Results 61 to 70 of about 64,037 (214)

Experimental study on pore expansion and permeability enhancement in coal induced by pulsed ultrasonic wave

矿业科学学报
This study attempts to investigate the effects of pulsed ultrasonic wave on the pore structure of coal matrix and the patterns of gas seepage. We developed an acoustic-liquid coupling ultrasonic excitation experimental platform for coal samples to ...
LIN Haifei, ZHOU Xing, HAO Hejie, HU Biao, YAN Min, WANG Ruizhe, QIU Yue, ZHANG Xiaoying   +7 more
doaj   +1 more source

Quenching Spin Decoherence in Diamond through Spin Bath Polarization

, 2008
We experimentally demonstrate that the decoherence of a spin by a spin bath can be completely eliminated by fully polarizing the spin bath. We use electron paramagnetic resonance at 240 gigahertz and 8 Tesla to study the spin coherence time $T_2$ of ...
A. Schweiger, David D. Awschalom, Johan van Tol, Mark S. Sherwin, Ronald Hanson, Susumu Takahashi   +5 more
core   +2 more sources

Transparent UV‐Curable Self‐Sanitizing Coatings Applicable to Diverse Surfaces and High‐Touch Screens to Mitigate Deadly Pathogen Transmission

Advanced Functional Materials, EarlyView.
Development of a transparent, self‐sanitizing antimicrobial coating technology applicable to a wide range of materials and surfaces‐including touchscreens, transparent substrates, and metal, plastic, and glass‐regardless of pathogen type. The spray‐coated, UV‐cross‐linked imidazole‐based quaternary ammonium chloride materials provide broad‐spectrum ...
Surjith Kumaran, Sumin Han, Euna Oh, Chunghee Jo, Hyerin Shin, Dae‐Hong Ko, Hyo‐Jick Choi   +6 more
wiley   +1 more source

FPGA based digital signal processing for EPR spectroscopy with an application to MRI [PDF]

, 2011
Electron Paramagnetic Resonance (EPR), a magnetic resonance technique similar to nuclear magnetic resonance, detects paramagnetic species such as free radicals.
Duraiswamy, Punithavathi
core  

Nuclear Spin Dynamics of Ionized Phosphorus Donors in Silicon

, 2012
We demonstrate the coherent control and electrical readout of the nuclear spins of ionized phosphorus donors in natural silicon. By combining pulsed illumination with coherent electron spin manipulation, we selectively ionize the donor depending on its ...
Brandt, Martin S., Dreher, Lukas, Hoehne, Felix, Stutzmann, Martin   +3 more
core   +1 more source

Facet‐Engineered S‐Scheme Heterostructure With Enhanced Active Sites for Efficient Photocatalytic Degradation of Organic Contaminants

Advanced Functional Materials, EarlyView.
The facet‐engineered ZnO/Zn3In2S6 heterostructure, dominated by {001} plane coupling, exposes abundant unsaturated Zn sites with elongated Zn─O bonds, directing photoexcited charge carriers along an S‐scheme pathway and suppressing recombination. Enhanced interfacial Zn adsorption toward bisphenol A and methylene blue further synergistically promotes ...
Yang Yang, Zisheng Du, Hongyuan Yang, Debabrata Bagchi, Ruotao Yang, Prashanth W. Menezes, Sugang Meng   +6 more
wiley   +1 more source

A miniaturized dual-mode continuous-wave and pulsed pumping ODNP platform

Journal of Magnetic Resonance Open
In this paper, we present the design and experimental validation of a miniaturized Overhauser dynamic nuclear polarization (ODNP) platform for both continuous-wave (CW) and pulsed DNP enhancement experiments at a B0 field strength of 0.25T.
Qing Yang, Hadi Lotfi, Michal Kern, Frederik Dreyer, Mazin Jouda, Jan. G. Korvink, Bernhard Blümich, Jens Anders   +7 more
doaj   +1 more source

High-Field (3.4 T) ENDOR Investigation of Asphaltenes in Native Oil and Vanadyl Complexes by Asphaltene Adsorption on Alumina Surface

Geofluids, 2019
Vanadyl porphyrin complexes in asphaltenes from heavy (Karmalinskoye) oil and in asphaltene films obtained as a result of adsorption on the surface of aluminum oxide were studied by electron paramagnetic resonance (EPR) and double electron-nuclear ...
Marat Gafurov, Georgy Mamin, Irina Gracheva, Fadis Murzakhanov, Yulia Ganeeva, Tatiana Yusupova, Sergei Orlinskii   +6 more
doaj   +1 more source

Analysis of PFG Anomalous Diffusion via Real-Space and Phase-Space Approaches

Mathematics, 2018
Pulsed-field gradient (PFG) diffusion experiments can be used to measure anomalous diffusion in many polymer or biological systems. However, it is still complicated to analyze PFG anomalous diffusion, particularly the finite gradient pulse width (FGPW ...
Guoxing Lin
doaj   +1 more source

Exciton‐Polaritons in Nanoscale Metal‐Organic Frameworks: A Platform for the Reversible Modulation of Strong Light‐Matter Coupling via the Chemical Environment

Advanced Functional Materials, EarlyView.
Strong exciton‐photon coupling is achieved by integrating porphyrin ligand‐based MOF nanoparticles in optical cavities, as evidenced by pronounced polariton branch anticrossing. The porous nature of the resonator enables precise, reversible tuning via vapor pressure, unlocking unprecedented chemical‐environment controlled dynamic polaritonic platforms ...
Beatriz de Sola‐Báez, Laura Caliò, Mauricio E. Calvo, Juan F. Galisteo‐López, Jesús Hernández‐Saz, Miriam Herrera‐Collado, Carolina Carrillo‐Carrión, Hernán Míguez   +7 more
wiley   +1 more source