| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Outline of Final Research Achievements |
A 2nd-order delta-sigma modulator based on novel dynamic common-source integrators was designed by using 0.35-micron CMOS technology. The low-power operation was demonstrated with a bandwidth of 20 kHz and an effective-number-of-bit (ENOB) of 11.5 bits. A lab-on-a-chip was then fabricated by integrating InAs nanowires with a delta-sigma modulator on the same Si chip. The field-assisted self-assembly was used in the integration process. The nanowire resistance was measured digitally by the modulator. Characteristic responses against acetone, methanol, and water were obtained, indicating a high potential as a low-power and high-sensitive chemical sensor.
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