Details

Autor(en) / Beteiligte

• Gil-Santos, Eduardo
• Baker, Christophe
• Dac Trung Nguyen
• Hease, William
• Gomez, Carmen
• Lemaitre, Aristide
• Ducci, Sara
• Leo, Giuseppe
• Favero, Ivan

Titel

Nano-optomechanical disk resonators operating in liquids for sensing applications

Ist Teil von

• 2016 IEEE 29th International Conference on Micro Electro Mechanical Systems (MEMS), 2016, p.238-241

Ort / Verlag

IEEE

Erscheinungsjahr

2016

Quelle

IEEE Electronic Library (IEL)

Beschreibungen/Notizen

• We demonstrate that miniature optomechanical disk resonators can operate in liquids as ultrafast and ultrasensitive densimeters, viscometers and mass sensors. We develop numerical and analytical models that describe the fluid-structure interactions at play around these GHz mechanical devices. We test them experimentally by immersing disks of varying dimensions in four distinct liquids of varying density and viscosity. Using optomechanical techniques, we measure the thermomechanical noise spectrum of a disk vibrating in water at 1.3 GHz. The resonator stability measured in liquids, together with the models, allows estimating the limits of detection for mass deposition, and for density and viscosity analysis; beating current technologies by several orders of magnitude.