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Laser ablation or photoablation (also called laser blasting [1] [2] [3]) is the process of removing material from a solid (or occasionally liquid) surface by irradiating it with a laser beam. At low laser flux, the material is heated by the absorbed laser energy and evaporates or sublimates .
Laser ablation synthesis in solution (LASiS) is a commonly used method for obtaining colloidal solution of nanoparticles in a variety of solvents. [ 1 ] [ 2 ] Nanoparticles (NPs,), are useful in chemistry, engineering and biochemistry due to their large surface-to-volume ratio that causes them to have unique physical properties. [ 3 ]
Cell ablation can also be used as a tool to produce transgenic organisms lacking a cell type, and as a cure for certain diseases such as cancer. [2] The term is not to be confused with genetic ablation: a method of modifying DNA in order to disrupt the production of a specific gene. [3]
A new type of ablation therapy that utilizes alpha radiation is now undergoing clinical trials for treatment of several types of solid tumors. Alpha particles are emitted from intratumorally-inserted seeds that have Ra-224 atoms fixed to their surface.
Lasers are used to treat cancer in several different ways. Their high-intensity light can be used to shrink or destroy tumors or precancerous growths. Lasers are most commonly used to treat superficial cancers (cancers on the surface of the body or the lining of internal organs) such as basal-cell skin cancer and the very early stages of some cancers, such as cervical, penile, vaginal, vulvar ...
Laser ablation is also used to remove part of the uterine wall in women with menstruation and adenomyosis problems in a process called endometrial ablation. Researchers have demonstrated a successful technique for ablating subsurface tumors with minimal thermal damage to surrounding healthy tissue, by using a focused laser beam from an ultra ...
The synthesis efficiency is about 100 times higher than for the laser ablation method. The time required to make SWNT forests of the height of 2.5 mm by this method was 10 minutes in 2004. Those SWNT forests can be easily separated from the catalyst, yielding clean SWNT material (purity >99.98%) without further purification.
All well-established techniques of carbon nanotube growth, such as arc-discharge, [3] [14] laser ablation [15] [16] and chemical vapor deposition, [17] are used for mass-production of BN nanotubes at a tens of grams scale. [13] BN nanotubes can also be produced by ball milling of amorphous boron, mixed with a catalyst (iron powder), under NH 3 ...