Patent · US Active

Asymmetric sensor

US10139270B2 · kind B2 · utility

2Cited by

0References

8Claims

0Family size

Assignee

DREXEL UNIVERSITY · US

Inventors

Rajakkannu Mutharasan · Broomall, US
Blake N. Johnson · Philadelphia, US
Ramji Sitaraman Lakshmanan · Dublin, IE
Harsh Sharma · Austin, US

Key dates

Filing date	Jul 7, 2011
Grant date	Nov 27, 2018
Priority date	—
Expiry date	Jun 23, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH10N30/306
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An asymmetric sensor having asymmetric electrodes and/or being asymmetrically anchored provides enhanced sensitivity. In example embodiments, part of the electrode on a sensor is etched or removed resulting in enhanced mass-change sensitive resonant modes. In another example embodiment, a sensor is anchored asymmetrically, also resulting in enhanced mass-change sensitive resonant modes. By asymmetrically anchoring a piezoelectric portion of a sensor, resonant bending modes of the sensor can be measured electrically without external instrumentation. Modifying the electrode of a piezoelectric cantilever enables expression of mass-change sensitive resonant modes that normally do not lend themselves to electrical measurement.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.