Abstract
The authors report a sensing scheme to detect the translocation of small particles through a fluidic channel. The device connects the gate of a metal oxide semiconductor field effect transistor (MOSFET) with a fluidic circuit and monitors the FET's drain current to detect particles. They demonstrate that amplification can be achieved from both the fluidic circuit and the MOSFET. The results show that a 0.7% volume ratio of the particle to the sensing microchannel can lead to 28%-56% modulation of the MOSFET's drain current. The minimum volume ratio detected is 0.006%, which is about ten times smaller than the lowest detectable volume ratio reported in the literature.
Original language | English |
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Article number | 013901 |
Journal | Applied Physics Letters |
Volume | 91 |
Issue number | 1 |
DOIs | |
Publication status | Published - Nov 19 2007 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)