Contact Printing

Photolithography via nanotechnology Photolithography has been one of the first techniques to be applied in the micropatterning of surfaces for various atomic number 18as including for the biomedical field. Briefly, photolithography involves the placement of a precursor polymer outcome and a UV light photoinitiator onto the substrate of choice, so that it forms a musical scale down but uniform film (~1 mm thick). Photopolymerization is besides performed under ultraviolet (UV) light using a veil to define selected exposure beas. Only the exposed regions of the prepolymer, which are a result of a patterned affect that is set in between the light source and the precursor polymer solution, are submitted to photopolymerization. The surface is washed, going away the patterned projections. Even though there are some(prenominal) variations of photolithographic methods, all rely on the engross of a photoresistant mask with the desired pattern and the exposure of a prec ursor polymer solution to UV radiation.

Despite the enormous electric potential offered by this technology, the occupation of photolithography to patterning in biomedical applications presents some drawbacks, such as: (1) the higher(prenominal) costs associated with the necessary equipment, namely, those related with the fabrication of the photoresistant mask, (2) the read for clean-room facilities, (3) the pointless expertise required from the biologists, and (4) the use of chemical compounds which may be hepatotoxic to cells and induce denaturation of proteins. CONTACT PRINTING I. origination Organ printing is a biomedically germane(predicate) variant of rapid prototyping technology, which is base! on tissue fluidity. Computer-assisted down payment (printing) of inwrought materials (cells or matrix) is done one mould at a time until a particular 3D form is achieved. However, juvenile attempts using rapid prototyping technologies to design firm synthetic scaffolds [1215] see from the inability to precisely place cells or cell aggregates into a printed...If you want to get a teeming essay, order it on our website: OrderEssay.net

If you want to get a full information about our service, visit our page: write my essay