Results 21 to 30 of about 6,247 (204)

Photonic Neural Networks with Kramers–Kronig Activation

open access: yesAdvanced Photonics Research, Volume 4, Issue 9, September 2023., 2023
Kramers–Kronig relationship is a universal property of nature and optically links the imaginary and real part of the refractive index. This work is employed to produce nonlinear activation, namely Kramers–Kronig activation (KKA), which is critical for the neural networks but challenging to be optically implemented.
Ye Tian   +5 more
wiley   +1 more source

Self‐Aligned Polymer Film Patterning on Microstructured Silicon Surfaces

open access: yesMacromolecular Chemistry and Physics, Volume 223, Issue 23, December 2022., 2022
A selective deposition of polymers by dewetting and grafting‐from approach is presented, making use of material surface contrast generated through a selective etching process for silicon samples with buried p‐implants, which allowed to self‐align the polymer coverage selectively above (grafting from) or next to (dewetting) the buried p‐implants of the ...
Christopher Schutzeichel   +3 more
wiley   +1 more source

Model of simulation of the process of formation of functional surfaces of micro-opto-electro-mechanical systems’ components

open access: yesСистеми озброєння і військова техніка, 2020
The subject of the article is to establish the relationships between the parameters of formation the functional surfaces of the substrates of micro-opto-electro-mechanical systems’ (MOEMS) components and their physical and technological parameters ...
І.Ш. Невлюдов   +3 more
doaj   +1 more source

Resonant‐Opto‐Thermomechanical Oscillator (ROTMO): A Low‐Power, Large Displacement, High‐Frequency Optically Driven Microactuator

open access: yesSmall, Volume 18, Issue 35, September 1, 2022., 2022
Herein a light‐driven micromechanical oscillator on optical fiber tip is developed, which can be operated by a low optical power (in the mW or even the µW range), can produce large mechanical displacements (>5–100 µm), and can be designed to operate at frequencies from sub‐kHz up to more than 200 kHz.
Simon Pevec, Denis Donlagic
wiley   +1 more source

Ultrasensitive nanoscale optomechanical electrometer using photonic crystal cavities

open access: yesNanophotonics, Volume 11, Issue 8, Page 1629-1642, March 2022., 2022
Abstract High‐precision detection of electric charge is critical for physical, chemical, and biological measurements. Nanophotonic optomechanical system confines the optical field at the nanoscale and enables a strong interaction between optical cavity and mechanical resonator.
Ji Xia   +5 more
wiley   +1 more source

Design and Optimization of a Triangular Shear Piezoelectric Acceleration Sensor for Microseismic Monitoring

open access: yesGeofluids, Volume 2022, Issue 1, 2022., 2022
Aiming at the characteristics of low sensitivity and narrow frequency range of existing microseismic monitoring sensors for mine water hazard prevention and control, a piezoelectric acceleration sensor for microseismic monitoring based on a kind of triangular shear structure is proposed.
Yannan Shi   +5 more
wiley   +1 more source

Principles and Applications of Miniaturized Near‐Infrared (NIR) Spectrometers

open access: yesChemistry – A European Journal, Volume 27, Issue 5, Page 1514-1532, January 21, 2021., 2021
Small scale: Miniaturized spectrometers have revolutionized near‐infrared spectroscopy by opening up a spectrum of new applications for this already mature analytical technique. This review presents current issues in this thriving field. The diversity of underlying technology, miniaturization versus performance, and very active research areas of ...
Krzysztof B. Beć   +2 more
wiley   +1 more source

A method of monitoring the functional surfaces of the micro-opto-electro-mechanical systems’ components

open access: yesНаука і техніка Повітряних Сил Збройних Сил України, 2020
The article presents a method of control of functional surfaces of MOEMS elements of special purpose, which can be used in the technology of production of such structures.
І.Ш. Невлюдов   +3 more
doaj   +1 more source

Study on the Influence of Factors on the Structure and Mechanical Properties of Amorphous Aluminium by Molecular Dynamics Method

open access: yesAdvances in Materials Science and Engineering, Volume 2021, Issue 1, 2021., 2021
The influence of the number of atoms, N = 3000, 5000, 7000, and 9000 atoms, at temperature T = 300 K and temperatures T = 300, 500, 700, 900, 1100, 1300, and 1500 K at N = 9000 atoms, on microscopic structure, phase transition temperature, and mechanical property of bulk aluminium in an amorphous state is studied by the molecular dynamics method with ...
Tuan Tran Quoc   +3 more
wiley   +1 more source

MEMS-enabled silicon photonic integrated devices and circuits [PDF]

open access: yes, 2020
Photonic integrated circuits have seen a dramatic increase in complexity over the past decades. This development has been spurred by recent applications in datacenter communications and enabled by the availability of standardized mature technology ...
Bogaerts, Wim   +8 more
core   +1 more source

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