Results 61 to 70 of about 154,019 (297)

Nanostructured Amorphous Silicas Hydrophobized by Various Pathways [PDF]

ACS Omega, 2019
Various nanostructured amorphous silicas [fumed silicas such as crude (A-300), hydro-compacted (cA-300, TS 100), and precipitated silica Syloid 244] were modified by different polydimethylsiloxanes such as PDMS5, PDMS100, PDMS200, PDMS1000, and PDMS12500 (the label numbers show the viscosity (η) values) using dimethyl carbonate (DMC) as a siloxane-bond-
Iryna S. Protsak, Volodymyr M. Gun’ko, Ian M. Henderson, Evgeniy M. Pakhlov, Dariusz Sternik, Zichun Le   +5 more
openaire   +3 more sources

On‐Surface Indigo‐Based Bimolecular Coordination Networks with Programmable Regular or Vitreous Structure

Advanced Functional Materials, EarlyView.
A previously unreported coordination motif stabilising single Fe atoms by indigo chelation and pyridyl coordination on Au(111) has been revealed. By using planar tritopic pyridyl linkers (TPyB), extended 2D porous networks of indigo3(TPyB)2Fe6 form. These networks can be crystalline or vitreous and offer an environment where individual coordination ...
Hongxiang Xu, Ritam Chakraborty, Biao Yang, Dennis Meier, Joachim Reichert, Svetlana Klyatskaya, Mario Ruben, Shobhana Narasimhan, Johannes V. Barth, Anthoula C. Papageorgiou   +9 more
wiley   +1 more source

Molecular Dynamics Simulation Study of Solid Vibration Permeation in Microporous Amorphous Silica Network Voids

Membranes, 2019
Microporous silica membranes have silica polymer network voids smaller than 3 Å where only small gas molecules such as helium (2.6 Å) and hydrogen (2.89 Å) can be transported.
Tomohisa Yoshioka, Akihiro Nakata, Kuo-Lun Tung, Masakoto Kanezashi, Toshinori Tsuru   +4 more
doaj   +1 more source

Applying laboratory thermal desorption data in an interstellar context: sublimation of methanol thin films [PDF]

, 2009
Methods by which experimental measurements of thermal desorption can be applied in astrophysical environments have been developed, using the sublimation of solid methanol as an example.
Acharyya, Amandeep S. Bolina, Attard, Ayotte, Bahr, Bennett, Bolina, Brown, Brown, Christmann, Collings, Collings, Collings, Dartois, Dawes, Fraser, Fraser, Gong, Gálvez, Günster, Harris, Herbst, Hrbek, Jenniskens, Kimmel, King, Kouchi, Mark P. Collings, Markwick, Martin R. S. McCoustra, Maté, Nagaoka, Nishimura, Outka, Palmer, Peremans, Peremans, Pontoppidan, Pontoppidan, Pratt, Rendulic, Roberts, Rui Chen, Safarik, Sandford, Sexton, Sexton, Sexton, Simon D. Green, Smith, Sneh, Souda, Thrower, Tielens, Tielens, Torrie, Viti, Viti, Wang, Watanabe, Wendy A. Brown, Wolff, Woodruff, Wu, Zhang   +64 more
core   +1 more source

Quasi‐Static to Supersonic Energy Absorption of Nanoarchitected Tubulanes and Schwarzites

Advanced Functional Materials, EarlyView.
Nanoarchitected energy‐absorptive Tubulanes exhibit record energy absorption under quasi‐static conditions and exceptional inelastic energy dissipation under 750 m s−1 ballistics impact, with high performance spanning strain rates of 12 orders of magnitude.
Peter Serles, Alianna Maguire, Thomas Butruille, Jet Lem, Shuo Yang, Pedro Guerra Demingos, Sahar Choukir, Michel Haché, Boran Kumral, Katherine Jia, Charles Jia, Yu Zou, Chandra Veer Singh, Carlos M. Portela, Jun Lou, Pulickel M. Ajayan, Tobin Filleter   +16 more
wiley   +1 more source

Diatomite releases silica during spirit filtration [PDF]

, 2014
The purpose of this study was to ascertain whether diatomite is an inert filter aid during spirit filtration. Surely, any compound with a negative effect on the spirit composition or the consumer’s health could be dissolved.
Alguacil, Marcos, Gil Montero, María Luisa Almoraima, Gómez Benítez, Juan, Rosa Fox, Nicolás Daniel de la   +3 more
core   +2 more sources

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

Advanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum, Vinavadini Ramnarain, Nathaly Ortiz Peña, Dris Ihiawakrim, Clément Sanchez, Ovidiu Ersen   +5 more
wiley   +1 more source

Silica-Rich Bright Debris Disk around HD 15407A

, 2012
We report an intriguing debris disk towards the F3V star HD 15407A, in which an extremely large amount of warm fine dust (~ 10^(-7) M_Earth) is detected. The dust temperature is derived as ~ 500-600 K and the location of the debris dust is estimated as 0.
Bohren, Dorschner, Fabian, Fujiwara, Hammel, Holman, Houck, Ishiguro, Kemper, Kenyon, Koike, Lisse, Melis, Mikouchi, Murakami, Onaka, Oudmaijer, Rhee, Sargent, Takeda, van Leeuwen, Wyatt   +21 more
core   +1 more source

Polymorphism, superheating, and amorphization of silica upon shock wave loading and release [PDF]

, 2003
We present a detailed and quantitative examination of the thermodynamics and phase change mechanisms (including amorphization) that occur upon shock wave loading and unloading of silica.
Ahrens, Thomas J., Asimow, Paul D., Luo, Sheng-Nian   +2 more
core   +1 more source

Nanothermometry in Living Cells: Physical Limits, Conceptual and Material Challenges

Advanced Functional Materials, EarlyView.
Heat and temperature are fundamental to life. When nanothermometers began probing regions as small as a living cell, they triggered controversial claims of large intracellular temperature gradients. We review physical constraints energy‐conservation, entropy production, thermodynamic fluctuations, and molecular dynamics.
Taras Plakhotnik
wiley   +1 more source