Results 121 to 130 of about 35,379 (304)

Preparation of nanocellulose aerogels by ice-templating: Structure regulation and performance study

Industrial Crops and Products
In the context of energy shortages, low utilization rates, and resource scarcity, the demand for novel and high-efficiency energy-saving materials is increasing daily. As promising thermal insulation materials, pore structures significantly influence the
Yueqi Wu, Lihong Yao
doaj   +1 more source

Quantum reflection of antihydrogen from nanoporous media

, 2012
We study quantum reflection of antihydrogen atoms from nanoporous media due to the Casimir-Polder (CP) potential. Using a simple effective medium model, we show a dramatic increase of the probability of quantum reflection of antihydrogen atoms if the ...
Dufour, G., Guérout, R., Lambrecht, A., Nesvizhevsky, V. V., Reynaud, S., Voronin, A. Yu.   +5 more
core   +3 more sources

Robust and Thermally Stable Silicone Aerogels with Hyperconnected Network via Kinetically Optimized Hyperbranched Silane Precursors

Advanced Science, EarlyView.
Reactivity‐Programmed Assembly: A kinetic‐control strategy is reported for constructing hyperconnected silicone aerogels with a robust “thick‐neck” architecture. By exploiting the reactivity disparity of precursors, flexible segments are uniformly embedded within a rigid skeleton.
Aoqing Yan, Guixiang Li, Yaolan Li, Yi Luo, Bin Liu, Zhe Su, Hao Tian, Wei Shi, Bo Niu, Donghui Long   +9 more
wiley   +1 more source

Gas adsorption/desorption in silica aerogels: a theoretical study of scattering properties

, 2005
We present a numerical study of the structural correlations associated to gas adsorption/desorption in silica aerogels in order to provide a theoretical interpretation of scattering experiments. Following our earlier work, we use a coarse-grained lattice-
E. Hoinkis, E. Kierlik, F. Detcheverry, G. Porod, G. Tarjus, J. P. Sethna, M. H. W. Chan, M. L. Rosinberg, S. J. Gregg   +8 more
core   +1 more source

Autonomous and Continuous Atmospheric Water Harvesting Using Modified Wood

Advanced Science, EarlyView.
A rigid, hydroxyl‐rich wood skeleton with graded channels is used as a multifunctional host to co‐incorporate a PNipam/PAA network and LiCl, creating a high‐performance sorbent for atmospheric water harvesting. The composite achieves rapid sorption, efficient low‐temperature desorption, and stable cycling, enabling a solar‐powered device with a high ...
Shiheng He, Jiaqi Su, Tianting Leng, Yujian Song, Jidong Dong, Pengfei Huo, Zhenhua Gao, Shuaiyuan Han   +7 more
wiley   +1 more source

Universal Behaviour of the Superfluid Fraction and Tc of He-3 in 99.5% Open Aerogel

, 1999
We have investigated the superfluid transition of He-3 in a 99.5% porosity silica aerogel. This very dilute sample shows behaviour intermediary between bulk He-3 and He-3 confined to the denser aerogels previously studied.
A. A. Abrikosov, A. A. Abrikosov, A. Golov, A. Hasmy, A. Hasmy, A. J. Leggett, B. I. Barker, D. T. Sprague, D. T. Sprague, D. W.Schaefer, E. V. Thuneberg, G. Lawes, H. Alles, H. Alles, J. M. Parpia, J. V. Porto, J. V. Porto, J. V. Porto, K. Matsumoto, M. Franz, N. Mulders, R. Hanninen, R. Vacher, S. C. J. Kingsley, V. Ambegaokar   +24 more
core   +1 more source

Ultra‐Low Intensity Continuous Wave Laser Ablation Propulsion With Graphene‐Engineered Wood

Advanced Science, EarlyView.
Graphene delignified wood converts continuous wave laser energy into thrust. Laser propulsion experiments in vacuum reveal the lowest laser ablation threshold intensities and the greatest density‐normalized specific impulse in literature. The results highlight graphene delignified wood as a potential efficient, sustainable, strong, and lightweight ...
Afnan S. M. Elmubasher, Rami Elkaffas, Mohamed Hamid Salim, Basel Altawil, Chanaka Sandaruwan, Shanavas Shajahan, Ahsan Baidar Bakht, Irfan Hussain, Blaise L. Tardy, Sean S. M. Swei, Yarjan Abdul Samad   +10 more
wiley   +1 more source

Cellulose, graphene and graphene-cellulose composite aerogels and their application in water treatment: a review

Discover Materials
Due to their unique properties such as outstanding specific surface areas, aerogels can potentially offer a cost-effective and efficient water and wastewater treatment solution thereby solving the worldwide ever-growing water pollution conundrum.
Karabo G. Sekwele, Shepherd M. Tichapondwa, Washington Mhike   +2 more
doaj   +1 more source

New universality class for the three-dimensional XY model with correlated impurities: Application to $^4$He in aerogels

, 2003
Encouraged by experiments on $^4$He in aerogels, we confine planar spins in the pores of simulated aerogels (diffusion limited cluster-cluster aggregation) in order to study the effect of quenched disorder on the critical behavior of the three ...
A. Hasmy, C. Vásquez R., H. J. Herrmann, J. Feder, M. Chan, M. Kolb, M. E. J. Newman, R. Jullien, R. Paredes V.   +8 more
core   +1 more source

Microsphere‐Modulated Sensing‐in‐Energy Supercapacitor With Self‐Filtering Ultra‐Large Signal Under High‐g Shocks

Advanced Science, EarlyView.
To overcome severe signal oscillation under extreme impact conditions, this work presents a Sensing‐in‐Energy microdevice which integrates a MEMS inertial structure directly within a supercapacitor electrolyte cavity. Utilizing shock‐driven transient contact and electrolyte damping for signal self‐filtering, it achieves weak‐oscillation, large ...
Zhihao Zheng, Yiqun Wang, Kaiyou Liu, Shancheng Luan, Yajiang Yin, Xiaofeng Wang, Keren Dai, Zheng You   +7 more
wiley   +1 more source