Results 101 to 110 of about 5,837,988 (197)

Microscopic applications of holographic beam shaping and studies of optically trapped aerosols [PDF]

, 2009
This thesis has two themes. Firstly, it concerns the original application of holographic beam shaping, employed through the methods associated with optical manipulation, to three microscopic fields of research.
Burnham, Daniel R.
core   +2 more sources

Encoding terahertz holographic bits with a computer-generated 3D-printed phase plate

Scientific Reports
A sub-terahertz holographic image of a two-dimensional 576-bit data code is produced using a diffractive phase-plate element. The phase plate was designed using a modified Gerchberg-Saxton iterative algorithm to encode a focused image of the data code ...
E. Constable, J. Gospodaric, A. Pimenov
doaj   +1 more source

A new low-cost, compact, auto-phoropter for refractive assessment in developing countries

Scientific Reports, 2017
Using a phoropter to measure the refractive error is one of the most commonly used methods by ophthalmologists and optometrists. Here, we demonstrate design and fabrication of a portable automatic phoropter with no need for patient’s feedback. The system
Babak Amirsolaimani, Gholam Peyman, Jim Schwiegerling, Arkady Bablumyan, N. Peyghambarian   +4 more
doaj   +1 more source

Misalignment‐Robust Dynamic Cascaded Holography Accelerated by Deep Neural Networks

Laser &Photonics Reviews, EarlyView.
Cascaded holography has mainly been studied using metasurfaces. Here, we demonstrate a fully dynamic cascaded holographic system based on two phase‐only spatial light modulators. A misalignment‐tolerant optimization method preserves image quality despite alignment errors, making cascaded holographic systems simpler, more reliable, and easier to use in ...
Gyeongsu Jin, Seokmin Kim, Seung‐Yeol Lee   +2 more
wiley   +1 more source

The Application of Telemedicine in Surgery

Med Research, EarlyView.
This figure provides an overview of the content presented in this article. Telemedicine is integrated throughout the entire surgical workflow, with distinct applications across the preoperative, intraoperative, and postoperative phases. These applications are enabled by a suite of supporting technologies, while the associated implementation challenges ...
Yufan Yang, Chang Liu, Xue Sun, Yiting Wang, Minghui Zhao, Shuya Jiang, Haoling Zhang, Wangzheqi Zhang, Wenwen Shi   +8 more
wiley   +1 more source

Interference and diffraction analysis of holographic gratings using the Finite-Difference Time-Domain method [PDF]

, 2010
The Finite-Difference Time-Domain method (FDTD) is based on a time-marching algorithm that has proven accurate in predicting microwave scattering from complicated objects.
Pérez Molina, Manuel, Beléndez, Augusto, Neipp, Cristian, Bleda, Sergio, Francés, Jorge   +4 more
core  

Wide-angle multiplexed holographic photovoltaic concentrators recorded in a green photopolymer

Scientific Reports
Photopolymers are among the most promising materials for recording transparent volume multiplexed holographic lenses (MHLs), which constitute key holographic optical elements (HOEs) in diverse photonic and photovoltaic applications.
Tomás Lloret, Manuel G. Ramírez, Belén Nieto-Rodríguez, José Carlos García-Vázquez, Inmaculada Pascual   +4 more
doaj   +1 more source

Vortex Domain Wall Imaging in a 3D Magnetic Nanotube Grown by Focused Electron Beam Induced Deposition

Small, EarlyView.
Synthesis of nanoscale high‐purity Co magnetic nanotubes using a single growth technique, focused electron beam induced deposition (FEBID). Utilizing electron holography and micromagnetic simulations, we demonstrate the nucleation and pinning of tilted vortex domain walls, providing crucial experimental evidence to advance 3D spintronics and ...
Javier Pablo‐Navarro, Luis Alfredo Rodríguez, Christophe Gatel, Ingrid Marie Andersen, Etienne Snoeck, José María De Teresa, César Magén   +6 more
wiley   +1 more source

Detection and Inhalation Hazard Assessment of Wear Particles Arising From Abrasion of Market‐relevant Graphene Reinforced Composites

Small, EarlyView.
Abrasion of few‐layer graphene (FLG)–epoxy composites generated respirable particles in which FLG remained fully embedded, as confirmed by correlative HR‑TEM, Raman, and ToF‑SIMS analyses. Advanced lung cell models revealed no cytotoxic or inflammatory responses, and only high‑dose epoxy particles reduced mucociliary clearance.
Govind Gupta, Jimmy Vernaz, Antje Vennemann, Maike Stange, Asmus Meyer‐Plath, Servane Contal, Sarah Zehnder, Ziting Wang, Aline Chary, Stephanie Eitner, Philipp Mueller, Vera M. Kissling, Samuel Constant, Lucie Chupin, Daniel Breitenstein, Birgit Hagenhoff, Tommaso Serchi, Bernadett Boda, Martin Wiemann, Peter Wick, Tina Buerki‐Thurnherr   +20 more
wiley   +1 more source

Improving ARTs: Microfluidics as a Tool for Sperm Selection

Andrology, EarlyView.
ABSTRACT Sperm selection is a critical step in assisted reproductive technology (ART), as sperm quality directly influences embryo quality. In vivo, the female reproductive tract imposes several physical and physiological barriers that favors only the most optimal spermatozoa reaching the fertilization site.
A. Pérez‐Gómez, A. Urriés, J. L. de Pablo, L. Serrano‐Ramón, S. Sanchez, R. Herrer, J. M. Morrell, C. Malo   +7 more
wiley   +1 more source