Results 71 to 80 of about 661,571 (355)

Enhancing Optoelectronic Properties in Phthalocyanine‐Based SURMOFs: Synthesis of ABAB Linkers by Avoiding Statistical Condensation with Tailored Building Blocks

Advanced Functional Materials, EarlyView.
A novel phthalocyanine (PC)‐based metal–organic framework (MOFs) is synthesized using ditopic PC linkers obtained through regioselective statistical condensation. The resulting MOF exhibits significant improvements in electronic absorption, thereby enhancing the material's performance in light harvesting and energy conversion.
Lukas S. Langer, Mareen Stahlberger, Xiaojing Liu, Yi Luo, Niklas E. Häußermann, Puja Singhvi, Yidong Liu, Olaf Fuhr, Martin Nieger, Lars Heinke, Thomas Heine, Christof Wöll, Stefan Bräse   +12 more
wiley   +1 more source

‘Acidity’ of Quartz [PDF]

Nature, 1939
WHEN quartz powder, obtained by finely grinding pure Brazilian pebble, is put into neutral water the pH is rapidly lowered to about 6.4. This acidity has been attributed to silicic acid, but such an explanation seems unlikely for the following reasons.
openaire   +2 more sources

Morse stretch potential charge equilibrium force field for ceramics: Application to the quartz-stishovite phase transition and to silica glass [PDF]

, 1999
To predict phase transitions in ceramics and minerals from molecular dynamics simulations, we have developed a force field in which the charges are allowed to readjust instantaneously to the atomic configurations.
Demiralp, Ersan, Goddard, William A., III, Çağin, Tahir   +2 more
core   +1 more source

Photothermal Hydrogel with Mn3O4 Nanoparticles Alleviates Intervertebral Disc Degeneration by Scavenging ROS and Regulating Extracellular Matrix Metabolism

Advanced Functional Materials, EarlyView.
The MPTT‐nanozyme‐hydrogel system (Mn3O4@ChS‐HA) provides a multifunctional therapeutic strategy for intervertebral disc degeneration (IVDD), effectively targeting oxidative stress and enhancing AF repair by restoring extracellular matrix (ECM) and redox homeostasis.
Yangyang Chen, Chan Xue, Feifei Ni, Binwu Hu, Miaoheng Yan, He Zhang, Yuxiang Hu, Xiaoyao Peng, Guangfang Li, Yu Han, Hongjian Liu, Zengwu Shao, Qin Wang, Yulong Wei   +13 more
wiley   +1 more source

First-Principles Study on Structural Properties of GeO$_2$ and SiO$_2$ under Compression and Expansion Pressure

, 2011
The detailed analysis of the structural variations of three GeO$_2$ and SiO$_2$ polymorphs ($\alpha$-quartz, $\alpha$-cristobalite, and rutile) under compression and expansion pressure is reported.
Böhm, Catti, Chelikowsky, Chelikowsky, Christie, Delabie, Demuth, Downs, Grimm, Hamann, Hazen, Hohenberg, Hosoi, Houssa, Jorgensen, Kageshima, Keskar, Kleinman, Kobayashi, Kohn, Levien, Liu, Matsubara, O'Keefee, Ono, Ono, Perdew, Pluth, Prakapenka, Sahnoun, Saito, See, Sevik, Shoichiro Saito, Smith, Sugiyama, Tomoya Ono, Troullier, Vaccari   +38 more
core   +1 more source

Stress distribution during cold compression of a quartz aggregate using synchrotron X-ray diffraction: Observed yielding, damage, and grain crushing [PDF]

, 2017
We report new experimental results that quantify the stress distribution within a quartz aggregate during pore collapse and grain crushing. The samples were probed with synchrotron X-ray diffraction as they were compressed in a multianvil deformation ...
Chen, H, Chen, X, Cheung, CSN, Li, L, Meredith, PG, Weidner, DJ, Whitaker, ML   +6 more
core   +1 more source

Photoswitchable Conductive Metal–Organic Frameworks

Advanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu, Mersad Mostaghimi, Abhinav Chandresh, Saibal Jana, Wolfgang Wenzel, Lars Heinke   +5 more
wiley   +1 more source

Energy Performance of Non-Conventional Metal Tubular Systems via a New Multiaxial [PDF]

MATEC Web of Conferences
This experimental study investigates the effect of a new loading path characterized by a new multiaxial alternation path, on the mechanical behaviour of metallic tubular structures. These are simple thin-walled tubes, recognized as one of the best energy
Baleh Rachid, Belguebli Hayat
doaj   +1 more source

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

Advanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong, William D. J. Tremlett, Lucy Hart, Beier Hu, Zhuoran Qiao, Patipan Sukpoonprom, Sarah Fearn, Edoardo Angela, Matilde Brunetta, Demosthenes C. Koutsogeorgis, Nikolaos Kalfagiannis, Davide Nodari, Martyn A. McLachlan, Piers R. F. Barnes, Artem A. Bakulin, Nicholas J. Long, Nicola Gasparini   +16 more
wiley   +1 more source

A simple electrometer for measuring small photoelectric currents [PDF]

, 1969
Quartz-fiber direct-indicating pocket dosimeter is a small-current integrating electrometer. By attaching the photocathode to the quartz fiber terminal and the photoelectron collector to the barrel of the dosimeter and by charging the device to 150 V, a ...

core   +1 more source