Results 91 to 100 of about 4,907,875 (249)

Scalability and miniaturization of optoelectronic hopfield networks based around micro- and diffractive optical elements

, 2001
It is generally accepted that diffractive optical elements provide the optimal flexibility for the implementation of free-space interconnections between arrays of optoelectronic components.
Mohammad R. Taghizadeh, Taghizadeh, Mohammad R., Waddie, Andrew J., Andrew J. Waddie   +3 more
core   +1 more source

Fabrication of Fresnel plates on optical fibres by FIB milling for optical trapping, manipulation and detection of single cells

Scientific Reports, 2017
The development of economical optical devices with a reduced footprint foreseeing manipulation, sorting and detection of single cells and other micro particles have been encouraged by cellular biology requirements.
Rita S. Rodrigues Ribeiro, Pabitra Dahal, Ariel Guerreiro, Pedro A. S. Jorge, Jaime Viegas   +4 more
doaj   +1 more source

Electrically controllable diffractive optical elements fabricated by direct laser writing on a carbon nanotube network film. [PDF]

Nanophotonics, 2023
Min T, Yim JH, Park S, Ha S, Lee S, Yeom DI.   +5 more
europepmc   +1 more source

Achieving High ON State Current through Ferroelectric Polarization‐Dependent Interfacial Resistance Switching in Undoped Orthorhombic HfO2 Films

Advanced Functional Materials, EarlyView.
Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand, Nuno Estrócio, Ji S. Kim, Babak Bakhit, Marian C. Istrate, Corneliu Ghica, Tiago Rebelo, Nives Strkalj, Abin Varghese, Bernardo Almeida, Luís S. Marques, Bipin Rajendran, Judith L. MacManus‐Driscoll, José P. B. Silva   +13 more
wiley   +1 more source

Numerical Fresnel models of Fresnel zone plates for plane wave at angle of incidence

Scientific Reports
Diffractive optical elements (DOEs) are increasingly used in electro-optical systems due to their design flexibility, which offers advantages over refractive optics.
Ahmet Ünal
doaj   +1 more source

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

Advanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg, Thomas W. Pfeifer, Chuanzhen Zhou, Yong Kyu Choi, Duk‐Hyun Choe, Patrick E. Hopkins, Jon F. Ihlefeld   +6 more
wiley   +1 more source

High-efficiency RGB achromatic liquid crystal diffractive optical elements

Opto-Electronic Advances
Liquid crystal Pacharatnam-Berry phase optical elements (PBOEs) have found promising applications in augmented reality and virtual reality because of their slim formfactor, lightweight, and high optical efficiency. However, chromatic aberration remains a
Yuqiang Ding, Xiaojin Huang, Yongziyan Ma, Yan Li, Shin-Tson Wu   +4 more
doaj   +1 more source

Quantifying Subsurface Weak in‐Plane Magnetization of Mixed Phase BiFeO3 by Scanning Nitrogen Vacancy Magnetometry

Advanced Functional Materials, EarlyView.
We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang, Zhewen Xu, Yuwen Xu, Björn Josteinsson, Simon Josephy, Dawei Zhang, Yunlong Sun, Heung‐Sik Park, Jihun Kim, Kanghyun Chu, Kyung Song, Danyang Wang, Chan‐Ho Yang, Andrea Morales, Jan Seidel   +14 more
wiley   +1 more source

Indoor optical wireless communication system using beam-steering by cascaded diffractive optical elements

, 2014
While the radio spectrum continues to struggle with a soaring bandwidth demand, the optical spectrum promises virtually unlimited license-free bandwidth.
Oh, C.W., García-Blanco, S.M., Tangdiongga, E., Boller, Kl.J., Geuzebroek, D., Koonen, A.M.J., Sefunc, M.A.   +6 more
core  

3D printed diffractive optical elements for rapid prototyping

Micro and Nano Engineering
A rapid and robust method to fabricate transmission diffractive optical elements in the visible wavelengths is presented. By additive manufacturing of a polymeric photo-resin using 2-photon lithography followed by encasing of the structure in another ...
Daniel Fan, Carlas S. Smith, Ranjith R. Unnithan, Sejeong Kim   +3 more
doaj   +1 more source