Theodore Harman

Harman, Theodore 4310883_4275233 TP.jpg

Title: Physicist, Rsearcher
Location: Lincoln, Massachusetts, United States

Theodore Harman, Physicist and Researcher, has been recognized by Marquis Who’s Who Top Scientists for dedication, achievements, and leadership in physics.

Growing up, Mr. Harman looked toward his hero Albert Einstein for direction on what to do in life. He pursued the physics field first at Manchester College, whereupon in 1951 he graduated with an AB in physics, chemistry and mathematics. Following this, he earned a Master of Science in physics form Purdue University in 1953. That same year, he joined the Battelle Memorial Institute as a project leader and spent nearly six years in this role. From there he joined the Lincoln Laboratory at the Massachusetts Institute of Technology. He spent 50 years at the laboratory full-time and several additional years working part-time. During his time there, he spent approximately half his time working on infrared material.

The highlight of Mr. Harman’s career occurred in December 1954 when heI purified indium antimonide and measured a sample with a carrier concentration of 9XE14 cm3 and a carrier mobility of 500000 cm2/v-sec. Up until that time it was generally believed that inter metallic compounds would not be of limited use for applications because of their high carrier concentration, i.e. Pb salts at the 1XE16 cm3 level. In addition to this achievement, Mr. Harman invented the thermoelectric figure of merit measurement technique known as the Harman Method. He also served as the Journal of Electric Materials and has written and edited numerous articles for professional journals and published works. These include the Thermoelectric and Thermomagnetic Effects in 1967 with J.M. Honig and contributing to articles on the preparation and properties of compound semiconductors including high purity indium antimonide, liquidus and solidus lines in semiconductors.

Mr. Harman also holds several patents, including for the method and apparatus for measuring thermoelectric properties US2994818A issued on August 1, 1961; the process for making mercury cadmium Telluride US4642142A issued on February 10, 1987; for superlattice structures particularly suitable for use as thermoelectric materials US5900071A issued on May 4,1999; for lead-chalcogenide superlattice structures US6060657A issued on May 9, 2000; the quantum dot thermoelectric materials and devices US644896B1 issued on September 3, 2002; for superlattice structures for use in thermoelectric devices US6452206B1 issued on September 17, 2002; for the nano structured thermoelectric materials and devices US6605772B2 issued on August 12, 2003; and the thermoelectric device test structure US6856136B2 issued on February 15, 2005.

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