A Fringe Field Shaping Cmos Capacitive Imaging Array

• doi: 10.1109/SENSORS47087.2021.9639495
• title: A Fringe Field Shaping CMOS Capacitive Imaging Array
• publisher: IEEE
• isbn: 978-1-7281-9502-5
• issn: 1930-0395
• rank: 715
• access_type: LOCKED
• content_type: Conferences
• abstract: While classical electrochemical impedance spectroscopy (EIS) focuses on measurements from a single working electrode, dense active microelectrode arrays offer opportunities for new modes of sensing. Here we present experimental results with an integrated sensor array for electrochemical imaging. The system uses a 100 × 100 custom CMOS electrode array with 10 µm × 10 µm pixels, which measures impedance at frequencies up to 100 MHz. The sensor chip is uniquely designed to take advantage of the electrostatic coupling between groups of nearby pixels to re-shape the local electric field. Multiple bias voltages and clock phases create new types of signal diversity that will enable enhanced sensing modes for computational imaging and impedance tomography.
• article_number: 9639495
• pdf_url: https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=9639495
• html_url: https://ieeexplore.ieee.org/document/9639495/
• abstract_url: https://ieeexplore.ieee.org/document/9639495/
• publication_title: 2021 IEEE Sensors
• conference_location: Sydney, Australia
• conference_dates: 31 Oct.-3 Nov. 2021
• publication_number: 9639447
• is_number: 9639235
• publication_year: 2021
• publication_date: 31 Oct.-3 Nov. 2021
• start_page: 1
• end_page: 4
• citing_paper_count: 3
• citing_patent_count: 0
• download_count: 313
• insert_date: 20211217
• index_terms:
  • ieee_terms:
    • Image sensors
    • Semiconductor device measurement
    • Microelectrodes
    • Impedance measurement
    • Tomography
    • Sensors
    • Frequency measurement
  • author_terms:
    • biosensor
    • capacitance
    • impedance
    • electrochemical
    • image sensor
    • CMOS
    • dielectric spectroscopy
    • array
    • computational image sensor
  • dynamic_index_terms:
    • Electrochemical Impedance Spectroscopy
    • Bias Voltage
    • Working Electrode
    • Computer Image
    • Image Calculator
    • Electrode Array
    • Microelectrode Arrays
    • Multi-electrode Array
    • Group Of Pixels
    • Impedance Tomography
    • Clock Phase
    • Complexity Measures
    • Switching Frequency
    • Electrochemical Impedance Spectroscopy Measurements
    • Central Pixel
    • Simulated Electric Field
    • Phase Offset
    • Output Pixel
    • Readout Circuit
• isbn_formats:
  • format: Print on Demand(PoD) ISBN, value: 978-1-7281-9502-5, isbnType: New-2005
  • format: Electronic ISBN, value: 978-1-7281-9501-8, isbnType: New-2005
• authors:
  • Author Name: Kangping Hu
    Affiliation: School of Engineering, Brown University, Providence, RI, USA
    Author URL: https://ieeexplore.ieee.org/author/37087111690
    ID: 37087111690
    Order: 1
    Author Affiliations:
    • School of Engineering, Brown University, Providence, RI, USA
  • Author Name: Christopher E. Arcadia
    Affiliation: School of Engineering, Brown University, Providence, RI, USA
    Author URL: https://ieeexplore.ieee.org/author/37086616752
    ID: 37086616752
    Order: 2
    Author Affiliations:
    • School of Engineering, Brown University, Providence, RI, USA
  • Author Name: Jacob K. Rosenstein
    Affiliation: School of Engineering, Brown University, Providence, RI, USA
    Author URL: https://ieeexplore.ieee.org/author/37945044700
    ID: 37945044700
    Order: 3
    Author Affiliations:
    • School of Engineering, Brown University, Providence, RI, USA

Image Sensor

• sensor_type: CMOS
• resolution: 100 × 100 pixels
• dynamic_range: Not specified, but noise performance is mentioned with a RMS noise of 0.6 attofarads for a 1 kHz measurement bandwidth
• pixel_size: 10 µm × 10 µm
• dark_current: Not specified

Optical Data

• focal_length: Not specified
• aperture: Not specified
• field_of_view: Not specified
• distortion: Not specified

Performance Metrics

• frame_rate: 500 kS/s
• power_consumption: 24.5 mW
• noise: 1/f noise

Applications & Benefits

• cell_imaging: The sensor can perform electrochemical impedance spectroscopy for applications in cell imaging and analysis.
• benefits: Enhances sensing performance through fringe field shaping capabilities.

Supporting Organizations

• supported_by: DARPA, National Science Foundation under Grant No. 2027108.

Manuscript Details

• publication_date: 31 Oct.-3 Nov. 2021

Relevancy Score

• score: 8
• missing_fields:
  • fill factor
  • quantum efficiency
  • readout speed
  • temporal noise
  • fixed-pattern noise
  • microlenses
  • on-chip colour filters
  • global or rolling shutters
  • backside illumination

Processed JSON Filename

request_16c4fa85-a063-48db-b4ec-4aba2ec13799-a_fringe_field_shaping_cmos_capacitive_imaging_array.json