Results 221 to 230 of about 15,815 (311)

Spacer‐Less Substrate‐Integrated Metasurface for Near‐Unity Terahertz Absorption

Advanced Optical Materials, EarlyView.
ABSTRACT Although conventional metal‐insulator‐metal (MIM) terahertz (THz) absorbers can provide near‐unity absorption, their multilayer stacks inevitably introduce additional thickness, mass, and residual stress, which limit their compatibility with THz thermal sensing platforms.
Zihao Zhao, Kazuho Harada, Qian Liu, Isao Morohashi, Xu Fang, Kazuhiko Hirakawa, Ya Zhang   +6 more
wiley   +1 more source

Thermo‐Derived Cholesteric Liquid Crystal Elastomer Pattern with Composite Structural Colors

Advanced Optical Materials, EarlyView.
A thermochromic cholesteric liquid crystal (CLC) oligomer was synthesized for the preparation of CLC elastomer (CLCE) films with dual reflection bands. Subsequently, a CLCE pattern with composite structural colors was prepared, which was suitably applied for decoration and anti‐counterfeiting.
Li Zhong, Yi Li, Wei Liu, Yonggang Yang
wiley   +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

ZenBand: a numerical solver of photonic crystals with a graphical user interface. [PDF]

Sci Rep
Zinkevičius A, Lukošiūnas I, Gailevičius D.   +2 more
europepmc   +1 more source

Exploring the Synergy of Combining BINAP and tCzBN Motifs Within Multi‐Resonant TADF Emitters to Enhance OLED Performance

Advanced Optical Materials, EarlyView.
This work presents two MR‐TADF emitters, BINAP‐BN1 and BINAP‐BN2, based on a BINAP core and differing numbers of tCzBN units. Both emitters show similar solution photophysics, but distinct behavior in doped films, where BINAP‐BN1 exhibits higher photoluminescence quantum yield and suppressed aggregation‐induced emission broadening compared to BINAP‐BN2.
John Marques dos Santos, Debasish Barman, Rangani Wathsala Weerasinghe, Tomas Matulaitis, David B. Cordes, Aidan P. McKay, Youichi Tsuchiya, Chihaya Adachi, Eli Zysman‐Colman   +8 more
wiley   +1 more source

Observation of wave amplification and temporal topological state in a non-synthetic photonic time crystal. [PDF]

Nat Commun
Xiong J, Zhang X, Duan L, Wang J, Long Y, Hou H, Yu L, Zou L, Zhang B.   +8 more
europepmc   +1 more source

Mitigating Efficiency Roll‐Off in Phosphor‐Sensitized Fluorescence OLEDs via Molecular Polarity‐Based Benzofuropyridine Host Engineering

Advanced Optical Materials, EarlyView.
Positional isomerism in dibenzofuran‐based n‐type hosts modulates molecular polarity, charge‐transport balance, and emissive‐layer packing. The higher‐polarity BFPDB‐2 host facilitates efficient energy funneling, reduced aggregation, and preferential dipole orientation, leading to phosphor‐sensitized fluorescence OLEDs with enhanced external quantum ...
Nargis Ali, Xuyao Song, Yun‐Hi Kim, Min Chul Suh   +3 more
wiley   +1 more source

Twist-induced orbital chirality in a photonic laser. [PDF]

Nat Commun
Frizyuk K, De Angelis C.
europepmc   +1 more source

Direct Measurement of the Singlet Lifetime and Photoexcitation Behavior of the Boron Vacancy Center in Hexagonal Boron Nitride

Advanced Optical Materials, EarlyView.
Negatively charged boron vacancy defects in hexagonal boron nitride promise near‐surface quantum sensing, but their internal spin transition rates are only partly understood. This work directly measures the defect's singlet‐state lifetime, 15(3) ns, using a nanosecond rise‐time dual‐pulse photoluminescence‐recovery method, and shows that high laser ...
Richard A. Escalante, Andrew J. Beling, Daniel G. Ang, Niko R. Reed, Justin J. Welter, John W. Blanchard, Cecilia Campos, Edwin Coronel, Klaus Krambrock, Alexandre S. Leal, Paras N. Prasad, Ronald L. Walsworth   +11 more
wiley   +1 more source

Integrated structural, optical and dielectric analysis of low-loss α-Al₂O₃ nanoparticles for UV photonic and dielectric applications. [PDF]

Sci Rep
Mohamed SA, Rayan AM, Hakeem AMA, Mohamed SH, El-Rahman AMA, Gad KAE, Ahmed MR, AbdelAll N.   +7 more
europepmc   +1 more source