Results 11 to 20 of about 1,557,460 (282)

Fully integrated stokes snapshot imaging polarimeter [PDF]

open access: yesEPJ Web of Conferences, 2020
We present a new concept for a fully integrated nano-optical snapshot imaging polarimeter. It consists of a nano-optical retarder and polarizer array with various orientations combined with a microlens array and crosstalk module. That facilitates a fast,
Stock Carsten   +5 more
doaj   +1 more source

Optical spatial modulation design [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2020
Visible light communication (VLC) systems are inherently signal-to-noise ratio (SNR) limited due to link budget constraints. One favourable method to overcome this limitation is to focus on the pre-log factors of the channel capacity. Multiple-input multiple-output (MIMO) techniques are therefore a promising avenue of research.
T. Cogalan, H. Haas, E. Panayirci
openaire   +4 more sources

Magnetically Enhanced Liquid SERS for Ultrasensitive Analysis of Bacterial and SARS-CoV-2 Biomarkers

open access: yesFrontiers in Bioengineering and Biotechnology, 2021
In this work, it is shown that surface-enhanced Raman scattering (SERS) measurements can be performed using liquid platforms to perform bioanalysis at sub-pM concentrations.
Zhang Ji   +13 more
doaj   +1 more source

Distribution of temperature in a single lens due to absorption of light and heat conduction: an adaptive solver [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2012
We develop an algorithm for the solution of the stationary heat-equation in a single lens due to absorption of light, heat-conduction and transfer of the heat to the environment while we assume rotational symmetry for the whole situation.
Moritz M. J.
doaj   +1 more source

PRODUCIBILITY ANALYSIS OF LENS SYSTEM DURING OPTICAL DESIGN STAGE [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2020
Subject of Research. The paper presents the idea of combining various stages of production of optical devices in a single logical sequence from the design of optical elements, through the mechanical and technological production stages, to the calculation
Irina L. Livshits, Oliver Faehnle
doaj   +1 more source

Compact silicon photonics circuit to extract multiple parameters for process control monitoring [PDF]

open access: yes, 2020
We present a compact interferometer circuit to extract multiple model parameters of on-chip waveguides and directional couplers from optical measurements.
Bogaerts, Wim   +5 more
core   +2 more sources

Optical Optimization of Tandem Solar Cells: A Systematic Review for Enhanced Power Conversion

open access: yesNanomaterials, 2023
Tandem solar cells (TSCs) perform a better adaptation of the incident photons in different-energy-level bandgap materials, and overcome the Shockley–Queisser limit, but they require advanced control over the management of light for optimum performance ...
Ayesha Razi, Amna Safdar, Rabia Irfan
doaj   +1 more source

A SEMI-AUTOMATED APPROACH TO MODEL ARCHITECTURAL ELEMENTS IN SCAN-TO-BIM PROCESSES [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023
In the last years, the AEC (Architecture, Engineering and Construction) domain has exponentially increased the use of BIM and HBIM models for several applications, such as planning renovation and restoration, building maintenance, cost managing, or ...
O. Roman   +6 more
doaj   +1 more source

Design of Micro Size Optical Scanner Systems [PDF]

open access: yesEngineering and Technology Journal, 2012
The design and analysis of micro optical scanner systems are presented. A simulate software was implemented to study, firstly, the effects of miniaturization on the general optical properties of the system, secondly, the optical design and performance ...
Samira M. Arif   +2 more
doaj   +1 more source

Opto-electronic high order feedback neural network [PDF]

open access: yes, 1990
A novel neural network design, in which nonlinearities are created by feedback, is described. It is called the HOFNET. The design is suitable for optical implementation because it is tolerant of the limited dynamic ranges present in optical systems.
Mao, Z.Q.   +2 more
core   +1 more source

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