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oai:www.ideals.illinois.edu:2142/14677 2023-07-10 col_2142_8888 col_2142_5131 com_2142_8887 com_2142_234 com_2142_5130

Bashir, Rashid Bashir, Rashid Suk, Ho-Jun 2010-01-06T16:21:05Z 2010-01-06T16:21:05Z 2010-01-06T16:21:05Z This thesis reports the electric field sensitivity of fluid gated metalsemiconductor hybrid (MSH) Schottky structures consisting of a Titanium layer on ntype GaAs. Compared to standard field-effect sensors, the MSH Schottky structures show 21 times larger resistance change with electric field at -46.6 V/cm. The fluidic gate voltages are mirrored by the metal shunt, resulting in larger depletion widths under the Schottky junction and resistance change as compared to devices with no Schottky junction. Two-dimensional numerical simulation results are in good agreement with the measured data, and a thinner mesa with lower doping density can further increase sensor sensitivity. These metal-semiconductor hybrid (MSH) Schottky sensors are thus very promising for label-free biosensing. Item withdrawn by Mark Zulauf (zulauf@illinois.edu) on 2009-12-08T20:22:30Z Item was in collections: University of Illinois Theses & Dissertations (ID: 1) No. of bitstreams: 2 Suk_Ho-Jun.pdf: 1917479 bytes, checksum: 0ee31879837561aec192e989f8383294 (MD5) Suk_Ho-Jun.doc: 7473664 bytes, checksum: 32f583d6a2107b0ece4d14061a563a1e (MD5) Made available in DSpace on 2010-01-06T16:21:05Z (GMT). No. of bitstreams: 3 license.txt: 4052 bytes, checksum: c998ced949eec64e21e38b32b392dffc (MD5) Suk_Ho-Jun.pdf: 1917479 bytes, checksum: 0ee31879837561aec192e989f8383294 (MD5) Suk_Ho-Jun.doc: 7473664 bytes, checksum: 32f583d6a2107b0ece4d14061a563a1e (MD5) http://hdl.handle.net/2142/14677 en Copyright 2009 Ho-Jun Suk Metal semiconductor hybrid biosensor electric field sensing Schottky junction Fluidic characterization of electric field sensitivity of Ti-GaAs Schottky junction gated field-effect biosensors 2009-12 University of Illinois at Urbana-Champaign Thesis M.S. MS:Electr & Computer Eng-UIUC 10KS1200MS Electrical & Computer Eng 1933 Electrical & Computer Engr 1200