Results 41 to 50 of about 6,005 (217)

Femtosecond-laser-written optofluidics in alumino-borosilicate glass

Optical Materials: X, 2019
Femtosecond Laser Irradiation followed by Chemical Etching (FLICE) is a powerful technique for prototyping three-dimensional microfluidic structures in glass.
Andrea Crespi, Roberto Osellame, Francesca Bragheri   +2 more
doaj   +1 more source

Effect of surface patterning using femtosecond laser on micromechanical and structural properties of micromechanical sensors

Materials Research Express, 2020
A femtosecond laser can be used to fabricate microstructures on a silicon microcantilever surface with high precession and minimal sidewall defects. The aim of this study is to investigate the effect of the creation of microgrooves and sub-microgrooves ...
Mahmoud A Al-Gawati, Abdulaziz Alhazaa, Hamad Albrithen, Jamal Alnofiay, Abdullah Alodhayb   +4 more
doaj   +1 more source

Strategies for improved temporal response of glass-based optical switches

Scientific Reports, 2022
We present an optimization of the dynamics of integrated optical switches based on thermal phase shifters. These devices have been fabricated in the volume of glass substrates by femtosecond laser micromachining and are constituted by an integrated Mach ...
Matteo Calvarese, Petra Paiè, Francesco Ceccarelli, Federico Sala, Andrea Bassi, Roberto Osellame, Francesca Bragheri   +6 more
doaj   +1 more source

Processing and Profile Control of Microhole Array for PDMS Mask with Femtosecond Laser

Micromachines, 2022
Polydimethylsiloxane (PDMS) is hailed as one of the foundational materials that have been applied to different products in various fields because of its chemical resistance, low cost, excellent flexibility, and high molding capability.
Xifang Zhang, Zhenqiang Yao, Zhibao Hou, Jiacheng Song   +3 more
doaj   +1 more source

Fabrication of a microresonator-fiber assembly maintaining a high-quality factor by CO2 laser welding

, 2015
We demonstrate fabrication of a microtoroid resonator of a high-quality (high-Q) factor using femtosecond laser three-dimensional (3D) micromachining. A fiber taper is reliably assembled to the microtoroid using CO2 laser welding.
Cheng, Ya, Fang, Zhiwei, Lin, Jintian, Liu, Zhengming, Qiao, Lingling, Wang, Min, Yao, Jinping   +6 more
core   +1 more source

Real‐Time 3D Ultrasound Imaging with an Ultra‐Sparse, Low Power Architecture

Advanced Healthcare Materials, EarlyView.
This article presents a novel, ultra‐sparse ultrasound architecture that paves the way for wearable real‐time 3D imaging. By integrating a unique convolutional array with chirped data acquisition, the system achieves high‐resolution volumetric scans at a fraction of the power and hardware complexity.
Colin Marcus, Md Osman Goni Nayeem, Aastha Shah, Jason Hou, Shrihari Viswanath, Maya Eusebio, David Sadat, Anantha P. Chandrakasan, Tolga Ozmen, Canan Dagdeviren   +9 more
wiley   +1 more source

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

High energy green nanosecond and picosecond pulse delivery through a negative curvature fiber for precision micro-machining [PDF]

, 2015
In this paper we present an anti-resonant guiding, low-loss Negative Curvature Fiber (NCF) for the efficient delivery of high energy short (ns) and ultrashort (ps) pulsed laser light in the green spectral region.
Carter, Richard M., Hand, Duncan P., Jaworski, Piotr, Knight, Jonathan C., Shephard, Jonathan D., Yu, Fei   +5 more
core   +1 more source

Anti‐Slip Material‐Based Strategies and Approaches

Advanced Materials Technologies, EarlyView.
This review highlights the principle mechanisms of slipping at the microscale, linking contact mechanics with a friction behavior model for surface interfaces. Main strategies to develop anti‐slip properties to the surfaces are discussed alongside standardized testing approaches.
Sogand Abbaspoor‐Zanjani, Carlo Antonini, Teresa Gatti, Mengjiao Wang   +3 more
wiley   +1 more source

Fabrication of micro-structures for optically driven micromachines using two-photon photopolymerization of UV curing resins

, 2008
Two-photon photopolymerization of UV curing resins is an attractive method for the fabrication of microscopic transparent objects with size in the tens of micrometers range.
Deitz D, Halina Rubinsztein-Dunlop, Ikuta K Hirowatari K, Inoué S, Knöner G, Norman R Heckenberg, Odian G, Theodor Asavei, Timo A Nieminen   +8 more
core   +1 more source