Synthesis of nanoparticles using pulsed laser deposition.SYNTHESIS OF NANOPARTICLES USING PULSED LASER DEPOSITION: Nanomaterials are low-dimensional material systems whose size is intermediate between that of atoms or molecules and that of bulk solids. These novel materials have different physical and chemical properties from those of the bulk parent compounds and also from those of the constituent atoms and molecules. The properties strongly depend on size and shape of the particles. These properties are controlled by quantum size effects, altered thermodynamics thermodynamics, branch of science concerned with the nature of heat and its conversion to mechanical, electric, and chemical energy. Historically, it grew out of efforts to construct more efficient heat engines—devices for extracting useful work from expanding and modified chemical reactivity. Wide varieties of physical or chemical properties available in nanomaterials are useful for many applications including electronic-, magnetic-, optical-, and bio-sensors. Currently we are doing research on the growth, characterization, and exploitation of electronic and magnetic materials Magnetic materials Materials exhibiting ferromagnetism. The magnetic properties of all materials make them respond in some way to a magnetic field, but most materials are diamagnetic or paramagnetic and show almost no response. at the nanoscale-the scale of individual atoms. We are attempting to grow various nanoparticles in thin film forms using Pulsed Laser Deposition technique. This method uses bursts from a powerful 248nm laser to ablate ab·late v. To remove or destroy the function of. ablate to remove, especially by cutting. ablate verb To remove; excise a target. After successfully growing the nanoparticles we test them with an Atomic Force Microscope atomic force microscope (AFM), device that uses a spring-mounted probe to image individual atoms on the surface of a material. Unlike the scanning tunneling microscope, which is also a scanning probe microscope, the AFM can be used on materials that do not conduct , Scanning Electron Microscope scan·ning electron microscope n. Abbr. SEM An electron microscope that forms a three-dimensional image on a cathode-ray tube by moving a beam of focused electrons across an object and reading both the electrons scattered by the object and , X-Ray Diffraction and Raman Spectroscopy. Finally, we measure electrical, magnetic and optical properties using our various existing techniques. * Vera, C., K. Paul, T. Kehl, B. Robertson, G. Mudanda and K. Ghosh. Department of Physics, Astronomy and Materials Science, Southwest Missouri State University Missouri State University is a state university located in Springfield, Missouri. It is the state's second largest university in student enrollment, second only to the University of Missouri. From 1972 to 2005, Missouri State was known as Southwest Missouri State University. . |
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