Results 21 to 30 of about 5,727 (200)

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

Micromachines, 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, Aleksandr Alesenkov, Domas Paipulas, Eugenijus Gaižauskas, Andrius Melninkaitis, Dalia Kaškelytė, Martynas Barkauskas, Valdas Sirutkaitis   +7 more
doaj   +1 more source

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

Molecules, 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, Cheng-Fu Chang, Wen-Chin Chan   +2 more
doaj   +1 more source

Femtosecond Beam Transformation Effects in Water, Enabling Increased Throughput Micromachining in Transparent Materials

Applied Sciences, 2019
Femtosecond lasers are widely applied in scientific and industrial fields. Recent trends in the laser market show decreasing prices for femtosecond units, which will ultimately lead to the opening of new markets that were inaccessible in the past due to ...
Simas Butkus, Eugenijus Gaižauskas, Lina Mačernytė, Vytautas Jukna, Domas Paipulas, Valdas Sirutkaitis   +5 more
doaj   +1 more source

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

Frontiers 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, Guanghua Shi, Yang Yu, Yang Yu, Xiaozhu Wen, Cheng Guo, Cheng Guo, Anxue Zhang   +7 more
doaj   +1 more source

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

Photonics, 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, Juliana M. P. Almeida, Gustavo F. B. Almeida, Marcos R. Cardoso, Leonardo De Boni, Cleber R. Mendonça   +5 more
doaj   +1 more source

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

Micromachines, 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, Margarita Tecpoyotl-Torres, Israel Mejía, Jorge Omar Mañón, Luis Eduardo Riestra, Jesús Alcantar-Peña   +5 more
doaj   +1 more source

On the Concentration Overpotential of PEFC with Micromachined Ti Current Collector

Journal of Thermal Science and Technology, 2010
Micromachined titanium thin film current collector, Ti-CC, that is developed in our previous work is used to investigate the concentration overpotential due to the liquid water filling in the through-holes of Ti-CC.
Kazuyoshi FUSHINOBU, Hironori SHIOZAKI, Ken OKAZAKI   +2 more
doaj   +1 more source

Development of Broadband High-Frequency Piezoelectric Micromachined Ultrasonic Transducer Array

Sensors, 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, Le-Ming He, You-Cao Ma, Wen-Juan Liu, Wei-Jiang Xu, Jun-Yan Ren, Antoine Riaud, Jia Zhou   +7 more
doaj   +1 more source

Influence of phase transformation on the micromachinability of laser powder bed fused Inconel 718

Scientific Reports
The characteristics of laser powder bed fusion (L-PBF) Inconel-718 (IN-718) differ from those of its wrought counterpart because of the rapid heating and cooling cycles involved during the process.
S Vishnu, Basil Kuriachen, Jose Mathew
doaj   +1 more source

New Approach to High-Speed Multi-Coordinate Milling Based on Kinematic Cutting Parameters and Acoustic Signals

Journal of Manufacturing and Materials Processing
In this work, a new approach to high-speed multi-coordinate milling was developed. The new approach is based on a new model of trochoidal machining; this is, in turn, based on the theoretical thickness of a chip and its ratio to the cutting edge’s radius,
Petr M. Pivkin, Mikhail P. Kozochkin, Artem A. Ershov, Ludmila A. Uvarova, Alexey B. Nadykto, Sergey N. Grigoriev   +5 more
doaj   +1 more source