Results 31 to 40 of about 52,116 (289)

Surface micromachined membranes for tunnel transducers [PDF]

open access: yes, 1997
We have developed low-temperature surface micromachining procedures for the fabrication of suspended SiO2/Si3N4 membranes. This fabrication method was integrated with electron beam lithography, anisotropic ion etching, and electroplating to construct ...
George, Thomas   +2 more
core   +1 more source

Analysis of the Micromachining Process of Dielectric and Metallic Substrates Immersed in Water with Femtosecond Pulses

open access: yesMicromachines, 2015
Micromachining of 1 mm thick dielectric and metallic substrates was conducted using femtosecond pulse generated filaments in water. Several hundred microjoule energy pulses were focused within a water layer covering the samples.
Simas Butkus   +7 more
doaj   +1 more source

Surface micromachined mechanisms and micromotors [PDF]

open access: yes, 1991
Electric micromotors are sub-millimeter sized actuators capable of unrestrained motion in at least one degree of freedom. Polysilicon surface micromachining using heavily phosphorus-doped LPCVD polysilicon for the structural material, LPCVD silicon ...
Mehregany, Mehran, Tai, Yu-Chong
core   +1 more source

Fabrication of Implantable, Enzyme-Immobilized Glutamate Sensors for the Monitoring of Glutamate Concentration Changes in Vitro and in Vivo

open access: yesMolecules, 2014
Glutamate sensors based on the immobilization of glutamate oxidase (GlutOx) were prepared by adsorption on electrodeposited chitosan (Method 1) and by crosslinking with glutaraldehyde (Method 2) on micromachined platinum microelectrodes.
Tina T.-C. Tseng   +2 more
doaj   +1 more source

Note: femtosecond laser micromachining of straight and linearly tapered capillary discharge waveguides [PDF]

open access: yes, 2011
Gas-filled capillary discharge waveguides are important structures in laser-plasma interaction applications, such as the laser wakefield accelerator. We present the methodology for applying femtosecond laser micromachining in the production of capillary ...
Abu-Azoum, Salima Saleh   +7 more
core   +1 more source

Micro Metal Additive Manufactured Low-Loss Slotted Rectangular Waveguides Operating at 220-500 GHz

open access: yesFrontiers in Physics, 2021
This paper reports the design, fabrication and measurement techniques for a set of low-loss slotted waveguides. The waveguides are fabricated based on a micro metal additive manufacturing technology.
Zixian Wu   +7 more
doaj   +1 more source

Micromachining of electret materials, advantages and possibilities [PDF]

open access: yes, 1988
A process is described for the micromachining of organic electret materials like Teflon FEP (fluorinated ethylene propylene). The authors have used photolithography and plasma etching, by which electrets can be etched selectively.
Bergveld, P., Voorthuyzen, J.A.
core   +3 more sources

Optical Sensor, Based on an Accelerometer, for Low-Frequency Mechanical Vibrations

open access: yesMicromachines, 2022
This article documents the design, manufacture, and testing of a silicon inertial optical sensor for low-frequency (lower than 2 kHz) applications. Three accelerometer designs optimized by parameterization using Finite Element Analysis were considered ...
Rodolfo Sánchez-Fraga   +5 more
doaj   +1 more source

Ultrafast Laser Pulses for Structuring Materials at Micro/Nano Scale: From Waveguides to Superhydrophobic Surfaces

open access: yesPhotonics, 2017
The current demand for fabricating optical and photonic devices displaying high performance, using low-cost and time-saving methods, prompts femtosecond (fs)-laser processing as a promising methodology.
Daniel S. Correa   +5 more
doaj   +1 more source

Development of Broadband High-Frequency Piezoelectric Micromachined Ultrasonic Transducer Array

open access: yesSensors, 2021
Piezoelectric micromachined ultrasonic transducers (PMUT) are promising elements to fabricate a two-dimensional (2D) array with a pitch small enough (approximately half wavelength) to form and receive arbitrary acoustic beams for medical imaging. However,
Xu-Bo Wang   +7 more
doaj   +1 more source

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