The New Microscope Detects Micron-sized Particles Laser Pointer
Researchers have now developed a new type of microscope that can identify single micron-sized particles. This new method may be used in airports or other high-security locations. As a highly sensitive and low-cost method, it can quickly screen out people with potentially dangerous tiny substances. In the "Optical Letters" journal of the Optical Society, researchers at the Lincoln Laboratory of the Massachusetts Institute of Technology confirmed the function of their new microscope by measuring the infrared spectra of 3-micron silica or acrylic spherical stars. This new technology uses a simple laser pointer optical device composed of compact components. Miniaturize the instrument to a portable device the size of a shoebox.
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The most important advantage of our new laser pointer technology is its high sensitivity, but its design is very simple. He is an employee of MIT Lincoln Laboratory and the first author of the paper. It provides new application opportunities to implement non-destructive chemical analysis while paving the way for more sensitive and compact sensing instruments. The ability of the microscope to identify individual particles can make it useful for the rapid detection of chemical threats or controlled substances. Its high sensitivity is also ideal for scientific analysis of very small samples or measuring the optical properties of materials. Detection spectrum fingerprint infrared spectrum is usually used to identify unknown materials because almost every material can be identified by its unique infrared absorption spectrum or fingerprint. The new method detects infrared fingerprints. No need to use a laser pointer infrared detector.
2020-08-03 12:18:17
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