申请人:Incorporated National University Iwate University
公开号:US20140234171A1
公开(公告)日:2014-08-21
A separate excitation and high sensitive resonant type mass sensor is provided. The resonant type mass sensor
1
includes: an oscillator
3;
an vibrator
2
placed on the oscillator
3;
and a detecting unit
5
for detecting the resonant frequency of the vibrator
2,
and is characterized in that the vibrator
2
and the oscillator
3
are not coupled mechanically and that the vibrator
2
is not mechanically coupled to any members. The vibration of the vibrator
2
is represented by a standing wave. The vibrator
2
includes a molecular recognition means for recognizing the molecules of a substance to be measured. The molecular recognition means may collect specific molecules by antigen-antibody reaction. The vibrator
2
may include at least a magnetizable part. To the magnetizable part, magnetic beads
26,
to which an antibody or antigen is immobilized, may be adsorbed magnetically. The detecting unit
5
is made up of a light-emitting device and a photo-sensitive device, and may include a means to detect any one of frequency, displacement, velocity, and acceleration.