Results 121 to 130 of about 93,717 (313)

Advanced Contactless Bioassembly Approaches: Leveraging Sound, Optical, and Magnetic Fields

Advanced NanoBiomed Research, EarlyView.
This review explores innovative contactless bioassembly techniques driven by sound, light, and magnetic fields, which enable the precise organization of cells, biomaterials, and bioactive substances into complex 3D structures. These technologies, crucial for in vitro modeling and regenerative medicine, are examined in detail, highlighting their ...
Micaela Natta, Greta Cocchi, Riccardo Tognato, Alessandro Cianciosi, Tiziano Serra   +4 more
wiley   +1 more source

Meta Shack–Hartmann wavefront sensor with large sampling density and large angular field of view: phase imaging of complex objects

Light: Science & Applications
Shack–Hartmann wavefront sensors measure the local slopes of an incoming wavefront based on the displacement of focal spots created by a lenslet array, serving as key components for adaptive optics for astronomical and biomedical imaging.
Gi-Hyun Go, Dong-gu Lee, Jaeyeon Oh, Gookho Song, Doeon Lee, Mooseok Jang   +5 more
doaj   +1 more source

Polarization dOTF: on-sky focal plane wavefront sensing

, 2016
The differential Optical Transfer Function (dOTF) is a focal plane wavefront sensing method that uses a diversity in the pupil plane to generate two different focal plane images.
Brooks, Keira J., Catala, Laure, Codona, Johanan L., Crawford, Steven M., Kenworthy, Matthew A.   +4 more
core   +1 more source

Free‐space Optical Computing Systems

Annalen der Physik, EarlyView.
Manipulation and propagation of optical wavefronts in free space enables new intelligent computing hardware. Two types of optical computing systems, matrix and vector multiplication systems and diffractive optical neural network systems, are reviewed from material, device, and system aspects.
Ruiyang Chen, Weilu Gao
wiley   +1 more source

Design considerations for wavefront sensing with self-referencing interferometers in adaptive optics systems

Journal of the European Optical Society-Rapid Publications
In this work, we show the design and implementation of wavefront sensing with a self-referencing interferometer (SRI). The SRI is developed to aid adaptive optics (AO) control, via deformable mirrors, in correcting wavefront error from atmospheric ...
MacGillivray Alexander C., Hristovski Ilija R., Jenne Matthias F., Reeves Andrew P., Mata Calvo Ramon, Holzman Jonathan F.   +5 more
doaj   +1 more source

Joint Compressed Sensing and Manipulation of Wireless Emissions with Intelligent Surfaces

, 2019
Programmable, intelligent surfaces can manipulate electromagnetic waves impinging upon them, producing arbitrarily shaped reflection, refraction and diffraction, to the benefit of wireless users. Moreover, in their recent form of HyperSurfaces, they have
Akyildiz, Ian, Ioannidis, Sotiris, Kafesaki, Maria, Kantartzis, Nikolaos, Liaskos, Christos, Pirialakos, George, Pitilakis, Alexandros, Pitsillides, Andreas, Tasolamprou, Anna, Tsilipakos, Odysseas, Tsioliaridou, Ageliki   +10 more
core   +1 more source

Singular Electromagnetics: From Phase Singularities to Optical Skyrmions and Beyond

Advanced Physics Research, EarlyView.
Singular electromagnetics/optics studies multidimensional topological defects of electromagnetic fields (also known as optical singularities), including phase and polarization singularities, 3D singularities (e.g., optical skyrmions, merons, hopfions, knots, links, and Möbius strips), and even higher‐dimensional singularities.
Jie Yang, Juanna Jiang, Jiafu Wang, Xuezhi Zheng   +3 more
wiley   +1 more source

Ophthalmic imaging in diabetic retinopathy: A review

Clinical &Experimental Ophthalmology, Volume 50, Issue 9, Page 1082-1096, December 2022., 2022
Abstract Retinal imaging has been a key tool in the diagnosis, evaluation, management and documentation of diabetic retinopathy (DR) and diabetic macular oedema (DMO) for many decades. Imaging technologies have rapidly evolved over the last few decades, yielding images with higher resolution and contrast with less time, effort and invasiveness.
Onnisa Nanegrungsunk, Direk Patikulsila, Srinivas R. Sadda   +2 more
wiley   +1 more source

Graphics processing unit (GPU) aided wavefront-based autofocusing in microscopy

AIP Advances, 2018
Based on the wavefront sensing and propagation, the wavefront-based autofocus approach is proposed for potentially adopted in rapid autofocusing since it can precisely locate the focal plane but only requiring much fewer multi-focal image captures ...
Zhilong Jiang, Yan Kong, Fei Liu, Cheng Liu, Shouyu Wang   +4 more
doaj   +1 more source

Stimuli‐Configuring Anisotropic Soft Architectures towards Dynamic Manipulable Photonics

Advanced Physics Research, EarlyView.
This review covers stimuli‐responsive liquid crystal micro/nano‐structures, focusing on their properties, advancements, and applications in photonics. It discusses electric, light, temperature, and mechanical stimuli, highlighting innovative applications in optics, sensing, information processing and so on so forth, emphasizing liquid crystal ...
Xiaoqian Wang, Zhi‐Gang Zheng
wiley   +1 more source