title: A photovoltaic-driven and energy-autonomous CMOS implantable sensor.
abstract: An energy-autonomous, photovoltaic (PV)-driven and MRI-compatible CMOS implantable sensor is presented. On-chip P+/N-well diode arrays are used as CMOS-compatible PV cells to harvest μW's of power from the light that penetrates into the tissue. In this 2.5 mm × 2.5 mm sub-μW integrated system, the in-vivo physiological signals are first measured by using a subthreshold ring oscillator-based sensor, the acquired data is then modulated into a frequency-shift keying (FSK) signal, and finally transmitted neuromorphically to the skin surface by using a pair of polarized electrodes.
authors.affiliation: Electrical and Computer Engineering Department, The University of Texas at Austin, Austin, TX 78712 USA. ayaz@mail.utexas.edu
authors.forename: Sahar
authors.initials: S
authors.lastname: Ayazian
authors.forename: Vahid A
authors.initials: VA
authors.lastname: Akhavan
authors.forename: Eric
authors.initials: E
authors.lastname: Soenen
authors.forename: Arjang
authors.initials: A
authors.lastname: Hassibi
mesh_terms: D001672:Biocompatible Materials; D001698:Biomedical Engineering; D003201:Computers; D011211:Electric Power Supplies; D004566:Electrodes; D004581:Electronics; D004867:Equipment Design; D006801:Humans; D008027:Light; D009991:Oscillometry; D019736:Prostheses and Implants; D012815:Signal Processing, Computer-Assisted; D012867:Skin / Q000473:pathology*; D012993:Solar Energy; D059015:Wireless Technology
chemical_list: D001672:Biocompatible Materials