Results 31 to 40 of about 777,259 (279)

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

DNA‐Templated 2D Heterostructures as Phototriggered Dynamic Nanohybrids: From Releasing Molecular Loads to Controlling Enzyme Biocatalytic Function

Advanced Functional Materials, EarlyView.
DNA strands are employed both as dynamic linkers and nanoscale templates for the integration of Ag2S nanoparticles on MoS2, which in turn imparted photothermal responsiveness; this feature permits the selective cargo (fluorophore, quantum dots or an enzyme) release from the MoS2 surface in response to local heat induced by light irradiation.
Kai Chen, Haosen Miao, Weiying Hong, Matteo Palma   +3 more
wiley   +1 more source

Wearable Smart Patches on Sustainable Chitosan With Reversible Microbial Growth‐Inhibitory Properties

Advanced Functional Materials, EarlyView.
ABSTRACT Chitosan, a polysaccharide upcycled from biowaste, has long promised sustainable, biocompatible, and antimicrobial films and devices, an appeal reinforced by its recent regulatory recognition, with several chitosan‐based antibacterial dressings gaining clearance through the Food and Drug Administration's 510(k) pathway.
Jacopo Nicoletti, Kubra Kocak, Andrea Michel, Enrico Cavarzerani, Ali Raza, Petr Rohzin, Nouha Loudhaief, Saimir Frroku, Nicolò Baldovin, Hazrat Bilal, Alvise Perosa, Maurizio Selva, Flavio Rizzolio, Luca Sbuelz, Sabrina Tamburini, Domenico De Fazio, Giovanni Antonio Salvatore   +16 more
wiley   +1 more source

Lasers and Excimer Light Sources (Ultraviolet)

, 2020
Ultraviolet B radiation has been used in the treatment of different immunomediated skin diseases. Different clinical studies reported the use of excimer lasers and lights in a wide variety of chronic and resistant localized dermatoses.
Sannino, Mario, Cannarozzo, Giovanni, Nouri, Keyvan, Steven Paul Nisticò, Nisticò, Steven Paul, Giovanni Cannarozzo, Keyvan Nouri, Mario Sannino   +7 more
core   +1 more source

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

Advanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand, Nuno Estrócio, Ji S. Kim, Babak Bakhit, Marian C. Istrate, Corneliu Ghica, Tiago Rebelo, Nives Strkalj, Abin Varghese, Bernardo Almeida, Luís S. Marques, Bipin Rajendran, Judith L. MacManus‐Driscoll, José P. B. Silva   +13 more
wiley   +1 more source

Implantable Ionic Memristors Based on Natural Polymer Heterojunctions

Advanced Functional Materials, EarlyView.
We report an implantable natural polymer‐based ionic memristor composed of hyaluronic acid, chitosan, and PDMS. The device achieved 98.94% accuracy in MNIST classification while reducing training time by 36.8% compared with a conventional artificial neural network (ANN).
Dong‐yup Lee, Byung Ik Park, Gihyeon Yim, Hyunjae Yoo, Sangjun Ma, Jundong Park, Jeong‐Yun Sun   +6 more
wiley   +1 more source

Blue and ultraviolet vertical-cavity surface-emitting lasers

, 2019
We will summarize state-of-the-art results in III-nitride-based vertical-cavity surface-emitting lasers (VCSELs) for blue and ultraviolet emission, including our schemes for optically guided devices and our approach for UV-VCSELs with double dielectric ...
Hashemi, Seyed Ehsan, Gustavsson, Johan, Haglund, \uc5sa, Hjort, Filip, Bengtsson, J\uf6rgen, Bergmann, Michael Alexander, Filip Hjort, Johan Gustavsson, Bergmann, Michael Alexander,, Gustavsson, Johan,, Hashemi, Seyed Ehsan,, Haglund, Åsa,, Jörgen Bengtsson, Hjort, Filip,, Åsa Haglund, Ehsan Hashemi, Bengtsson, Jörgen,, Michael Bergmann   +17 more
core   +2 more sources

Generation of vacuum ultraviolet vortex beams via near-threshold harmonics in argon gas driven by infrared Laguerre-Gaussian lasers

Communications Physics
Vortex light beams in the vacuum ultraviolet (VUV) range are in high demand for many applications. Specifically, the energy range of 10-17 eV is of interest as it enables probing the ultrafast dynamics of interband transitions and excitonic resonances in
Jiaxin Han, Bincheng Wang, Xiangyu Tang, Zhiming Yin, Yong Fu, Jiahao You, Baochang Li, Shengfei Wu, Cheng Jin   +8 more
doaj   +1 more source

Biomineral‐Inspired Organic/Inorganic Colloidal Liquid‐Crystalline Hybrids for Photoresponsive Adhesion

Advanced Functional Materials, EarlyView.
A new class of photoresponsive liquid‐crystalline (LC) adhesives based on biomineral‐inspired organic/inorganic colloidal hybrids is reported. These colloidal LC materials are formed by hybridization of a hydroxyapatite nanorod with azobenzene‐based forklike molecules.
Junya Uchida, Ryuta Kiguchi, Riki Kato, Yuta Nishina, Takashi Kato   +4 more
wiley   +1 more source

Ultrabroadband terahertz source and beamline based on coherent transition radiation

Physical Review Special Topics. Accelerators and Beams, 2009
Coherent transition radiation (CTR) in the THz regime is an important diagnostic tool for analyzing the temporal structure of the ultrashort electron bunches needed in ultraviolet and x-ray free-electron lasers.
S. Casalbuoni, B. Schmidt, P. Schmüser, V. Arsov, S. Wesch   +4 more
doaj   +1 more source