Results 51 to 60 of about 2,028 (199)

Decoding Trap States in Working 2D Perovskite Multi‐Functional Devices

Advanced Science, EarlyView.
Illustration of the photoluminescence spectrum and energy‐level landscape governing trap‐mediated carrier dynamics in 2D F‐PEAI photodetectors. A novel approach capturing dynamic trap occupation and retrapping in devices under operating conditions, directly links defect energetics to carrier transport and enhanced photoresponse in multifunctional ...
Ioannis Leontis, Karl Jonas Riisnaes, Hoi Tung Lam, Rosanna Mastria, Luisa De Marco, Annalisa Coriolano, Steven Hepplestone, Monica Felicia Craciun, Saverio Russo   +8 more
wiley   +1 more source

Commissioning an Inexpensive Off‐The‐Shelf Spectrograph for Radial‐Velocity Studies

Astronomische Nachrichten, EarlyView.
ABSTRACT We present a way to set up an inexpensive out of the shelf spectrograph at a local observatory. Stability and resolution of the spectrograph are high enough for radial velocity determination of binary stars or determination of stellar characteristics. Even some exoplanets might be detectable via the radial velocity method.
Lukas Stock, Andreas Schrimpf
wiley   +1 more source

Miniaturized Optical Encoder with Micro Structured Encoder Disc

Applied Sciences, 2019
A novel optical incremental and absolute encoder based on an optical application-specific integrated circuit (opto-ASIC) and an encoder disc carrying micro manufactured structures is presented.
Jonathan Seybold, André Bülau, Karl-Peter Fritz, Alexander Frank, Cor Scherjon, Joachim Burghartz, André Zimmermann   +6 more
doaj   +1 more source

Modular and Automated Workflow for Streamlined Raman Signal Analysis

Journal of Raman Spectroscopy, EarlyView.
This study presents an automated workflow for preprocessing and analyzing Raman spectroscopy data, addressing key challenges such as noise suppression, baseline correction, and peak fitting using Voigt profiles. The method is validated on both synthetic and experimental spectra, demonstrating improved spectral fidelity and peak detection for biomedical
Mykyta Kizilov, Vsevolod Cheburkanov, Joseph Harrington, Vladislav V. Yakovlev   +3 more
wiley   +1 more source

Time-varying gradient metasurface with applications in all-optical beam steering

Nanophotonics, 2023
Integrating the large, subpicosecond nonlinear optical response of epsilon-near-zero (ENZ) materials with the broad design freedoms of plasmonic metasurfaces shows potential for creating rapidly modulated optical devices with possible applications in ...
Karimi Mohammad, Alam M. Zahirul, Upham Jeremy, Reshef Orad, Boyd Robert W.   +4 more
doaj   +1 more source

Development of Selective Plane Illumination Surface Enhanced Raman Scattering Spectral Microscopy for Improved Cellular Imaging

Journal of Raman Spectroscopy, EarlyView.
Selective plane illumination (SPI) is combined with SERS spectral imaging to reduce background, improve image contrast, and enable improved spectroscopy from molecules on the surface of nanoparticles. This approach provides improved imaging and spectroscopy from nanoparticles in complex environments, such as biological cells.
Abigail E. Smith, Zachary D. Schultz
wiley   +1 more source

Phase‐Retrieved High‐Throughput Multi‐Channel Simultaneous Surface Plasmon Resonance Detection

Laser &Photonics Reviews, EarlyView.
This work presents a new phase‐retrieval high‐throughput multi‐channel simultaneous SPR detection framework. By integrating an objective lens‐based coupling system with a rotation‐based ePIE (r‐ePIE) phase retrieval on the back focal planes, this framework significantly reduces the minimum required detection area to reveal localized information.
Mengqi Shen, Xiaoping Jiang, Shibiao Wei, Michael G. Somekh   +3 more
wiley   +1 more source

High‐Speed, Continuous, Large‐Angle Nonmechanical Beam‐Steering with Liquid Crystal Etalons

Advanced Photonics Research
Liquid crystal (LC) is a strong candidate material for nonmechanical beam‐steering devices, which are highly demanded in self‐driving vehicle applications.
Yo Inoue, Keishiro Saito, Hiroshi Moritake   +2 more
doaj   +1 more source

Lanthanide‐Doped NaGdF4 Nanoparticles as Versatile Luminescent Labels for Cathodoluminescence Mapping

physica status solidi (b), EarlyView.
This study presents a synthesis method for lanthanide‐doped NaGdF4 particles in an aqueous environment. Clearly distinct cathodoluminescence (CL) spectra were observed for europium‐ and thulium‐doped nanoparticles, stable for up to 100 s of excitation time.
Jörgen Jungclaus, Bogdan Semenenko, Florian Meierhofer, Barbara Szafranski, Georg Garnweitner, Tobias Voss   +5 more
wiley   +1 more source

Bandgap Engineering On Demand in GaAsN Nanowires by Post‐Growth Hydrogen Implantation

Small, EarlyView.
The GaAsN bandgap in the GaAs/GaAsN core–shell nanowire shifts to lower energy for increasing N concentrations. By post‐growth H implantation the GaAsN bandgap is moved to a higher GaAs‐like energy through the formation of N–H complexes. By thermal annealing, these complexes can be partially dissolved, allowing to tune the GaAsN bandgap over a range of
Nadine Denis, Akant Sagar Sharma, Elena Blundo, Francesca Santangeli, Paolo De Vincenzi, Riccardo Pallucchi, Mitsuki Yukimune, Alexander Vogel, Ilaria Zardo, Antonio Polimeni, Fumitaro Ishikawa, Marta De Luca   +11 more
wiley   +1 more source