Zero Power Chemical Sensors
Aishwaryadev Banerjee
TL;DR
This paper introduces low-power, highly sensitive chemical sensors based on vertical nanogap tunneling-junctions, demonstrating their effectiveness in detecting organic molecules through electrical measurements.
Contribution
It presents a novel design and fabrication method for batch-produced nanogap sensors with high sensitivity and low power consumption for bio-sensing applications.
Findings
Successful detection of organic molecules via tunneling characteristics
Demonstrated fabrication of vertically stacked gold electrodes with nanogaps
Validated sensor performance for bio-sensing applications
Abstract
We present batch-fabricated, low-power and highly sensitive sensors. We present the design, fabrication, and characterization of batch-fabricated sidewall etched vertical nanogap tunneling-junctions for bio-sensing. The device consists of two vertically stacked gold electrodes separated by a partially etched sacrificial spacer-layer of a-Si and SiO2. Using these devices, we demonstrate the electrical detection of certain organic molecules from measurements of tunneling characteristics of target-mediated molecular junctions formed across nanogaps.
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Taxonomy
TopicsAnalytical Chemistry and Sensors · Mechanical and Optical Resonators · Advanced Chemical Sensor Technologies