TY - GEN
T1 - Optomechanical viscometer
AU - Han, K.
AU - Zhu, K.
AU - Bahl, G.
N1 - Funding for this research was provided through a University of Illinois Startup Grant. Travel support has been generously provided by the Transducer Research Foundation. We would like to acknowledge stimulating discussions and guidance from Prof. Rashid Bashir, Prof. Randy Ewoldt, Prof. Taher Saif, and Prof. David Saintillan.
PY - 2014
Y1 - 2014
N2 - Recently, the first microfluidic optomechanical device driven by radiation pressure – and capable of operating with non-solid states of matter (viscous fluids, bioanalytes) – was demonstrated. Here we show that the vibrational noise spectrum of the device mechanical modes enables quantification of the viscosity of fluids inside the device. A linear relation between the spectral linewidth and square root of viscosity is predicted and experimentally measured in the low viscosity regime. For the first time, an all-optical sensor of liquid viscosity using a microfluidic optomechanical resonator is demonstrated. Our result is a step towards performing high-frequency studies of fluids and boundary layer viscosities, and performing high-throughput viscoelastic measurements on flowing cells.
AB - Recently, the first microfluidic optomechanical device driven by radiation pressure – and capable of operating with non-solid states of matter (viscous fluids, bioanalytes) – was demonstrated. Here we show that the vibrational noise spectrum of the device mechanical modes enables quantification of the viscosity of fluids inside the device. A linear relation between the spectral linewidth and square root of viscosity is predicted and experimentally measured in the low viscosity regime. For the first time, an all-optical sensor of liquid viscosity using a microfluidic optomechanical resonator is demonstrated. Our result is a step towards performing high-frequency studies of fluids and boundary layer viscosities, and performing high-throughput viscoelastic measurements on flowing cells.
UR - https://www.scopus.com/pages/publications/85061930117
UR - https://www.scopus.com/pages/publications/85061930117#tab=citedBy
U2 - 10.31438/trf.hh2014.68
DO - 10.31438/trf.hh2014.68
M3 - Conference contribution
AN - SCOPUS:85061930117
T3 - Technical Digest - Solid-State Sensors, Actuators, and Microsystems Workshop
SP - 255
EP - 257
BT - 2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014
A2 - Allen, Mark G.
A2 - Mehregany, Mehran
PB - Transducer Research Foundation
T2 - 2014 Solid-State Sensors, Actuators and Microsystems Workshop, Hilton Head 2014
Y2 - 8 June 2014 through 12 June 2014
ER -