Results 91 to 100 of about 206,941 (297)

Internal-state thermometry by depletion spectroscopy in a cold guided beam of formaldehyde

, 2007
We present measurements of the internal state distribution of electrostatically guided formaldehyde. Upon excitation with continuous tunable ultraviolet laser light the molecules dissociate, leading to a decrease in the molecular flux.
Motsch, M., Pinkse, P. W. H., Rempe, G., Schenk, M., van Buuren, L. D., Zeppenfeld, M.   +5 more
core   +1 more source

Frustration of crystallisation by a liquid–crystal phase [PDF]

, 2017
Frustration of crystallisation by locally favoured structures is critically important in linking the phenomena of supercooling, glass formation, and liquid-liquid transitions.
González-Jiménez, Mario, Mosses, Joanna, Shebanova, Olga, Syme, Christopher D., Walton, Finlay, Wynne, Klaas   +5 more
core   +1 more source

From Single Atoms to Nanoparticles: Pathways Toward Efficient and Durable Pt/TiO2 Photocatalysts

Advanced Functional Materials, EarlyView.
Platinum single atoms on TiO2 nanosheets evolve into clusters and nanoparticles under ethanol photoreforming and thermal treatments. By controlling deposition and post‐treatments, particle size and location on specific facets are modulated. The study reveals how stability pathways determine efficiency, guiding the design of more durable photocatalysts.
Juan José Delgado, Enqi Bu, Yaning Han, Carlos López‐Cartes, Mónica Calatayud, Huiyan Pan, Xiaowei Chen   +6 more
wiley   +1 more source

Demonstration of full polarization control of soft X-ray pulses with Apple X undulators at SwissFEL using recoil ion momentum spectroscopy

Journal of Synchrotron Radiation
The ability to freely control the polarization of X-rays enables measurement techniques relying on circular or linear dichroism, which have become indispensable tools for characterizing the properties of chiral molecules or magnetic structures. Therefore,
Christoph Kittel, Antoine Sarracini, Sven Augustin, Ningchen Yang, Andre Al Haddad, Eugenio Ferrari, Gregor Knopp, Jonas Knurr, Ana Sofia Morillo-Candas, Iwona Swiderska, Eduard Prat, Nicholas Sammut, Thomas Schmidt, Christoph Bostedt, Marco Calvi, Kirsten Schnorr   +15 more
doaj   +1 more source

Shaping Ti3C2 MXene Nanospheres for Precision Near‐Infrared Photothermal Therapy

Advanced Functional Materials, EarlyView.
In this study, we report producing spherical MXenes via fs laser fragmentation of Ti3C2 flakes in liquid medium. The nanoparticles demonstrated pronounced light absorption and high photothermal conversion efficiencies of 68% and 63% under heating with NIR‐I and NIR‐II lasers, respectively.
Julia S. Babkova, Ivan V. Zelepukin, Konstantin G. Shevchenko, Gleb V. Tikhonowski, Lyubov V. Gorelik, Anton A. Popov, Anna S. Sogomonyan, Alina Yu. Kapitannikova, Ivan S. Kazantsev, Dmitry V. Dyubo, Daria A. Panova, Daniil I. Tselikov, Anton A. Minnekhanov, Aziz B. Mirkasymov, Georgy A. Ermolaev, Alexander V. Syuy, Gleb I. Tselikov, Aleksey V. Arsenin, Andrei V. Kabashin, Kostya S. Novoselov, Sergey M. Deyev, Valentyn S. Volkov   +21 more
wiley   +1 more source

Laser-induced electron diffraction: Imaging of a single gas-phase molecular structure with one of its own electrons

Structural Dynamics
Among the many methods to image molecular structure, laser-induced electron diffraction (LIED) can image a single gas-phase molecule by locating all of a molecule's atoms in space and time. The method is based on attosecond electron recollision driven by
K. Chirvi, J. Biegert
doaj   +1 more source

Slow and velocity-tunable beams of metastable He$_2$ by multistage Zeeman deceleration

, 2014
Metastable helium molecules (He$_2^*$) have been generated by striking a discharge in a supersonic expansion of helium gas from a pulsed valve. When operating the pulsed valve at room temperature, 77K, and 10K, the mean velocity of the supersonic beam ...
Agner, Josef A., Jansen, Paul, Merkt, Frédéric, Motsch, Michael, Schmutz, Hansjürg   +4 more
core   +1 more source

From Food to Power: Hydrogel Thermoelectrics for Ingestible Electronics

Advanced Functional Materials, EarlyView.
We introduce a fully edible thermoelectric–electrochromic platform that harvests heat from food and converts it into a visible color change. N‐type and p‐type hydrogel thermoelectric generators connected in series power anthocyanin‐based electrochromic displays, demonstrating the feasibility of safe, biodegradable, ingestible systems for on‐food ...
Antonia Georgopoulou, Bokeon Kwak, Dario Floreano, Esther Amstad   +3 more
wiley   +1 more source

MANIPULATION OF COLD CHIRAL MOLECULES USING ELECTRONIC AND ROTATIONAL SPECTROSCOPY [PDF]

Proceedings of the 2021 International Symposium on Molecular Spectroscopy, 2021
A. Hernandez-Castillo, Sandra Eibenberger-Arias, Gerard Meijer, Ju Lee, Johannes Bischoff   +4 more
openaire   +1 more source

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

Advanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit, Yifei Yang, Shawn Li, Yu‐Chia Chen, Qi Jia, Jian‐Ping Wang   +5 more
wiley   +1 more source