摘要:
Methods for sensing and building sensors provide for adding nanotubes to a sensor to improve characteristics such as the Q-factor associated with the sensor. Mass loading and damping characteristics of micromachined quartz crystal resonators on which a thin film of debundled single-walled carbon nanotube (SWNT) has been deposited are disclosed. An absolute mass sensitivity of ˜100 fg was experimentally measured by monitoring the continuous desorption of gases from SWNT surfaces in a vacuum ambient.
摘要:
Methods, apparatus, and systems to improve thermal sensitivity of resonant circuits. One aspect utilizes tracking near-resonance complex impedance for a quartz resonator based calorimeter sensor to derive ultra-sensitive temperature measurement from the sensor. Another aspect includes a quartz resonant or -based calorimetric sensor placed close to but not touching the analyte being measured to eliminate mass loading effect on the temperature measurement.
摘要:
Methods for sensing and building sensors provide for adding nanotubes to a sensor to improve characteristics such as the Q-factor associated with the sensor. Mass loading and damping characteristics of micromachined quartz crystal resonators on which a thin film of debundled single-walled carbon nanotube (SWNT) has been deposited are disclosed. An absolute mass sensitivity of ˜100 fg was experimentally measured by monitoring the continuous desorption of gases from SWNT surfaces in a vacuum ambient.
摘要:
Methods, apparatus, and systems to improve thermal sensitivity of resonant circuits. One aspect utilizes tracking near-resonance complex impedance for a quartz resonator based calorimeter sensor to derive ultra-sensitive temperature measurement from the sensor. Another aspect includes a quartz resonant or -based calorimetric sensor placed close to but not touching the analyte being measured to eliminate mass loading effect on the temperature measurement.