Patent ID: 8241913
Filing Date: 2012-08-14
Classification: G01N,H01L,Y10T

Abstract:
1. A method comprising: analyzing a biological product at a top gate of a multiple-gate field-effect transistor (MUGFET), wherein the MUGFET includes: a first lateral gate and a second lateral gate disposed on opposite sides of a semiconductive well; a top gate and a bottom gate disposed respectively above and below the semiconductive well, wherein the top gate contains a capture molecule disposed within the top gate and an electrically conductive fluid to receive a biological product and; a source region and a drain region disposed on opposite sides of the semiconductive well; a patterned depletion zone between the first and second lateral gates, wherein the patterned depletion zone includes a first width; and a virtual depletion zone imposed in the semiconductive well, wherein the virtual depletion zone includes a second width that is less than the first width, and wherein analyzing includes detecting a voltage proportional to the presence of the biological product in the electrically conductive fluid of the top gate.