US Patent:
20110203367, Aug 25, 2011
Inventors:
Michael Huang - San Jose CA, US
Mengya Wu - Santa Clara CA, US
Mengyou Wu - Santa Clara CA, US
Assignee:
MicroPoint Bioscience Inc. - Santa Clara CA
International Classification:
G01N 9/00
G01N 29/02
G01N 11/16
G01G 9/00
US Classification:
73 32 R, 73 6453, 73 5441, 73865
Abstract:
This invention provides methods and devices to measure physical characteristics of sample fluids. Samples are introduced into a sample chamber in contact with a mechanically oscillating working member. The vibrations are received by a piezoelectric sensor transducer and correlated to a sample characteristic, such as viscosity or density. The devices include a sample chamber in contact with one or more working members actuated by a piezoelectric actuator and/or monitored by a piezoelectric sensor.