Results 141 to 150 of about 103,827 (310)

Bright continuously tunable vacuum ultraviolet source for ultrafast spectroscopy

Communications Physics
Ultrafast electron dynamics drive phenomena such as photochemical reactions, catalysis, and light harvesting. To capture such dynamics in real-time, femtosecond to attosecond light sources are extensively used.
Lucie Jurkovičová, Ltaief Ben Ltaief, Andreas Hult Roos, Ondřej Hort, Ondřej Finke, Martin Albrecht, Ziaul Hoque, Eva Klimešová, Akgash Sundaralingam, Roman Antipenkov, Annika Grenfell, Alexandr Špaček, Wojciech Szuba, Maria Krikunova, Marcel Mudrich, Jaroslav Nejdl, Jakob Andreasson   +16 more
doaj   +1 more source

Differentiation Between Humic and Non-Humic Substances Using Alkaline Extraction and Ultraviolet Spectroscopy.

J AOAC Int, 2023
Mayhew L, Singh AP, Li P, Perdue EM.
europepmc   +1 more source

Exploring Pb‐Chelation Chemistry in the Crystallization Dynamics of Halide Perovskites

Advanced Functional Materials, EarlyView.
A mechanism of how Pb‐chelation chemistry governs coordination geometry and initial nucleation behavior at the precursor level of halide perovskite, by regulating the deprotonation state of a chelating additive, is elucidated. This allows for innovative reaction‐system design principles that promote coherent growth while suppressing defect formation in
Byeong Jun Kim, Inseo Cho, Jung Geon Son, Yifan Yu, Gunhee Kim, Eunseo Shin, Seyeon Eom, Minsub Um, Subeom Shin, Hyungju Ahn, Dong Suk Kim, Hochan Song, Hyosung Choi, Jonghee Yang   +13 more
wiley   +1 more source

Iridescence Mimicking in Fabrics: A Ultraviolet/Visible Spectroscopy Study

Biomimetics
Poly(styrene-methyl methacrylate-acrylic acid) photonic crystals (PCs), with five different sizes (170, 190, 210, 230 and 250 nm), were applied onto three plain fabrics, namely polyamide, polyester and cotton.
Rui D. V. Fernandes, Alina Pranovich, Sergiy Valyukh, Andrea Zille, Tomas Hallberg, Kenneth Järrendahl   +5 more
doaj   +1 more source

Visible and ultraviolet laser spectroscopy of ThF

, 2019
The molecular ion ThF + is the species to be used in the next generation of search for the electron's Electric Dipole Moment (eEDM) at JILA. The measurement requires creating molecular ions in the eEDM sensitive state, the rovibronic ground state 3Δ 1 ,v
Zhou, Yan, Cheng, Lan, Ng, Kia Boon, Field, Robert W, Gresh, Daniel N., Cornell, Eric A., Ye, Jun   +6 more
core   +1 more source

Moving Beyond Oligoethers: Polar Side‐Chain Engineering for Aqueous Mixed Ionic–Electronic Conductors

Advanced Functional Materials, EarlyView.
We investigate how side‐chain chemistry and hydrogen bonding affect electrochemical doping in poly(propylenedioxythiophene) polymers. Replacing oligoether side chains with hydroxyl or carboxylic acid groups nearly triples electrochemical conductivity.
Joshua M. Rinehart, Anna M. Österholm, James F. Ponder Jr., Lucas Q. Flagg, Lee J. Richter, John R. Reynolds   +5 more
wiley   +1 more source

Inactivation effect and mechanism of ultrasound combined with ultraviolet treatment on Bacillus cereus spores

Journal of Agriculture and Food Research
Bacillus cereus is a common foodborne pathogen, and its formation of strongly resistant spores renders the pathogen difficult to eliminate completely using traditional sterilization methods.
Yajin Qi, Xiao Hu, Yi Chen, Ruiling Lv, Tian Ding   +4 more
doaj   +1 more source

High-resolution spectroscopy of G191-B2B in the extreme-ultraviolet

, 2002
We report a high-resolution (R = 3000-4000) spectroscopic observation of the DA white dwarf G191-B2B in the extreme-ultraviolet band 220-245 Å.
N. P. Bannister (7590155), M.P. Kowalski (7612079), J. S. Lapington (7590362), C. M. Brown (2010895), J. L. Culhane (7590371), J.F. Kordas (7612103), Martin A. Barstow (7579706), T. W. Barbee (7590374), J. A. Tandy (7590365), C.M. Brown (7612082), G.W. Fraser (7612085), J.L. Culhane (7612097), T.W. Barbee (7612100), R. G. Cruddace (7590347), J.A. Tandy (7612094), W. Goldstein (7590380), J. F. Kordas (7590377), B. Sanderson (7590368), D. Yentis (7590353), N.P. Bannister (7580114), J. E. Spragg (7590359), M. P. Kowalski (7590350), G. G. Fritz (7590383), G.G. Fritz (7612106), H. Gursky (7590356), G. W. Fraser (7578626), J.S. Lapington (7612091), R.G. Cruddace (7612076), J.E. Spragg (7612088)   +28 more
core  

High‐Index, Low‐Loss Optical Material Platforms for Ultra‐Broadband Ultraviolet‐to‐Visible Achromatic Metalenses

Advanced Functional Materials, EarlyView.
An integrated material platform combining engineered SiNx thin films and printable ZrO2 nanoparticle‐embedded resin enables broadband achromatic metalenses from the ultraviolet to visible range. The demonstrated meta‐optics achieve near‐diffraction‐limited focusing with minimal chromatic aberration.
Hyunjung Kang, Dongmin Jeon, Eunji Lee, Junsuk Rho   +3 more
wiley   +1 more source

Effects of ultraviolet-B radiation on plant growth, symbiotic function and concentration of metabolites in legumes and an assessment of F1 generation for carryover effects

, 2003
Bibliography: leaves 126-152.Reduction in ozone layer thickness in the stratosphere and the resultant increase in ground level of biologically active ultraviolet-B (UV-B) radiation prompted research into the effect of UV-B on growth and metabolism of ...
Chimphango, Samson
core