Results 21 to 30 of about 27,399 (223)

Trace Nickel Activated Biphasic Core‐CuOii/Shell‐CuOi Secondary Microspheres Enable Room Temperature Parts‐Per‐Trillion‐Level NO2 Detection

Advanced Engineering Materials, EarlyView.
An idea of designing novel sensors is proposed by creating appropriate Schottky barriers and vacancies between isomorphous Core‐CuOii/ Shell‐CuOi secondary microspheres and enhancing catalytic and spill‐over effects, and electronegativity via spontaneous biphasic separation, self‐assembly, and trace‐Ni‐doping.
Bala Ismail Adamu, Peipei Chen, Shafia Mukhtar Ibrahim, Mukhtar Lawan Adam, Attia Falak, Mokhotjwa Simon Dhlamini, Hanfu Wang, Lingxiang Jiang, Weiguo Chu   +8 more
wiley   +1 more source

Stable ultrafast graphene hot-electron source on optical fiber

Nature Communications
A stable and durable ultrafast electron source is highly desirable for sophisticated vacuum electron technologies. However, free-space excitations based on ultrahigh-power or deep-ultraviolet pulsed lasers usually cause cathode material damage and ...
Guangjie Yao, Hao Hong, Xu Zhou, Kaifeng Lin, Huazhan Liu, Yilong You, Chang Liu, Ke Chen, Chi Li, Jianbo Yin, Zhujun Wang, Xuewen Fu, Qing Dai, Dapeng Yu, Kaihui Liu   +14 more
doaj   +1 more source

Control of the Polarization of a Vacuum-Ultraviolet, High-Gain, Free-Electron Laser

Physical Review X, 2014
The two single-pass, externally seeded free-electron lasers (FELs) of the FERMI user facility are designed around Apple-II-type undulators that can operate at arbitrary polarization in the vacuum ultraviolet-to-soft x-ray spectral range.
Enrico Allaria, Bruno Diviacco, Carlo Callegari, Paola Finetti, Benoît Mahieu, Jens Viefhaus, Marco Zangrando, Giovanni De Ninno, Guillaume Lambert, Eugenio Ferrari, Jens Buck, Markus Ilchen, Boris Vodungbo, Nicola Mahne, Cristian Svetina, Carlo Spezzani, Simone Di Mitri, Giuseppe Penco, Mauro Trovó, William M. Fawley, Primoz R. Rebernik, David Gauthier, Cesare Grazioli, Marcello Coreno, Barbara Ressel, Antti Kivimäki, Tommaso Mazza, Leif Glaser, Frank Scholz, Joern Seltmann, Patrick Gessler, Jan Grünert, Alberto De Fanis, Michael Meyer, André Knie, Stefan P. Moeller, Lorenzo Raimondi, Flavio Capotondi, Emanuele Pedersoli, Oksana Plekan, Miltcho B. Danailov, Alexander Demidovich, Ivaylo Nikolov, Alessandro Abrami, Julien Gautier, Jan Lüning, Philippe Zeitoun, Luca Giannessi   +47 more
doaj   +1 more source

The effect of relative plasma plume delay on the properties of complex oxide films grown by multi-laser multi-target combinatorial pulsed laser deposition [PDF]

, 2009
We report the effects of relative time delay of plasma plumes on thin garnet crystal films fabricated by dual-beam, combinatorial pulsed laser deposition.
Amoruso, Darby, Doggett, Dorneles, Gazia, Gottmann, Grivas, James G. Lunney, Katherine A. Sloyan, May-Smith, May-Smith, Norton, Peter, Robert W. Eason, Timothy C. May-Smith, Wood   +15 more
core   +1 more source

Thresholds for Laser-Induced Ion Formation from Aerosols in a Vacuum Using Ultraviolet and Vacuum-Ultraviolet Laser Wavelengths [PDF]

Aerosol Science and Technology, 1997
ABSTRACT The minimum laser fluence required for the formation of ions from aerosol particles in a vacuum as a function of a number of parameters has been investigated. Although the influences of various particle properties are complex, the threshold energy density does depend on light absorption and lattice energy.
David S. Thomson, Ann M. Middlebrook, Daniel M. Murphy   +2 more
openaire   +1 more source

Removing Homocoupling Defects in Alkoxy/Alkyl‐PBTTT Enhances Polymer:Fullerene Co‐Crystal Formation and Stability

Advanced Functional Materials, EarlyView.
PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu, Jochen Vanderspikken, Paola Mantegazza, Stefania Moro, Mouna Hamid, Sigurd Mertens, Niko Van den Brande, Laurence Lutsen, Vincent Lemaur, David Beljonne, Giovanni Costantini, Koen Vandewal, Bruno Van Mele, Wouter Maes, Bart Goderis   +14 more
wiley   +1 more source

High-energy lasers by using distributed reflection: A concept [PDF]

, 1975
Lasers may be made with higher energy photons than heretofore possible. It has been proposed that vacuum ultraviolet lasing can be obtained by bombarding superfluid helium with electron beam, while coupling acoustic energy into helium to set up standing ...
Saffren, M. M.
core   +1 more source

Spectroscopy of formaldehyde in the 30140-30790cm^-1 range

, 2008
Room-temperature absorption spectroscopy of formaldehyde has been performed in the 30140-30790cm^-1 range. Using tunable ultraviolet continuous-wave laser light, individual rotational lines are well resolved in the Doppler-broadened spectrum.
Apel, Avdeenkov, Avdeenkov, Bethlem, Bjorklund, Bjorklund, Bowman, Brand, Cantrell, Clark, Clouthier, Co, Demtröder, Dieke, Doyle, Gerhard Rempe, Grosjean, Herzberg, Horowitz, Horowitz, Hudson, Junglen, Krems, Markus Schenk, Martin Zeppenfeld, McQuigg, Meerts, Meerts, Meerts, Michael Motsch, Michael Schmitt, Moore, Moortgart, Motsch, Moule, Pepijn W.H. Pinkse, Pope, Rangwala, Reilly, Riedel, Smith, Spence, Townes, W. Leo Meerts, Watson, Watson, Williams, Zeppenfeld   +47 more
core   +2 more sources

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

Latent image diffraction from submicron photoresist gratings [PDF]

, 1992
Light scattering from latent images in photoresist is useful for lithographic tool characterization, process monitoring, and process control. In particular, closed‐loop control of lithographic processes is critical for high yield, low cost device ...
Giapis, Konstantinos P., Gottscho, Richard A., Green, Christian A., Hayes, Todd R., Yoon, Euijoon   +4 more
core   +1 more source