Ecole Polytechnique Federale De Lausanne

Ecole Polytechnique Féderale De Lausanne (Epfl)

Hoël Guerin

Mihai Adrian Ionescu

Francesco Bellando

Erick García Cordero

Erick Garcia Cordero

A biosensor includes a source element; a drain element; a semiconductor channel element between the source element and the drain element for forming an electrically conductive channel with adjustable conductivity between the source and drain elements; a first gate element configured to be electrically biased to set a given operational regime of the sensor with given electrical conductivity of the channel; and a second gate element, physically separate from the first gate element, configured to contact a solution comprising analytes allowed to interact with a gate contact surface of the second gate element to generate a surface potential change dependent on the concentration of the analytes in the solution. The channel element is substantially fully depleted allowing the first and second gate elements to be electrostatically coupled such that the surface potential change at the second gate element is configured to modify the electrical conductivity of the channel.

Double-gate field-effect-transistor based biosensor

An on-body wearable bio-fluid collection and sensing device including an interface or interface surface comprising at least one biocompatible material for contacting a bodily part; at least one inlet for receiving the bio-fluid, at least one outlet for evacuating the bio-fluid, a plurality of semiconductor sensors configured to analyze the received bio-fluid, at least one reference electrode for biasing a bio-fluid gate of at least one of the semiconductor sensors, and at least one micro-fluidic or nano-fluidic channel in fluid communication with the at least one inlet, the at least one outlet and the at least one reference electrode; the at least one micro-fluidic or nano-fluidic channel includes the plurality of semiconductor sensors.

Bio-fluid collection and sensing device, system and method

System for monitoring the hydration status of a living being by exploiting the modulation of backscattered RF electromagnetic waves from a wearable patched placed on the skin, said system comprising:

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Lausanne, Switzerland

Hoël Guerin