The "Plastic Retina": Image Enhancement Using Polymer Grid Triode Arrays

Alan J. Heeger, David J. Heeger, John Langan, Yang Yang

Research output: Contribution to journalArticlepeer-review


An array of polymer grid triodes (PGTs) connected through a common grid functions as a "plastic retina" which provides local contrast gain control for image enhancement. This device, made from layers of conducting polymers, functions as an active resistive network that performs center-surround filtering. The PGT array with common grid is a continuous analog of the discrete approach of Mead, with a variety of fabrication advantages and with a significant saving of "real estate" within the unit cell of each pixel.

Original languageEnglish (US)
Pages (from-to)297-305
Number of pages9
JournalACS Symposium Series
StatePublished - 1997

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


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