Results 201 to 210 of about 74,798 (256)

Superconducting nanowire single-photon detectors for enhanced biomedical imaging. [PDF]

J Biomed Opt
Hughes ECV, Upadhya A, Dholakia K.
europepmc   +1 more source

On‐Chip Saturated Absorption of CO2 in a Silicon‐on‐Sapphire Waveguide

Advanced Optical Materials, EarlyView.
We demonstrate the first saturated absorption of a molecular gas on a planar photonic chip. By coupling carbon dioxide with the tightly confined light of a silicon‐on‐sapphire waveguide, we achieve optical saturation using only milliwatt powers. This breakthrough provides a practical, low‐power foundation for creating ultra‐compact mid‐infrared ...
Shahar Edelstein, Noa Mazurski, Uriel Levy   +2 more
wiley   +1 more source

Fast-Recovery Epitaxial NbN Superconducting Nanowire Single-Photon Detectors with Saturated Efficiency at 1550 nm in Liquid Helium. [PDF]

Nano Lett
Incalza F, Castellani M, Joti Paul D, Simon A, Batson E, Mondin D, Medeiros O, Berggren KK.   +7 more
europepmc   +1 more source

Revealing the Transmission Hologram's Refractive Index Profile Stored in a Photohydrogel: A Structural Characterization

Advanced Optical Materials, EarlyView.
A theoretical model is developed to visualize three‐dimensional refractive index profiles in transmission holographic gratings. In this work, it is applied to photopolymerizable hydrogels, enabling detailed analysis of the internal structure of recorded holograms and their evolution under different degradation conditions.
Belén Nieto‐Rodríguez, Manuel G. Ramírez, José Carlos García‐Vázquez, Tomás Lloret, Inmaculada Pascual   +4 more
wiley   +1 more source

Light sources and detectors: applications in nanoscale imaging, sensing, and actuation. [PDF]

J Biomed Opt
Wachsmann-Hogiu S, Focşan M, Fixler D.
europepmc   +1 more source

Naphthyridine‐Based Donor–Acceptor Boron Difluoride Complexes Targeting Red Emission in Organic Light‐Emitting Diodes

Advanced Optical Materials, EarlyView.
Four donor–acceptor boron difluoride complexes based on triphenylamine donor and a naphthyridine acceptor units were synthesized, studied, and applied as OLED emitters. They exhibit pronounced intramolecular charge transfer character, balanced charge transport properties, and tunable emission. Near‐unity PLQYs are achieved for selected compounds, while
Omar Lahna, Stepan Kutsiy, Dmytro Volyniuk, Roman Luboradzki, Elina Andresen, Ute Resch‐Genger, Juozas V. Grazulevicius, Pavlo Stakhira, Mykhaylo A. Potopnyk   +8 more
wiley   +1 more source

Design of a photonic bolometric sensor using microring resonators for high-energy radiation detection. [PDF]

Sci Rep
Maleki M, Brunetti G, Ciminelli C.
europepmc   +1 more source

Bridging Boltzmann and Non‐Boltzmann Optical Thermometry Enabled by Multimodal Perovskite Nanocrystals

Advanced Optical Materials, EarlyView.
Multimodal perovskite nanocrystals enable optical thermometry across multiple excitation and emission regimes, spanning the UV–Vis–NIR spectral range. By combining upconversion, downshifting, and persistent luminescence, the platform bridges conventional Boltzmann and non‐Boltzmann thermometric approaches.
Adrian Drozdowski, Kevin Soler‐Carracedo, Tomasz Grzyb   +2 more
wiley   +1 more source

Chip-Scale Aligned Chiral Carbon Nanotubes Exhibiting Giant Second Harmonic Generation. [PDF]

ACS Nano
Xu R, Doumani J, Labuntsov V, Hong N, Samaha AC, Tu W, Tay F, Blackert E, Luo J, El Tahchi M, Gao W, Lou J, Yomogida Y, Yanagi K, Saito R, Perebeinos V, Baydin A, Kono J, Zhu H.   +18 more
europepmc   +1 more source

Harnessing Ultrafast Optical Pulses for 3D Microfabrication by Selective Tweezing and Immobilization of Colloidal Particles in an Integrated System

Advanced Photonics Research, Volume 6, Issue 5, May 2025.
Microfabrication using nano‐ to micron‐sized blocks has transformative potential for next‐gen electronics, optoelectronics, and materials. Traditional methods are limited by scalability and precision. STIC, a single‐laser system for precise colloid manipulation and immobilization using femtosecond lasers, is introduced that enables efficient 3D ...
Krishangi Krishna, Jieliyue Sun, Wenyu Liu, Robert H. Hurt, Kimani C. Toussaint Jr.   +4 more
wiley   +1 more source