Laser Micro Machining
Laser Micro Machining - Related Videos
07:11
Laser Micro-Irradiation to Study DNA Recruitment During S Phase
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Cited by 4 •
2021
This protocol describes a non-invasive method to efficiently identify S-phase cells for downstream microscopy studies, such as measuring DNA repair protein recruitment by laser micro-irradiation.
10:03
Quantitative Locomotion Study of Freely Swimming Micro-organisms Using Laser Diffraction
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Cited by 10 •
2012
Microscopic organisms like the free-swimming nematode C. elegans, live and behave in a complex three-dimensional environment. We report on a novel approach that provides analysis of C. elegans using diffraction patterns. This approach consists of tracking the temporal periodicity of diffraction patterns generated by directing laser light through a cuvette.
08:18
Application of Laser Micro-irradiation for Examination of Single and Double Strand Break Repair in Mammalian Cells
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Cited by 27 •
2017
Confocal fluorescence microscopy and laser micro-irradiation offer tools for inducing DNA damage and monitoring the response of DNA repair proteins in selected sub-nuclear areas. This technique has significantly advanced our knowledge of damage detection, signaling, and recruitment. This manuscript demonstrates these technologies to examine single and double strand break repair.
09:02
AC Synchronous Machine Synchronization
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2023
Source: Ali Bazzi, Department of Electrical Engineering, University of Connecticut, Storrs, CT. Three-phase wound-rotor synchronous generators are the main source of electrical power worldwide. They require a prime mover and an exciter in order to generate power. The prime mover can be a turbine spun by fluid (gas or liquid), thus the sources of the fluid can be water running off a dam through a long nozzle, steam from water evaporated using burned coal, etc. Most power plants including coal,...
01:19
Machines
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2023
Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. One example of a machine is the cutting plier, which is used to cut wires by applying forces to its handles. When equal and opposite forces are exerted on the handles of the cutting plier, they cause the cutting edges to come together and apply equal and opposite reaction forces on the wire, which are greater than the applied forces. A free-body diagram of the...
FAQs
These parameters control how laser energy is deposited in the material. Beam position determines where the modification occurs, while intensity and pulse duration influence whether the response is localized melting, vaporization, or ablation. Wavelength also affects the interaction with the material. Coordinating these variables allows researchers to produce either fine patterns, drilled apertures, cuts, or other controlled geometries.
Metals, polymers, ceramics, and other materials can respond differently to the same focused laser exposure. The selected wavelength, intensity, pulse duration, and beam position therefore need to match the intended material modification. Adjusting these conditions helps direct energy toward the desired localized change, such as melting, vaporization, ablation, or surface patterning, rather than an unsuitable outcome.
Localized energy deposition confines the laser-driven material change to a small region, supporting micrometer-scale control over the resulting feature. This concentration is important when fabricating intricate surface structures, narrow channels, or small apertures. In physics and engineering, controlling where energy enters the material helps connect optical beam parameters with the geometry and character of the manufactured feature.
A typical plan begins by selecting the material and identifying the required feature, such as a cut, aperture, channel, or pattern. The operator then focuses the laser, sets the wavelength, intensity, and pulse duration, and controls beam position across the target region. The exposure is adjusted to produce the intended localized melting, vaporization, ablation, or related modification.
The technique can support fabrication of microchannels, apertures, sensors, electronic components, and intricate surface structures. These outputs use the process's fine spatial control to create small or complex geometries in materials including metals, polymers, and ceramics. Such features are relevant to advanced manufacturing and research devices where conventional large-scale fabrication approaches may not provide the required dimensional detail.
It is useful when experiments or devices require complex geometries, micrometer-scale features, or localized modification without direct mechanical contact. Researchers can apply it to prototype sensors, electronic components, microchannels, apertures, and patterned surfaces. Its combination of fine spatial control, reduced mechanical stress, and rapid prototyping supports exploratory fabrication as well as advanced manufacturing studies.