Results 91 to 100 of about 69,476 (295)

Lightweight graphite/polyimide panels [PDF]

, 1973
Panels are constructed of honeycombed polyimide/graphite core covered with thin face sheet of same material. Fabrication is based on extension of thin-gage graphite technology and modification of glass filament polyimide honeycomb ...
Merlette, J. B., Poesch, J. G.
core   +1 more source

Theory of the Three Dimensional Quantum Hall Effect in Graphite

, 2007
We predict the existence of a three dimensional quantum Hall effect plateau in a graphite crystal subject to a magnetic field. The plateau has a Hall conductivity quantized at $\frac{4e^2}{\hbar} \frac{1}{c_0} $ with $c_0$ the c-axis lattice constant. We
B. Andrei Bernevig, B. I. Halperin, Daniel P. Arovas, Srinivas Raghu, Taylor L. Hughes, Y. Hishiyama   +5 more
core   +1 more source

Graphene Nanosheet‐Based Mixed Proton‐Electron Conducting Membranes for Efficient Hydrogen Purification

Advanced Functional Materials, EarlyView.
A monolayer graphene/phosphoric‐acid mixed proton‐electron conducting membrane combines proton‐conducting nanoconfined acid channels with electron‐conducting graphene nanosheets for efficient high‐temperature hydrogen purification. The membrane achieves nearly 100% H2/CO2 selectivity and 69 GPU hydrogen permeance at 250°C, arising from synergistic ...
Kaiqiang He, Fanmengjing Wang, Dehua Dong, Yuan Kang, Zhikao Li, Jacek J. Jasieniak, Paul A. Webley, Douglas R. MacFarlane, Huanting Wang   +8 more
wiley   +1 more source

X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites

Advanced Functional Materials, EarlyView.
We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim, Gayoung Seo, Seong Yeon Park, Juwon Jang, Yunho Ahn, Samiksha Mukesh Jain, Samrat Das Adhikari, Harumi Correa‐Leiva, Ignacio Utreras‐Asenjo, Oscar A. Douglas‐Gallardo, Carina Pareja‐Rivera, Kayoung Cho, Byeongsung Kim, Jhonatan Rodriguez‐Pereira, Eunseo Choi, JaeHong Park, Jin Ho Bang, Danilo H. Jara‐Quinteros, Sixto Giménez, Seog Joon Yoon, Andrés F. Gualdrón‐Reyes, Iván Mora‐Seró   +21 more
wiley   +1 more source

Endothermic Properties of Modified Expanded Graphite-based CaxZny(OH)2(x+y) Composite Materials for Heat Storage

Open Engineering, 2016
In this paper, the preparation and the test of the endothermic properties of modified expanded graphitebased CaxZny(OH)2(x+y) composite materials are reported, which is promised to be used for heat storage.
Zheng Maosheng, Lu Liting, Sun Shimin, Hu Jun, Teng Haipeng   +4 more
doaj   +1 more source

Radiation heating in selected NERVA engine components [PDF]

, 1972
The role of heating from nuclear radiation in design of the NERVA engine is treated. Some components are subjected to very high gamma heating rates in excess of 0.5 Btu/cubic inch/sec in steel in the primary nozzle or 0.25 Btu/cubic inch/sec in aluminum ...
Courtney, J. C., Hertelendy, N. A., Lindsey, B. A.   +2 more
core   +1 more source

Linearly polarized, Q-switched Er-doped fiber laser based on reduced graphene oxide saturable absorber

, 2012
We demonstrate generation of linearly polarized pulses from a passively Q-switched Erbium-doped fiber laser. The cavity was designed using only polarization maintaining (PM) fibers and components, resulting in linearly polarized output beam with degree ...
Abramski, Krzysztof M., Jagiello, Joanna, Kozinski, Rafal, Librant, Krzysztof, Lipinska, Ludwika, Sobon, Grzegorz, Sotor, Jaroslaw, Zdrojek, Mariusz   +7 more
core   +1 more source

Curvature‐Tuned Friction at Electrified Ionic Liquid Interfaces

Advanced Functional Materials, EarlyView.
Graphene curvature plays a key role in friction electrotunability at single‐asperity contacts lubricated by ionic liquids. A 9 nm radius yields stronger tunability than larger radii, with distinct friction coefficients at low and high loads indicating a shift in the slippage plane.
Wei Song, Md Ashiqur Rahman, Qianlu Zheng, Nathaniel Hawthorne, James D. Batteas, Rui Qiao, Rosa M. Espinosa‐Marzal   +6 more
wiley   +1 more source

Construction and investigation of paraffin based phase change composite containing chitosan@expanded graphite aerogel as structure skeleton for low temperature thermal energy storage

Energy Reports
This work concerns the construction of a paraffin based shape-stable phase change composite with the use of chitosan@expanded graphite aerogel as structure skeleton for low temperature thermal energy storage application.
Jin Wang, Shengxian Hou, Xiangsheng Teng, Wenhao Zhang, Yanjiang Zhao, Chengjie You, Jiawen Xu, Shujuan Zhuang, Chuan Li   +8 more
doaj   +1 more source

ESTIMATION OF MEASUREMENT UNCERTAINTY IN THE DETERMINATION OF Fe CONTENT IN POWDERED TONIC FOOD DRINK USING GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY

Indonesian Journal of Chemistry, 2010
The evaluation of uncertainty measurement in the determination of Fe content in powdered tonic food drink using graphite furnace atomic absorption spectrometry was carried out.
Harry Budiman, Fransiska Sri H, Krismastuti Krismastuti, Nuryatini Nuryatini   +3 more
doaj   +1 more source