Results 101 to 110 of about 30,505 (307)

Advances in Optical Techniques for Tumor Detection

Advanced Optical Materials, EarlyView.
Cancer detection is vital for patient survival. Optical technologies overcome conventional cytology's limitations with high sensitivity and molecular specificity. This review highlights five techniques: Raman spectroscopy, fluorescence sensors, fiber optic sensors, photoacoustic imaging, and colorimetric detection for tumor diagnosis via direct ...
Yang Yu, Anqi Yang, Jiaqi Liao, Julian Evans, Ruili Zhang, Shuang E, Sailing He   +6 more
wiley   +1 more source

Wrinkle‐Template Confinement of Kinetically Arrested Cellulose Nanocrystals for Sustainable Large Scale Reflection Gratings

Advanced Optical Materials, EarlyView.
Self‐supported all‐cellulose reflective gratings are fabricated from cellulose nanocrystal dispersions via a confinement printing process. Taking advantage of the reduced fluidity of concentrated, kinetically arrested cellulose nanocrystal dispersions, line arrays can be successfully transferred to dried CNC films.
Yue Dong, Swagato Sarkar, Andreas Fery, Christian Rossner   +3 more
wiley   +1 more source

Directionally Asymmetric Holographic Imaging for Arbitrary Polarization States Using Janus Metasurfaces

Advanced Optical Materials, EarlyView.
We demonstrate single‐layer titanium dioxide Janus metasurface holograms that achieve directionally asymmetric imaging under forward and backward illumination. By integrating the Dammann grating principle with precise phase control, our design produces high‐fidelity holographic images for arbitrary polarization states at 532 nm, simplifying fabrication,
Yu‐Chuan Chang, Chang‐Yi Lin, Huan‐Teng Su, Yun‐Chien Wu, Chih‐Yao Hsu, Shu‐Ming Chang, Yao‐Wei Huang   +6 more
wiley   +1 more source

Advanced Emissivity Tuning Via Femtosecond Laser Surface Engineering

Advanced Optical Materials, EarlyView.
Femtosecond laser surface processing (FLSP) is employed to fabricate titanium‐based metamaterials with engineered micro/nano‐scale features that exhibit spectrally selective and omnidirectional thermal emissivity. By integrating advanced ellipsometry, electromagnetic modeling, and compositional analysis, the work reveals resonance‐driven emissivity ...
Zahra Kamali Khanghah, Andrew Butler, Andrew Reicks, Juveriya Parmar, Eva Schubert, Craig Zuhlke, Mathias Schubert, Ufuk Kilic, Mohammad Ghashami   +8 more
wiley   +1 more source

Flat Optics for Polarization Structure Engineering from 2D to 3D

Advanced Optical Materials, EarlyView.
Metasurfaces have transformed polarization control by enabling precise engineering of complex polarization structures. This review explores their evolution from generating 2D polarization structures to shaping fully 3D polarization fields. By unlocking the unprecedented control over the polarization and spectral information of light, these advances ...
Buxiong Qi, Yan Li, Xianzhong Chen
wiley   +1 more source

Complex Structured Light Generation Using Printed Liquid Crystal Droplets

Advanced Optical Materials, EarlyView.
Inkjet‐printed liquid crystal droplets generate structured light beams with spatially varying polarization and phase. These include full Poincaré beam, vortex beam carrying orbital angular momentum, and beam with polarization singularities, offering a simple approach for compact structured light generation in optical manipulation, imaging, and ...
Xuke Qiu, Runchen Zhang, Yifei Ma, Zimo Zhao, Zipei Song, Alva C. J. Orr, Mengmeng Li, Waqas Kamal, Jinge Guo, Alfonso A. Castrejón‐pita, Steve J. Elston, Stephen M. Morris, Chao He   +12 more
wiley   +1 more source

THE CHANGING PATTERN OF BIREFRINGENCE IN PLASMODIA OF THE SLIME MOLD, PHYSARUM POLYCEPHALUM [PDF]

, 1965
H. Nakajima, Robert D. Allen
openalex   +1 more source

Phase Topology Stability of an Optical Vortex via an Electrically Controlled Twist‐Planar Oriented Liquid Crystal Fresnel Lens

Advanced Optical Materials, EarlyView.
A simple and efficient method for determining the stability of optical vortices via Fourier transform using a conventional spherical lens is presented. The theoretical and experimental results demonstrate a practical approach to directly and unambiguously measure the magnitude and sign of the topological charge of a beam without altering an ...
Elena Melnikova, Katsiaryna Pantsialeyeva, Dmitry Gorbach, Alexei Tolstik, Sergei Slussarenko Jr., Alina Karabchevsky   +5 more
wiley   +1 more source

Polymer Relaxation Times from Birefringence Relaxation Measurements [PDF]

, 1967
Douglas S. Thompson, Stanley J. Gill
openalex   +1 more source

Cloaking and Antennas: From Theoretical Paradigms to Next‐Generation Intelligent Systems

Advanced Optical Materials, EarlyView.
The inception of electromagnetic cloaking sparked an immediate question: Can antennas be made invisible? Two decades later, this review charts the intertwined progress of major cloaking strategies (from transformation optics to scattering cancellation), metasurface technology, and their application to antennas, revealing how AI‐enabled devices are ...
Helen Guo, Xun Li
wiley   +1 more source