By Sunil Bhardwaj


Laser ablation: This method is extensively used for the preparation of nanoparticles and particulate films. In this process, a laser beam is used as the primary excitation source for vaporisation of metal precursor from the surface and generating clusters directly from a solid sample. A high energy pulsed laser beam hitting the target material generates temperatures (greater than 104 K) which vaporises the substance quickly. The hot metal vapours are directed in a pulsed flow of inert carrier gas (helium) and expanded through a nozzle into a vacuum. The cool, high-density helium flowing over the target serves as a buffer gas in which clusters of the target material are formed. The porosity of the clusters formed can be modified by the carrier gas flow rate thus enabling a control of the microstructure of the coatings. The resulting nano particulate thick films are suitable candidates for application in membrane technology, catalysis and lithium ion batteries. Synthesis of ZrO, and SnO, nanoparticulate thick films, lithium rnagnate, silicon and carbon is also been carried out using technique.

MCQ on Nanomaterials from Engineering Chemistry
Prof. Gianfranco Coletti

Shared publicly - 2019-08-23 00:00:00

Don’t want your columns to simply stack in some grid tiers? Use a combination of different classes for each tier as needed. See the example below for a better idea of how it all works.

Prof. Maheshwar Sharon

Shared publicly - 2019-08-24 00:00:00

For grids that are the same from the smallest of devices to the largest, use the .col and .col-* classes. Specify a numbered class when you need a particularly sized column; otherwise, feel free to stick to


Shared publicly - 2023-02-28 11:09:52

this is


Shared publicly - 2023-02-28 10:48:10


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