Results 81 to 90 of about 11,072 (199)

Color‐Pure Organic Luminophores: Characteristics, Definitions, Physical Basis and Fundamental Design Principles

Angewandte Chemie, Volume 138, Issue 30, 20 July 2026.
Color‐pure all‐organic emitters, i.e., with narrow spectral characteristics, are intensively studied for high‐definition organic LEDs and multi‐color bioimaging. In order to guide targeted materials design, this educative review discusses spectral characteristics, proper definitions and units, and the physical basis of spectral broadening, to distill ...
Johannes Gierschner, Sunwu Song, Siyang Feng, Liangxuan Wang, Miguel Ródenas, Begoña Milián‐Medina, Min Sang Kwon   +6 more
wiley   +2 more sources

Highly Efficient Broadband Achromatic Microlens Design Based on Low-Dispersion Materials

Engineering
Metalenses with achromatic performance offer a new opportunity for high-quality imaging with an ultra-compact configuration; however, they suffer from complex fabrication processes and low focusing efficiency.
Xueqian Wang, Chuanbao Liu, Feilou Wang, Weijia Luo, Chengdong Tao, Yuxuan Hou, Lijie Qiao, Ji Zhou, Jingbo Sun, Yang Bai   +9 more
doaj   +1 more source

Full‐Stokes Polarimetry Metasurface‐Enabled Single‐Shot Measurement of the Spin Hall Effect of Light

Advanced Optical Materials, Volume 14, Issue 30, 14 August 2026.
This study presents a metasurface‐enabled approach to measure the spin Hall effect of light in a single‐shot. The metasurface splits a reflected light into six polarization‐dependent focal spots, allowing all Stokes parameters to be obtained from single image.
Jeonghoon Choi, Jaekyung Kim, Sujeong Park, Doyoon Lee, Juhoon Baek, Junsuk Rho, Minkyung Kim   +6 more
wiley   +1 more source

Observation of Excitonic Instability in a Monolayer Ta2NiSe5 With Strain Disorder

Advanced Science, Volume 13, Issue 43, 3 August 2026.
Monolayer Ta2${\rm Ta}_2$NiSe5${\rm NiSe}_5$ sustains an excitonic insulating phase up to 190 K, with Raman signatures of gap opening and critical excitonic fluctuations. Thickness‐independent large gap ratios highlight strong exciton‐phonon coupling, while substrate‐induced strain disorder depresses Tc, establishing monolayer Ta2${\rm Ta}_2$NiSe5${\rm
So Young Kim, Kwangrae Kim, Dowook Kim, Ji Eun Lee, Jieun Seok, Chang Il Kwon, Jo Hyun Yun, Chang‐Jong Kang, Jae Hoon Kim, H. W. Yeom, Tae‐Hwan Kim, Jonghwan Kim, B. J. Kim, Jun Sung Kim   +13 more
wiley   +1 more source

TRIM: Simultaneous Thermometry, Ranging, and Imaging via a Monolithic Metalens

Advanced Science, Volume 13, Issue 46, 17 August 2026.
ABSTRACT While metasurfaces offer a pathway beyond the discrete architectures of conventional LWIR systems, physically fusing high‐precision thermometry and passive ranging onto a single metalens remains a formidable challenge. Here, we demonstrate a monolithic, dual‐focus metalens capable of simultaneous multidimensional sensing.
Man Yuan, Yuqing Zhang, Wangzhe Zhou, Zhaojian Zhang, Xiaoyun He, Xinpeng Jiang, Yiyi Li, Xin He, Jiagui Wu, Yuanmu Yang, Junbo Yang   +10 more
wiley   +1 more source

Centimeter-size achromatic metalens in long-wave infrared

Nanophotonics
Metalens has shown its significantly ultra-light and ultra-thin features. However, large-aperture achromatic metalens is constrained by both maximum dispersion range and computational memory.
Zhao Fen, Zhao Changchun, Zhang Yuqing, Chen Jie, Li Shaoqi, Zhou Wangzhe, Ran Chongchong, Zeng Yongcan, Chen Huan, He Xin, Wu Jiagui, Zhu Gangyi, Yang Junbo   +12 more
doaj   +1 more source

Automatic search for cemented doublets using the saddle point construction method

Journal of the European Optical Society-Rapid Publications
Conventional optical design relies on iterative and time-consuming optimization methods. Finding the right starting system facilitates the design of relevant optical systems.
Maurey Hugo, Twardowski Patrice, Pierron Robin, Gérard Philippe, Flury Manuel   +4 more
doaj   +1 more source

Supercritical Angle Fluorescence and Raman Techniques in Biophotonics

Laser &Photonics Reviews, Volume 20, Issue 15, 7 August 2026.
Supercritical angle fluorescence (SAF) microscopy and supercritical angle Raman (SAR) spectroscopy have emerged as powerful tools in the field of biophotonics, enabling high‐resolution imaging and spectroscopy of biological specimens near interfaces. This review article provides a comprehensive overview of the principles, techniques, applications, and ...
Subir Das, Nathalia Simea Münch, Stefan Seeger   +2 more
wiley   +1 more source

Laser‐Based In Situ Diagnostics of Temperature and Material‐Growth Dynamics in Photothermal Laser Nanoprinting of ZnO

Laser &Photonics Reviews, Volume 20, Issue 15, 7 August 2026.
This work elucidates the previously unknown thermal dynamics during sub‐micrometer photothermal laser printing of zinc oxide using a non‐invasive transmission‐based in situ measurement. The elevated temperatures are shown to be highly localized around the laser focal spot, reaching average temperature increases of about 113 K per mW of laser power ...
Steven Kraus, Kristian Kraft, Yolita M. Eggeler, Martin Wegener, Paul Somers   +4 more
wiley   +1 more source

A neutron microscope using a nested Wolter‐I condenser and a bank of diffractive–refractive achromatic objectives

Journal of Applied Crystallography, Volume 59, Issue 4, Page 1282-1293, August 2026.
A neutron microscope is presented comprising a Wolter‐I nested mirror optic as condenser and a 2D array of neutron achromats as objective.We present a nested Wolter‐I mirror design for a neutron condenser, which is based on established X‐ray telescope technology.
H. F. Poulsen, C. L. Andersen, N. Ravinet, J. Vila-Comamala, M. R. D. Veeraraj, E. B. Knudsen, P. K. Willendrup, S. Massahi, F. E. Christensen, D. D. M. Ferreira, M. Strobl, C. David, L. Theil Kuhn   +12 more
wiley   +1 more source