Results 51 to 60 of about 219,223 (311)

Optogenetic Stimulation of Human Neural Networks Using Fast Ferroelectric Spatial Light Modulator—Based Holographic Illumination

Applied Sciences, 2018
The generation and application of human stem-cell-derived functional neural circuits promises novel insights into neurodegenerative diseases. These networks are often studied using stem-cell derived random neural networks in vitro, with electrical ...
Felix Schmieder, Simon D. Klapper, Nektarios Koukourakis, Volker Busskamp, Jürgen W. Czarske   +4 more
doaj   +1 more source

Angle Multiplexing Optical Image Encryption in the Fresnel Transform Domain Using Phase-Only Computer-Generated Hologram

Photonics, 2019
We propose an angle multiplexing method for optics-based image encryption using a phase-only computer-generated hologram (POCGH) in the tilted Fresnel transform (TFrT) domain.
Hsuan T. Chang, Yao-Ting Wang, Chien-Yu Chen   +2 more
semanticscholar   +1 more source

Approximated Wavefront Composition for Computer-Generated Holograms Based on Tiny Logic Operations

IEEE Access, 2023
Accelerating the calculation of computer-generated holograms (CGHs) is an urgent requirement for realizing practical electro-holography for three-dimensional (3D) displays.
Takashi Nishitsuji, Tomoyoshi Shimobaba, Atsushi Shiraki, Tomoyoshi Ito   +3 more
doaj   +1 more source

Displaying real 3-D object images using a computer-generated hologram : a thesis presented in partial fulfillment of the requirements for the degree of Master of Science in Computer Science at Massey University [PDF]

, 1998
The magic of an optical hologram that produced by optical system offer us a never ending sense of wonderment. The images reconstructed from an optical hologram exhibit all of the three dimensional properties with full, rich perspective effects, enabling ...
Yuan, Jingzhou
core  

Positive‐Tone Nanolithography of Antimony Trisulfide with Femtosecond Laser Wet‐Etching

Advanced Functional Materials, EarlyView.
A butyldithiocarbamic acid (BDCA) etchant is used to fabricate various micro‐ and nanoscale structures on amorphous antimony trisulfide (a‐Sb2S3) thin film via femtosecond laser etching. Numerical analysis and experimental results elucidate the patterning mechanism on gold (reflective) and quartz (transmissive) substrates.
Abhrodeep Dey, Uwe Hübner, Albane Benardais, Xiaofei Wu, Andrea Dellith, Jan Dellith, Torsten Wieduwilt, Henrik Schneidewind, Markus A Schmidt, Virginie Nazabal, Volker Deckert, Jer‐Shing Huang, Wei Wang   +12 more
wiley   +1 more source

Space–Bandwidth Product Extension for Holographic Displays Through Cascaded Wavefront Modulation

Applied Sciences
The immersive experience of holographic displays is fundamentally limited by their space–bandwidth product (SBP), which imposes an inherent trade-off between the field of view (FOV) and eyebox size.
Shenao Zhang, Wenjia Li, Bo Dai, Qi Wang, Songlin Zhuang, Dawei Zhang, Chenliang Chang   +6 more
doaj   +1 more source

Three-Dimensional (3D) Printing Implemented by Computer-Generated Holograms for Generation of 3D Layered Images in Optical Near Field

Photonics, 2021
Photocurable three-dimensional (3D) printing is a stepwise layer-by-layer fabrication process widely used in the manufacture of highly specialized objects.
Chung-Fei Lee, Wei-Feng Hsu, Tzu-Hsuan Yang, Ren-Jei Chung   +3 more
doaj   +1 more source

Reducing the memory usage of computer-generated hologram calculation using accurate high-compressed look-up-table method in color 3D holographic display.

Optics Express, 2019
In this paper, we propose an accurate high-compressed look-up-table method that uses less memory to generate the hologram. In precomputation, we separate the longitudinal modulation factors and only calculate the basic horizontal and vertical factors ...
Dapu Pi, Juan Liu, Ruidan Kang, Zhiqi Zhang, Yu Han   +4 more
semanticscholar   +1 more source

Complex Cryptographic and User‐Centric Physically Unclonable Functions Enabled by Strain‐Sensitive Nanocrystals via Selective Ligand Exchange

Advanced Functional Materials, EarlyView.
This study investigates electromechanical PUFs that improve on traditional electric PUFs. The electron transport materials are coated randomly through selective ligand exchange. It produces multiple keys and a key with motion dependent on percolation and strain, and approaches almost ideal inter‐ and intra‐hamming distances.
Seungshin Lim, Hanseok Seo, Taesung Park, Byung Ku Jung, Junhyeok Park, Young Kyun Choi, Dae Yang Oh, Soong Ju Oh   +7 more
wiley   +1 more source

Real-time terahertz meta-cryptography using polarization-multiplexed graphene-based computer-generated holograms

Nanophotonics, 2020
As one of the cutting-edge technologies in advanced information science, wave-based cryptography is a prerequisite to enable a plethora of secure encrypting platforms which can be realized by smart multiplexing techniques together with suitable ...
Rajabalipanah Hamid, Rouhi Kasra, Abdolali Ali, Iqbal Shahid, Zhang Lei, Liu Shuo   +5 more
doaj   +1 more source