Staff members of P. Lebedev Physical Institute of the Russian Academy of Sciences (FIAN) developed a new technology of direct laser transfer of the substance based on visible light. Operation of equipment capable of reproducing oil paints, lithographing and even drawing microcircuits is possible via computer, as by printer.
Today laser is used in many production processes; it cuts, brazes, melts and sounds different media. In early 21st century this list was supplemented by transfer of the substance under pressure, which occurs in micro-volume under action of light impulse. Ultraviolet devices suitable for display creation, lithography, manufacture of miniature electronic components and power sources have become the main tool of this technology called "direct laser writing". They have a number of indisputable advantages (low boundary energy, insignificant depth of penetration and a potential for resolution increase to several thousands of points per inch). However, they have also essential shortcomings, such as a high price, necessity for a special UV optics and materials resistant to ultraviolet radiation, impossibility of transfer of a great number of elements by one impulse.
A group of researchers from FIAN headed by Alexander Nasibov, Dr. Sc. (Eng.), has offered an original method of "writing", when transfer of the substance is effected by copper-vapor laser operating in the mode of image brightness intensifier. It is brought to the threshold value, which "provokes" emission, for example, of oil-color. Moreover, such technology allows "to copy" not only certain details of a picture, but also its fragments. Scientists proved its efficiency through an experiment: they transferred a picture from the book jacket of Letters to Gala (1999) by French writer Paul Eluard to plastic cards.
The method suggested by FIAN researchers differs fundamentally from other similar methods by its ability to transfer various substances, including solid ones, to ... Читать далее