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Snapshots of The Research Projects

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Overview Of My Research Interests And Current Projects

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Snapshots of The Research Projects

  1. 1. Overview of Arvind’s Research Interests & Current Projects Arvind K. Srivastava Institute for Nanotechnology Materials Science and Engineering Northwestern University Website: http://vpd.ms.northwestern.edu/memberpages.asp?url=members/arvind/arvind.htm Microsensors & MEMS Arrays 5V 5V Bio-inspired Computation 12V GND C20 C21 C22 C23 C24 GND MFC Diagnostic MFC Diagnostic + + MFC Settings + MFC Settings + U13 C25 0.01uF + + 1 uf 1 uf 1 uf -2.4V 1 20 -2.4V 0.01uF C26 U14 1 uf 1 uf -2.4V VREFL1 VREFL2 +2.4V 2 19 +2.4V 0V 1 20 0V 2.4V -5V 3 VREFH1 VREFH2 VOUTA VOUTH 18 F0A 5V 2 VREFL1 VREFL2 VREFH1 VREFH2 19 5V C28 6 4 17 3 18 0.01uF VOUTB VOUTG F1A VOUTA VOUTH MFC3 CH3OH 0.01uF 5 16 4 17 -5V VOUTC VOUTF F2A VOUTB VOUTG MFC4 C27 6 15 5 16 VOUTD VOUTE F3A VOUTC VOUTF 12V 7 14 -5V 6 15 (0 - 5V) 8 VDD VSS 13 (+/-2.4V) 12V 7 VOUTD VOUTE 14 0V 200nm DIO0_ SDI LD VDD VSS 9 12 8 13 DIO1_ CLK CLR SDI LD 10 11 9 12 DIO2_ DIO3_ CLK GND1 10 CLK CLK CLR GND1 11 4 2 DAC8800 F4A DAC8800 F5A PELT F6A MFC0 Zn-SnO2 C2H5OH C29 0V 1 U15 20 0V 0.01uF C30 F7A (+/-2.4V) MFC1 MFC2 C lu s t 5V 2 VREFL1 VREFL2 19 5V U16 (0 - 5V) 0.01uF 3 VREFH1 VREFH2 VOUTA VOUTH 18 F0B DIO10_ 1 A Y0 15 CS0_FG 2 PCA1 4 17 2 14 5 6 VOUTB VOUTC VOUTG VOUTF 16 15 F1B F2B DIO11_ DIO12_ 3 B C Y1 Y2 13 12 CS1_FG CS2_FG Gr VOUTD VOUTE F3B Y3 CS3_FG 12V 7 14 0V 6 11 8 VDD SDI VSS LD 13 (0 - 5V) 4 G1 G2A Y4 Y5 10 CS4_FG CS5_FG 5 C2H5CO 9 12 5 9 10 CLK CLR 11 G2B Y6 7 CS6_FG 3 6 CLK GND1 Y7 CS7_FG 0 1 DAC8800 F4B 74LS138 U17 Scan and Data Acquisition Scan and Data Acquisition F5B 1 4 0.01uF F6B 2 1R 1Q F0CAP_ 5 PCA2 F7B 1S1 4 Cd-SnO2 C32 U18 C31 3 7 1S2 2Q F1CAP_ 0V 1 20 0V (0 - 5V) 5 5V 2 VREFL1 VREFL2 19 5V 6 2R 9 95nm 200nm -2 VREFH1 VREFH2 2S 3Q F2CAP_ 0.01uF 3 18 10 4 CHCl3 VOUTA VOUTH IME0 3R 4 17 11 13 5 6 VOUTB VOUTC VOUTG VOUTF 16 15 IME1 IME2 12 14 3S1 3S2 4Q F3CAP_ 6 VOUTD VOUTE IME3 4R Function 2 12V 7 14 0V 15 VDD VSS 4S 8 9 SDI LD 13 12 (0 - 5V) 74LS279 3 10 CLK CLR 11 CLK DAC8800 GND1 IME4 1 U19 4 -4 IME5 1R 1Q F4CAP_ IME6 U20 2 1S1 2 C6H6 1 15 3 7 IME7 A Y0 1S2 2Q F5CAP_ 2 14 5 (0 - 5V) 3 B Y1 13 6 2R 9 C Y2 2S 3Q F6CAP_ 12 10 DIO4_ DIO5_ 6 Y3 Y4 11 10 11 12 3R 3S1 4Q 13 F7CAP_ -6 1 DIO6_ G1 Y5 3S2 4 9 14 DIO_7 5 G2A G2B Y6 Y7 7 15 4R 4S -8 -6 -4 -2 0 2 4 6 8 74LS138 74LS279 DIO7_ 30nm 5 µm DIO8_ U21 Title 200nm Grain Neck 2 3 A Y0 4 5 Interface Circuit-A F u n c tio n 1 Sensor Selection & Diagnostics B Y1 + 6 Size Document Number Rev 1 Y2 7 A Center for Bioelectronics, Biosensors and Biochips (C3B), VCU 1.6 Temperature Settings Sensor Selection & Diagnostics Temperature Settings DIO_9 G Y3 74LS139 Date: Monday, March 29, 2004 Sheet 1 of 26 Nanopatterning & Nanometrology Signal Processing & Embedded Systems
  2. 2. Mimicking Sense of Olfaction – Basis of my research Our nose has millions of tiny sensory Our nose has millions of tiny sensory elements (called olfactory receptors). elements (called olfactory receptors). Olfactory When we inhale odor molecules, they get When we inhale odor molecules, they get receptors attached to the receptors and activate attached to the receptors and activate olfactory neurons through which odor olfactory neurons through which odor signals are transmitted to the brain for signals are transmitted to the brain for identification. identification. Interesting thing about these olfactory Interesting thing about these olfactory cells is that none of these cells is specific cells is that none of these cells is specific to any gas, even though we have to any gas, even though we have remarkable sensing capability. remarkable sensing capability. Human being can distinguish over 10,000 Human being can distinguish over 10,000 different odor molecules at the different odor molecules at the X1j ACTIVE V1j(t) KNOWLEDGE concentration down to one part per million SENSOR MATERIAL TRANSDUCER PROCESSOR BASE concentration down to one part per million (k classes) (1 in 106), whereas dogs have sensing (1 in 106), whereas dogs have sensing V2j(t) X2j capability nearly 100 million times lower ACTIVE SENSOR TRAIN TEST capability nearly 100 million times lower TRANSDUCER OUTPUT than ours. INPUT MATERIAL PROCESSOR ARRAY PARC PREDICT than ours. PROCESSOR ODOUR Xj ENGINE OR Class V3j(t) (j) ACTIVE SENSOR (j) TRANSDUCER MATERIAL PROCESSOR X3j To mimic biological olfaction into To mimic biological olfaction into electronics, so called Electronic Nose electronics, so called Electronic Nose (ENOSE), what we essentially need is an (ENOSE), what we essentially need is an V4j(t) X4j array of sensors with partial overlapping ACTIVE TRANSDUCER SENSOR array of sensors with partial overlapping PROCESSOR sensitivity followed by suitable data ? MATERIAL sensitivity followed by suitable data Class Class processing and pattern recognition tool. processing and pattern recognition tool. 1 2 Active Site Class Gas Sensitive Material e- Exchange 3 Materials Science Device Physics Signal Processing Data Analysis and Pattern Recognition ENOSE – An Interdisciplinary Research Subject

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