Abstract
The present invention relates to methods and devices for determining the weight of small particles, typically being nano-sized particles by use of resonating fibers in the form of elongate members being driven into resonance by an actuator or e.g. thermal noise/fluctuation. The frequency shift in resonance frequency due to depositing of nano-sized particles is correlated with the mass deposited on the elongate member and the vibration frequency of the elongate member is determined by a detector. The read-out from the detector is transformed into a mass deposited on the elongate member. Particles are deposited by letting a fluid with the particles flow past the elongate member.
| Original language | English |
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| IPC | G01N 9/00 |
| Patent number | WO2013/064157 |
| Filing date | 10/05/2013 |
| Country/Territory | International Bureau of the World Intellectual Property Organization (WIPO) |
| Publication status | Published - 2013 |