Results 111 to 120 of about 206,941 (297)

Molecules in the cold environment of a supersonic free-jet beam: from spectroscopy of neutral–neutral interactions to a test of Bell's inequality

Journal of Physics B: Atomic, Molecular and Optical Physics, 2006
The supersonic free-jet expansion technique has been used in different fields of research in physics, physical chemistry and chemistry to study vibrational and rotational molecular structures in ground and excited electronic energy states as well as in cold chemistry to study chemical reactions in a unique environment. The supersonic beam technique, as
Koperski, Jarosław, Fry, E. S.
openaire   +2 more sources

DNA‐Origami‐Assembled Rhodium Nanoantennas for Deep‐UV Label‐Free Single‐Protein Detection

Advanced Functional Materials, EarlyView.
Deep‐UV autofluorescence of single proteins in DNA origami‐based rhodium nanoantennas. Precisely positioned within the plasmonic nanogap, proteins retain their native state while their intrinsic emission is strongly amplified, enabling label‐free single‐molecule detection and opening new opportunities for highly sensitive and specific biosensing ...
Nicco Corduri, Malavika Kayyil Veedu, Yifan Yu, Yanqiu Zou, Jie Liu, Denis Garoli, Guillermo P. Acuna, Jérôme Wenger, Karol Kołątaj   +8 more
wiley   +1 more source

Regarding Physical and Chemical Transformations with the Involvement of Water Near –45 °C

Конденсированные среды и межфазные границы, 2019
Objective. A hypothesis about a new mechanism for accelerating chemical reactions involving supercooled water near -45 °С is presented. The hypothesis is based on the properties of the second critical point of water at a temperature of –53 °C and a ...
Georgy S. Bordonsky, Alexander A. Gurulev   +1 more
doaj   +1 more source

Ultracold Molecule Assembly with Photonic Crystals

, 2017
Photoassociation (PA) is a powerful technique to synthesize molecules directly and continuously from cold and ultracold atoms into deeply bound molecular states.
Hung, Chen-Lung, Kim, May E., Pérez-Ríos, J.   +2 more
core   +1 more source

Amyloidogenic Peptide Fragments Designed From Bacterial Collagen‐like Proteins Form Hydrogel

Advanced Functional Materials, EarlyView.
This study identified amyloidogenic sequence motifs in bacterial collagen‐like proteins and exploited these to design peptides that self‐assemble into β‐sheet fibers and form hydrogels. One hydrogel supported healthy fibroblast growth, showing promise for biocompatible materials. Our work demonstrates that bacterial sequences can be harnessed to create
Vamika Sagar, Xuen J Ng, Lukas Lechel, Ashish Chand Rajwar, Hendrik Bargel, Abhishek A. Jalan   +5 more
wiley   +1 more source

Exploring the formation and alteration of organics in ice: experimental insights for astrochemistry and space missions

Earth, Planets and Space
The formation and alteration of organic molecules within the Solar System and beyond is closely related to the life cycle of ice in space. Cold molecular clouds in the interstellar medium (ISM) are regions, where volatile molecules condense onto ...
Florence Hofmann, Nariste Asanova, Riccardo Giovanni Urso, Andreas Elsaesser   +3 more
doaj   +1 more source

Ice Film Growth Thickness on Simulated Lunar Rock Surfaces as a Function of Controlled Water Vapor Concentration

Aerospace
A mathematical model was established to describe the sublimation and diffusion of water molecules and their adsorption onto cold traps. This model was used to analyze the combined influence mechanisms of sublimation temperature and ambient pressure on ...
Weiwei Zhang, Desen Wang, Wei Xu, Ye Tian, Fenghe Bai, Wentao Xiao, Minghui Zhuang, Yanbing Lin, Jingrun Guo, Shengyuan Jiang   +9 more
doaj   +1 more source

Raman spectroscopy and inelastic collisions of cold molecules

, 2015
Raman spectroscopy of supersonic gas jets can be employed to record the spectra of medium-sized molecules at temperatures well below 100 K, and to study rotationally-inelastic collisions of a number of small molecules [1-5]. Number densities and rotational populations can be directly measured along the jet axis from the rotational and/or vibrational ...
Fernández Sánchez, José María, Tejeda, Guzmán, Moreno, Elena, Gámez, Francisco, Carmona-Novillo, Estela, Hernández, Marta I., Montero, Salvador   +6 more
openaire   +1 more source

Establishing a Model Precursor System: Over a Decade of Research on Carbon Dots from the Citric Acid‐Urea System

Advanced Functional Materials, EarlyView.
The citric acid/urea (CA‐Urea) precursor system offers a versatile, scalable route to carbon dots with tunable luminescence and multifunctionality. Mechanistic insights into precursor chemistry and reaction parameters have enabled doping, surface modification, and hybridization strategies, yielding CDs for luminescent devices, sensing, catalysis ...
Yupeng Liu, Zhiqi Cai, Xiangxin Sun, Hanyi Zhang, Yiming Hao, Jun Wu, Zekun Yan, Xue Wu, Yiqi Liang, Liming Wang, Songnan Qu   +10 more
wiley   +1 more source

The Terminal Domains of Collagen‐Like Silk Direct Molecular Interactions and Liquid–Liquid Phase Separation‐Mediated Material Assembly

Advanced Functional Materials, EarlyView.
Terminal domains of recombinant collagen‐like silk regulate hierarchical self‐assembly across molecular and material scales. We show that terminal domains of collagen‐like silk enhance triple‐helix stability and drive liquid–liquid phase separation, enabling reversible formation of fibers and self‐healing films.
Mengjie Shen, Daniil Astapov, Nur Alia Oktaviani, Mami Goto, Keiji Numata, A. Sesilja Aranko   +5 more
wiley   +1 more source