Results 21 to 30 of about 20,183 (237)

Direct Integration of Micromachined Pipettes in a Flow Channel for Single DNA Molecule Study by Optical Tweezers [PDF]

open access: yes, 2001
We have developed a micromachined flow cell consisting of a flow channel integrated with micropipettes. The flow cell is used in combination with an optical trap setup (optical tweezers) to study mechanical and structural properties of λ-DNA molecules ...
Bennink, Martin L.   +11 more
core   +2 more sources

Femtosecond laser induced damage threshold and incubation in l-threonine aminoacid crystal

open access: yesOptical Materials: X, 2023
l-threonine aminoacid crystals exhibit high second-order optical nonlinearities that can be exploited for second harmonic generation, optical parametric amplification, and optical parametric oscillation.
L.K. Nolasco   +5 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

Mode-selective toroidal mirrors for unstable resonator planar waveguide and thin slab solid-state lasers [PDF]

open access: yes, 2009
In this paper, two new fabrication methods are developed for highly curved toroidal laser resonator mirrors based on laser micromachining of cylindrical substrates that already have the large lateral curvature RT provided by conventional polishing. These
Baker, H. J.   +3 more
core   +1 more source

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

Micromachining of AlN and Al2O3 Using Fiber Laser

open access: yesMicromachines, 2014
We report on high precision high speed micromachining of Al2O3 and AlN using pulsed near infrared fiber laser. Ablation thresholds are determined to be 30 J/cm2 for alumina and 18 J/cm2 for aluminum nitride.
Florian Preusch   +2 more
doaj   +1 more source

Laser surface texturing of a WC-CoNi cemented carbide grade: surface topography design for honing application [PDF]

open access: yes, 2018
Abrasive effectiveness of composite-like honing stones is related to the intrinsic surface topography resulting from the cubic boron nitride (CBN) grains protruding out of the metallic matrix.
Bähre, Dirk   +2 more
core   +2 more sources

Micromachining of Invar Foils with GHz, MHz and kHz Femtosecond Burst Modes

open access: yesMicromachines, 2020
In this work, a burst mode laser is used for micromachining of 20 µm–250 µm thick Invar (Fe64/Ni36) foils. Holes were drilled by firing multiple pulses transversely onto the sample without moving the beam (percussion drilling).
Simas Butkus   +4 more
doaj   +1 more source

Laser micromachining of diamond: A viable photonic and optofluidic platform [PDF]

open access: yesEPJ Web of Conferences, 2022
We describe how the ultrafast laser micromachining technique applied with different writing methods can be used for the creation of various building blocks essential for the realization of a photonic and optofluidic diamond platform.
Jedrkiewicz Ottavia   +6 more
doaj   +1 more source

Molecular Dynamics Simulation Study of Liquid-Assisted Laser Beam Micromachining Process

open access: yesJournal of Manufacturing and Materials Processing, 2018
Liquid Assisted Laser Beam Micromachining (LA-LBMM) process is an advanced machining process that can overcome the limitations of traditional laser beam machining processes. This research involves the use of a Molecular Dynamics (MD) simulation technique
Vivek Anand Menon, Sagil James
doaj   +1 more source

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