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Near field sub-THz array sensor in CMOS circuit for cell detection was developed as a tool to collect quantitative cellular property. More than 1400 number of LC oscillators designed at 60 GHz are arranged in 2 dimensions periodically, and resonance frequency of each oscillator shifts by dielectric target. In simulation and experiment, frequency shifts of the CMOS sensor agreed well with dielectric constant change of water and solution on the surface. Growth of bacterial colonies was monitored successfully. Moreover, significant difference of frequency shifts was demonstrated among NHDF and HeLa, normal and cancer human cell respectively, and liquid medium. |
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Dielectrics
Near field
Sensors
Molecules
CMOS sensors
Oscillators
Terahertz radiation
