Chemical and Bio-chemical Sensor

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Nanotube-embedded chemical and bio-chemical sensors are being compared to classical capacitive sensors, with a focus on capacitance detection at the nanoscale. Key questions include the tolerance levels for detecting capacitance changes and the effectiveness of these sensors in various applications. The discussion seeks documented data and references, particularly academic papers, on the performance of MOS capacitors with nanotubes versus metal plates. Participants are encouraged to share any relevant findings or resources they have discovered through research. The conversation emphasizes the need for comprehensive information on both traditional and nanotube-based capacitive sensors.
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I was trying to find some information regarding nanotube-embedded chemical and bio-chemical sensors and especially information comparing such sensors to classical capacitive sensors. For example, I need answers to such questions as how can capacitance be detected at the nanoscale? To what tolerance (or percent difference) would such a detector be able to detect the capacitance changes?
I am studying MOS capacitors both that include nanotubes and ones that include metal plates. I am interested in any experimental or documented data available on this topic. Please send me references to papers or books or any other information. Papers are generally preferred. I am also interested in general information about traditional and nanotube capacitive chemical and bio-chemical sensors.
I greatly appreciate your help in advance.
 
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I found several good hits on this one
 

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