@inproceedings{05ad1607afcf4418b591f36631a981d3,
title = "A 6.5/17.5-GHz dual-channel interferometer-based capacitive Sensor in 65-nm CMOS for high-speed flow cytometry",
abstract = "In this paper, a dual-channel interferometer-based capacitive sensor with high sensitivity is implemented in 65nm CMOS. Such architecture facilitates high throughput flow cytometry applications using intrinsic EM signatures of biological cells. To enhance SNR, injection-locked oscillator is utilized to perform phase amplification with regard to capacitance-induced frequency shift. Noise from on-chip QVCO is further reduced through I/Q interpolation. Measurements show that the sensor achieves better than 1.5 aF of sensitivity at 250-kHz equivalent noise-bandwidth. With the aid of 3D hydrodynamic focusing, flow cytometry is tested with polystyrene beads. The proposed dual-channel sensor consumes 30 mW under 1 V supply.",
keywords = "capacitive sensor, flow cytometry, injection-locked oscillators, interferometer, microfluidics, permittivity",
author = "Chien, {Jun Chau} and Mekhail Anwar and Yeh, {Erh Chia} and Lee, {Luke P.} and Niknejad, {Ali M.}",
year = "2014",
doi = "10.1109/MWSYM.2014.6848507",
language = "English",
isbn = "9781479938698",
series = "IEEE MTT-S International Microwave Symposium Digest",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2014 IEEE MTT-S International Microwave Symposium, IMS 2014",
note = "2014 IEEE MTT-S International Microwave Symposium, IMS 2014 ; Conference date: 01-06-2014 Through 06-06-2014",
}