Results 181 to 190 of about 2,286,747 (296)

Low‐Threshold Red Lasing in Diketopyrrolopyrrole‐Based Organic Semiconductor Films

Angewandte Chemie International Edition, EarlyView.
Low‐threshold organic semiconductor lasers (OSLs) in the red region are achieved using diketopyrrolopyrrole (DPP) derivatives (DPA‐DPPMe and HMAT‐d‐DPP). Molecular design enables precise control of radiative‐decay and molecular orientation, suppressing optical losses and enhancing gain.
Youhei Chitose, Ryota Zenke, Takuma Saeki, Hsin‐Yi Wei, Rahul Murali, Shota Fukuma, Yusei Kaya, Gomathi Vinayakam Mageswari, Sai Santosh Kumar Raavi, Ja‐Hon Lin, Tzu‐Chau Lin, Chihaya Adachi   +11 more
wiley   +1 more source

Improved S-bend optical waveguide loss formula verified by experiments. [PDF]

Sci Rep
Syahriar A.
europepmc   +1 more source

Development and In-Depth Characterization of Bacteria Repellent and Bacteria Adhesive Antibody-Coated Surfaces Using Optical Waveguide Biosensing. [PDF]

Biosensors (Basel), 2022
Farkas E, Tarr R, Gerecsei T, Saftics A, Kovács KD, Stercz B, Domokos J, Peter B, Kurunczi S, Szekacs I, Bonyár A, Bányai A, Fürjes P, Ruszkai-Szaniszló S, Varga M, Szabó B, Ostorházi E, Szabó D, Horvath R.   +18 more
europepmc   +1 more source

Study and Characterization of Silicon Nitride Optical Waveguide Coupling with a Quartz Tuning Fork for the Development of Integrated Sensing Platforms. [PDF]

Sensors (Basel)
Melchiorre L, Thottoli A, Vorobev AS, Menduni G, Sampaolo A, Magno G, O'Faolain L, Spagnolo V.   +7 more
europepmc   +1 more source

Metallic Effects on p-Hydroxyphenyl Porphyrin Thin-Film-Based Planar Optical Waveguide Gas Sensor: Experimental and Computational Studies. [PDF]

Nanomaterials (Basel), 2022
Kari N, Zannotti M, Giovannetti R, Řeha D, Minofar B, Abliz S, Yimit A.   +6 more
europepmc   +1 more source

On the Impact of Mechanical Constraint on Band Structure and Photo‐Elastic Effect in Photonic Resonators

Advanced Physics Research, EarlyView.
We computationally investigate the mechanical, electronic, and optical properties of strained GeSn microdisks on silicon substrates. By combining photo‐elasticity, strain‐dependent band‐structure calculations, and optical mode analysis, we study how strain distribution, structural configuration, and temperature affect the electronic band structure and ...
Jon Schlipf, Ignatii Zaitsev, Inga Anita Fischer, Davide Spirito, Bernd Witzigmann, Costanza Lucia Manganelli   +5 more
wiley   +1 more source

Integrated Optical Waveguide Electric Field Sensors Based on Bismuth Germanate. [PDF]

Sensors (Basel)
Wang J, Song Y, Song X, Zhang W, Yang J, Xuan Z.   +5 more
europepmc   +1 more source

Strain‐Tunable Photoluminescence From Ge Quantum Dots on Si Nanotips for CMOS‐Compatible Photonics

Advanced Physics Research, EarlyView.
This work studies strain in Ge quantum dots grown on Si nanotips using photoluminescence, X‐ray diffraction, and band structure calculations. It shows how emission changes with dot size, evaluates strain in the dot and substrate, and explains the role of direct and indirect transitions in the optical behavior.
Diana Ryzhak, Johannes Aberl, Enrique Prado‐Navarrete, Lada Vukušić, Oliver Skibitzki, Petr Klenovský, Marvin Hartwig Zoellner, Markus Andreas Schubert, Moritz Brehm, Davide Spirito, Giovanni Capellini   +10 more
wiley   +1 more source

Silica-Polymer Heterogeneous Hybrid Integrated Mach-Zehnder Interferometer Optical Waveguide Temperature Sensor. [PDF]

Polymers (Basel)
Gao Z, Du Y, Zhang Q, Qin Y, Fang J, Yi Y.   +5 more
europepmc   +1 more source

Compositionally Engineered Carboxymethyl Cellulose‐Based Optical Fibers With Exceptionally Low Optical Loss and Quantitative Humidity Sensing

Advanced Physics Research, EarlyView.
Carboxymethyl cellulose‐based biopolymer optical fibers are fabricated using aqueous wet spinning. The fibers exhibit record‐low optical attenuation in polysaccharide‐based waveguides while maintaining efficient transmission across the visible‐to‐near‐infrared region of the electromagnetic spectrum.
Jani Patrakka, Alizee Sanouillet, Ville Hynninen, Nonappa   +3 more
wiley   +1 more source