Results 21 to 30 of about 30,833 (287)

Influence of Collimation on Alignment Accuracy in Proximity Lithography

open access: yesIEEE Photonics Journal, 2014
The alignment method based on moiré imaging has been wildly used for its high accuracy of physical measurement, which utilized the phase of moiré fringe to measure the relative linear displacement between the mask and the wafer.
Nan Wang   +6 more
doaj   +1 more source

Fabrication of Micro-Optics Elements with Arbitrary Surface Profiles Based on One-Step Maskless Grayscale Lithography

open access: yesMicromachines, 2017
A maskless lithography method to realize the rapid and cost-effective fabrication of micro-optics elements with arbitrary surface profiles is reported. A digital micro-mirror device (DMD) is applied to flexibly modulate that the exposure dose according ...
Qinyuan Deng   +5 more
doaj   +1 more source

Versatile Functionalization of Carbon Nanomaterials by Ferrate(VI)

open access: yesNano-Micro Letters, 2020
As a high-valent iron compound with Fe in the highest accessible oxidation state, ferrate(VI) brings unique opportunities for a number of areas where chemical oxidation is essential.
Ying Zhou   +4 more
doaj   +1 more source

Collimation Sensing With Differential Grating and Talbot Interferometry

open access: yesIEEE Photonics Journal, 2014
The collimation of monochromatic light in optical metrology is of great importance for its determination of the accuracy of physical measurement. This paper proposes a novel collimation testing method with the differential grating (DG) characterized by ...
Nan Wang   +4 more
doaj   +1 more source

Gaussian-Linearized Transformer with Tranquilized Time-Series Decomposition Methods for Fault Diagnosis and Forecasting of Methane Gas Sensor Arrays

open access: yesApplied Sciences, 2023
Methane is considered as a clean energy that is widely used in places with high environmental requirements. The increasing demand for methane exploration in polar and deep sea extreme environments has a positive role in carbon neutrality policies.
Kai Zhang   +7 more
doaj   +1 more source

3D Print and Shrink Microfabrication of Polymer-derived Ceramics: Silicon oxycarbide Glass-Ceramic Microneedles and Microfluidics [PDF]

open access: yes, 2023
Polymer-derived ceramics are advancing various sectors, such as health, defence, and aerospace, however, their manufacturing has been cumbersome, unsafe, and design-limited.
Ahmad, Norouzi   +3 more
core   +1 more source

Biosynthesis and Antibacterial Activity of Silver Nanoparticles Using Yeast Extract as Reducing and Capping Agents

open access: yesNanoscale Research Letters, 2020
Biosynthesis for the preparation of antimicrobial silver nanoparticles (Ag NPs) is a green method without the use of cytotoxic reducing and surfactant agents.
Mengjun Shu   +8 more
doaj   +1 more source

Topography Measurement of Large-Range Microstructures through Advanced Fourier-Transform Method and Phase Stitching in Scanning Broadband Light Interferometry

open access: yesMicromachines, 2017
Scanning broadband light interferometry (SBLI) has been widely utilized in surface metrology due to its non-contact and high-accuracy method. In SBLI, phase evaluation through Fourier Transform (FT) is a prevalent and efficient technique, where the ...
Yi Zhou, Yan Tang, Yong Yang, Song Hu
doaj   +1 more source

A High Quantum Efficiency Narrow-Band UV-B AlGaN p-i-n Photodiode With Polarization Assistance

open access: yesIEEE Photonics Journal, 2021
We designed and fabricated narrow-band UV-B AlGaN p-i-n photodiodes (PDs) with a full-width at half-maximum (FWHM) of 8 nm by optimizing the Al composition and thickness of the AlGaN layers. To improve the photoelectric response of the narrow-band PDs, a
Qianyu Hou   +10 more
doaj   +1 more source

Polymer microfluidic devices: an overview of fabrication methods

open access: yesU.Porto Journal of Engineering, 2015
The amount of applications associated with microfluidic devices is increasing since the introduction of Lab-on-a-chip devices in the 1990s, especially regarding biomedical and clinical fields.
Raquel O. Rodrigues   +3 more
doaj   +1 more source

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