Fig. 6: Real-time mass detection of particles as they flow through the channel. | Microsystems & Nanoengineering

Fig. 6: Real-time mass detection of particles as they flow through the channel.

From: Measuring nanoparticles in liquid with attogram resolution using a microfabricated glass suspended microchannel resonator

Fig. 6

a (Upper panel) Comparison of frequency shifts when DI water was flowing with an applied pressure difference of 70 mbar (red), and when a solution of 100 nm diameter gold nanparticles was flowing with an applied pressure difference of 500 mbar (blue). (Lower panel) The data obtained after applying a high-pass filter with a cut-off frequency of 10 Hz on the data with nanoparticles flowing through the channel (blue curve in the upper panel). b–e Zoom-in views from a corresponding to particle detection events. The calculated masses and their equivalent Au particle’s diameters are shown, along with the flow rates, estimated from the particle transient time

Back to article page