Results 71 to 80 of about 549,668 (213)

Ultrathin Freestanding BiFeO3 Membranes Grown by Pulsed Laser Deposition

Small, EarlyView.
Ultrathin freestanding BiFeO3 membranes down to five‐unit cells are realized by pulsed laser deposition using a water‐soluble Sr3Al2O6 sacrificial layer. Strontium diffusion is revealed to drive the spontaneous formation of an Aurivillius‐like phase, while ultrathin SrRuO3 interlayers suppress interfacial intermixing, preserve polar tetragonality, and ...
Yifan Zhao, Bixin Yan, Christoph Dräyer, Morgan Trassin, Marta D. Rossell   +4 more
wiley   +1 more source

Two‐Photon Endomicroscopy for Image‐Guided Magnetic Micro‐Agents

Small, EarlyView.
Image‐guided manipulation of magnetic micro‐agents requires localized fluorescence feedback capable of resolving dynamic interactions in confined environments. This study introduces a two‐photon endomicroscopy platform for real‐time motion tracking, multicolor micro‐agent discrimination, and imaging through biological tissue.
Juan J. Huaroto, Gert‐willem Römer, Ivo M. Vellekoop, Sarthak Misra   +3 more
wiley   +1 more source

Silicon Photomultipliers in the CMS upgrade

Journal of Instrumentation
Abstract Silicon Photomultipliers (SiPM) will be used extensively in the upgraded CMS detector at the Large Hadron Collider. SiPMs have already been implemented into the barrel and endcap hadron calorimeters (HCAL) as part of the Phase I upgrade, and hundreds of thousands of SiPMs will be used for two new Phase II subdetectors,
A. Heering, A. Karneyeu, Y. Musienko, M. Wayne   +3 more
openaire   +2 more sources

Modeling the Nonlinear Response of Silicon Photomultipliers [PDF]

IEEE Sensors Journal, 2019
A statistical model of the nonlinear response of silicon photomultipliers is presented. It includes losses of both the photodetection efficiency and the gain during pixel recovery periods as well as the effect of correlated and uncorrelated noise. The model provides either the mean output charge of a SiPM for incident light pulses of arbitrary shape or
openaire   +3 more sources

Dual‐Component Spidroin‐Based Hydrogels: A Mechanically Tunable Platform for 2D and 3D Cell Culture

Small, EarlyView.
A dual‐component recombinant spider silk hydrogel platform was developed by combining NT2RepCT with a bioactive vitronectin‐functionalized spidroin domain. The hydrogels self‐assemble under physiological conditions, exhibit tunable mechanical properties, and support 2D and 3D cell culture, providing a versatile platform for mechanobiological studies ...
Sanna Korpela, Urmimala Chatterjee, Gabriele Greco, Benjamin Schmuck, Rakesh Kumar, Olga Shilkova, Cecilia Götherström, Anna Rising, Teemu O. Ihalainen   +8 more
wiley   +1 more source

Two-photon imaging with silicon photomultipliers

Optics Express, 2019
We compared performance of recently developed silicon photomultipliers (SiPMs) to GaAsP photomultiplier tubes (PMTs) for two-photon imaging of neural activity. Despite higher dark counts, SiPMs match or exceed the signal-to-noise ratio of PMTs at photon rates encountered in typical calcium imaging experiments due to their low pulse height variability ...
Mehrab N, Modi, Kayvon, Daie, Glenn C, Turner, Kaspar, Podgorski   +3 more
openaire   +2 more sources

New perspectives for studying nuclear collective states and exotic shapes with the EAGLE gamma spectrometer and the upgraded Recoil Filter Detector at HIL UW [PDF]

EPJ Web of Conferences
The integration of the upgraded Recoil Filter Detector (RFD) with the EAGLE gamma-ray spectrometer at the Heavy Ion Laboratory, University of Warsaw, provides new opportunities for high-resolution in-beam spectroscopy.
Matejska-Minda Magdalena, Hiver Corentin, Bednarczyk Piotr, Duda Dominik, Ciemała Michał, Cieplicka-Oryńczak Natalia, Dedes Irene, Fornal Bogdan, Grębosz Jerzy, Iskra Łukasz W., Kmiecik Maria, Kulessa Paweł, Maj Adam, Sowicki Bogdan, Ziębliński Mirosław, Palacz Marcin, Hadyńska-Klęk Katarzyna, Jaworski Grzegorz, Komorowska Michalina, Kowalczyk Michał, Napiorkowski Paweł J., Panasenko Serghii, Piętka Iwona Z., Samorajczyk-Pyśk Justyna, Sekrecka Paulina, Špaček Andrej, Tucholski Andrzej, Wrzosek-Lipska Katarzyna, Malinowski Adam, Kuti Istvan, Molnár József   +30 more
doaj   +1 more source

Resonance‐Enhanced Four‐Wave Mixing Imaging for Mapping Defect Regions in Vanadium‐Doped WS2 Monolayers

Small Methods, EarlyView.
Resonant four‐wave mixing (FWM) microscopy reveals a spatial modulation of the third‐order nonlinear optical response in vanadium‐doped WS2 monolayers. This robust nonlinear contrast technique tracks the preferential accumulation of vanadium dopants along the structural bisection lines of the synthesized flakes.
Felipe Menescal, Frederico B. Sousa, Mingzu Liu, Ana P. M. Barboza, Igor F. Curvelo, Matheus J. S. Matos, Da Zhou, Bernardo R. A. Neves, Helio Chacham, Mauricio Terrones, Bruno R. Carvalho, Leandro M. Malard   +11 more
wiley   +1 more source

Polymorphism and NIR Photoluminescence of Anhydrous Ytterbium(III) Acetate: Reversible Transformations of Three Polar Structures in the Temperature Range 100–593 K

Zeitschrift für anorganische und allgemeine Chemie, EarlyView.
Crystallographic variety, reversible transitions, and NIR emission of anhydrous Yb(OAc)3: identification of a new γ‐phase results in altogether three modifications all crystallizing in polar space groups related by reversible solid–solid phase transitions.
Maksim A. Zhernakov, Tobias Stürzer, Yuriy G. Denisenko, Jakob Möbs, Klaus Müller‐Buschbaum   +4 more
wiley   +1 more source

Light Readout of Small Scintillators Using SiPM Photosensors

Sensors
During the last two decades, relevant progress has been achieved in silicon photomultiplier (SiPM) technology, such that in an increasing number of radiation detection applications they are proposed as a viable alternative to traditional photomultiplier ...
Chiara Rita Failla, Simone Amaducci, Gaetano Elio Poma, Paolo Finocchiaro   +3 more
doaj   +1 more source