Microspodography

Micropodography is a method for studying microparticles based on the analysis of their chemical composition. The word "microspodography" comes from the Greek words "micro" - small, "spodos" - ashes, ash and "grapho" - to write, depict.

The essence of the method is that microparticles (up to 100 microns in size) are placed on a glass slide and irradiated with a focused beam of X-rays. As a result of this, X-ray excitation of the atoms of the substance of the particles occurs and they emit characteristic X-ray radiation. By analyzing the energy spectrum of this radiation, it is possible to determine the elemental composition of microparticles.

Micropodography is widely used in forensic science to analyze microparticles found at a crime scene (particles of paint, metal, glass, etc.). It allows you to establish a connection between the suspect and the crime scene. This method is also used in medicine, biology, geology and other fields to study the composition of microparticles.

Micropodography is a method that was created by scientists from Moscow State University. M.V. Lomonosov together with Professor Alberto Masatrozza of the University of St. John in Florence and his colleagues by improving microscopy. A microspodogram is an image down to millionths of a millimeter obtained using a microscope. This method is used to study the structure of objects at high magnification, which makes it possible to find even microscopic inhomogeneities. Anyone who has already heard about light microscopy probably imagines with these words a cross section of an organ, as well as cells within which various organelles are located to perform certain functions. In general, all this is true, but we are talking about a multi-thousand-fold increase - no less than a thousand times. Since school, many people know that human cells are about two microns in size, but it is very difficult to examine them due to the huge size and low brightness of the light beam, and even large mechanical microscopes can only provide images in different planes, the “ray” in their described there is simply no sight. But this method increased the very narrow beam of light from the laser several thousand times, and this became possible thanks to a special effect on it, due to which the wavelength of the radiation was reduced to fractions of nanometers. Previously, scientists could not conduct such experiments in