US 11,898,844 B2
Shear wave methods, systems, and gyroscope
Amit Lal, Ithaca, NY (US); Benyamin Davaji, Ithaca, NY (US); and Visarute Pinrod, Ithaca, NY (US)
Assigned to Cornell University, Ithaca, NY (US)
Filed by CORNELL UNIVERSITY, Ithaca, NY (US)
Filed on Oct. 5, 2020, as Appl. No. 17/063,179.
Claims priority of provisional application 62/909,912, filed on Oct. 3, 2019.
Prior Publication US 2021/0293541 A1, Sep. 23, 2021
Int. Cl. G01C 19/5698 (2012.01); H05K 1/03 (2006.01); H05K 1/02 (2006.01)
CPC G01C 19/5698 (2013.01) [H05K 1/0296 (2013.01); H05K 1/0306 (2013.01); H05K 2201/0175 (2013.01); H05K 2201/09227 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A rotation sensor, comprising:
a substrate having a top surface and an interior bottom surface;
an electrode module positioned on the top surface of the substrate and comprising:
a first set of electrodes configured to generate a bulk acoustic wave directly into the substrate, wherein at least a portion of the bulk acoustic wave is transduced into a shear wave upon reflection on the interior bottom surface of the substrate without use of a reflector;
a second set of electrodes configured to detect the shear wave; and
a controller in communication with the first set and second set of electrodes and configured to determine, based on the detected shear wave, an effect of Coriolis force on the sensor.