Laser-induced Damage
Laser-induced Damage - Related Videos
03:21
Epidermal Laser Wounding: Inducing Localized Damage to Examine Repair Processes in C. elegans
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2023
This video introduces a method of laser wounding, which is used to cause very precise injuries in the worm epidermis. The sample protocol is from a study of wound response and repair.
10:44
Laser Microirradiation to Study In Vivo Cellular Responses to Simple and Complex DNA Damage
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Cited by 12 •
2018
The goal of this protocol is to describe how to use laser microirradiation to induce different types of DNA damage, including relatively simple strand breaks and complex damage, to study DNA damage signaling and repair factor assembly at damage sites in vivo.
08:07
Laser-induced Forward Transfer of Ag Nanopaste
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Cited by 13 •
2016
We demonstrate the use of the Laser-induced forward transfer technique (LIFT) for the printing of high-viscosity Ag paste. This technique offers a simple, low temperature, robust process for non-lithographically printing microscale 2D and 3D structures.
02:30
Performing Laser-Induced Brain Injury in a Rat Model
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2025
This video demonstrates a procedure to generate precise, controlled brain injury in the rat motor cortex using a laser.
07:08
A Mouse Model for Laser-induced Choroidal Neovascularization
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Cited by 87 •
2015
Here, we present the mouse laser-induced choroidal neovascularization (CNV) protocol, an experimental model that re-creates the vascular hallmarks of neovascular age-related macular degeneration (AMD). Once mastered, it can reliably and effectively induce CNV as a model system to test various experimental measures.
FAQs
These mechanisms represent distinct ways laser exposure can harm biological material. Photothermal effects arise from heating, photochemical effects from light-driven chemical reactions, and photomechanical effects from physical stress. Identifying the dominant mechanism helps researchers interpret the type of injury observed and select exposure conditions that support either deliberate tissue removal or preservation of viable cells.
Wavelength, pulse duration, energy density, and exposure time all influence whether biological material remains within its tolerance. Their effects must be considered together rather than evaluated as isolated settings, because changing one exposure characteristic can alter the resulting damage. Tracking these parameters allows researchers to compare experiments and establish conditions that limit unintended injury.
Controlled ablation and microsurgery intentionally remove or disrupt selected biological material, whereas unintended injury can compromise cells or tissues that researchers aim to preserve. The distinction depends on how exposure conditions relate to biological tolerance and damage thresholds. Making it clearly supports reliable experimental design, helps protect surrounding material, and improves interpretation of laser-based manipulation results.
Researchers characterize a damage threshold by relating observed biological effects to exposure conditions such as energy density, pulse duration, wavelength, and exposure time. The goal is to identify when material shifts from tolerated exposure toward disruption or destruction. These measurements provide a basis for setting operating limits and separating effective laser manipulation from excessive exposure.
Optimization requires balancing the intended laser effect against the need to preserve viable cells and tissues. Researchers can adjust wavelength, pulse duration, energy density, and exposure time while monitoring whether biological damage remains acceptable. This approach helps establish practical operating conditions for imaging or manipulation and reduces the risk that repeated or excessive exposure will alter the experiment.
Characterizing laser-induced damage supports two related goals: designing experiments that produce controlled biological effects and using laser instruments without unnecessary injury to specimens. In biomedical research, threshold information helps guide imaging, microsurgery, ablation, and other manipulation protocols. It also provides a scientific basis for recognizing when exposure may exceed cellular or tissue tolerance.