biophotonics - POORNIMA COLLEGE OF ENGINEERING Department...

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A Seminar on BIOPHOTONICS Guided by: Mrs. Kiran Sharma POORNIMA COLLEGE OF ENGINEERING Department of Electronics & Communication Engineering Presented by: Mohit Bajpai 4 th year, 8 th sem www.powerpointpresentationon.blogspot.com
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INTRODUCTION The term biophotonics denotes a combination of biology and photonics with photonics being the science and technology of generation, manipulation, and detection of photons, quantum units of light. Photonics is related to electronics in that it is believed that photons will play a similar central role in future information technology as electrons do today.
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Photonics is the technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. Biophotonics applies photonics to the fields of medicine, biology and biotechnology. BIOPHOTONICS
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PRACTICAL BIOPHOTONICS Nearly all biophotonic applications involve: a light source, a target subject, a detection sensor, and an interpreter.
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Light Sources for Biophotonics Most dominantly used light source are lasers. LED´s, Lamps play an important role. Typical wavelengths, which are used in biophotonics are between 200 nm (UV) and 3000 nm (near IR).
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Electrons and Photon An electron is a subatomic particle. Carrying a negative charge an electron orbits an atom’s nucleus and is bound to it by electromagnetic forces. An electron has a mass that is minuscule in comparison with even the smallest of atoms, coming in at about one thousandth the size of the tiniest atom. The electron is a basic unit of nature, meaning it cannot be broken down into smaller units.
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Energy of photon = energy needed to remove an electron + kinetic energy of the emitted electron or hf= Ø + E
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