zang, Ryu, S, Pugno, Nicola   +29 more
core   +1 more source

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

Advanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham, Chenyu Wen, Mohammad Hadi Khaksaran, Won‐Yong Lee, Javier Cruz, Klas Hjort, Dongping Wu, Shi‐Li Zhang   +7 more
wiley   +1 more source

Preparation and characterization of in situ polymerized cyclic butylene terephthalate/graphene nanocomposites [PDF]

, 2012
Graphene reinforced cyclic butylene terephthalate (CBT) matrix nanocomposites were prepared and characterized by mechanical and thermal methods. These nanocomposites containing different amounts of graphene (up to 5 wt%) were prepared by melt mixing with
Hajba, Sándor, Karger-Kocsis, József, Czigány, Tibor, Balogh, Gábor   +3 more
core   +1 more source

A Compact Spin‐Coated Graphene UWB Antenna for Breast Tumor Detection

Advanced Engineering Materials, EarlyView.
A compact, spin‐coated graphene ultra‐wideband patch antenna designed for breast tumor detection, capable of distinguishing between malignant and benign tumors. This innovative antenna can serve as an effective initial screening tool, particularly in resource‐limited settings such as rural areas, where access to advanced medical equipment like MRI and ...
Raja Rashidul Hasan, Shuvra Saha, Sumit Hassan Eshan, Rinku Basak, Md. Nahian Al Subri Ivan, Ahmed Murtuza Saleque, Raja Tariqul Hasan Tusher, Sadia Zabin, Md. Abdur Rahman, Yuen Hong Tsang   +9 more
wiley   +1 more source

High-throughput production of cheap mineral-based two-dimensional electrocatalysts for high-current-density hydrogen evolution

Nature Communications, 2020
The large-scale implementation of electrochemical technologies will require the high-throughput production of high-performance, inexpensive catalysts.
Chi Zhang, Yuting Luo, Junyang Tan, Qiangmin Yu, Fengning Yang, Zhiyuan Zhang, Liusi Yang, Hui-Ming Cheng, Bilu Liu   +8 more
doaj   +1 more source