Pressure sensor at the microscale
Pressure sensor at the microscale
(OP)
Hello all,
I am looking for a probe that detects force and converts it to a pressure reading. I would be using it for measuring the pressure of single cells of a multicellular organism, at specific points on the cell, So we are talking about a pressure sensor attached to a micro or nano pipette, with a sensor attached to the tip no larger than 10-20 microns. If anyone could guide me in the right direction or give me any advice, it would be appreciated.





RE: Pressure sensor at the microscale
https://en.wikipedia.org/wiki/Atomic_force_microsc...
RE: Pressure sensor at the microscale
They can control the airflow (HVAC)through an open doorway.
Recall 1 ATM = 1.03 x 10^^5 Pa so this "pressure" is next to nothing.
Googling "Pa" or force and sensor will probably get you what you want.
RE: Pressure sensor at the microscale
Amorrison, I have searched and found a few companies, some of which I still have to call, and others of which must get back to me. The only problem is that their sensors are not on a small enough probe to be useful for me. It is not only about sensitivity, but size is also very important.
I just though someone here would have come across something similar to what I am looking for.
RE: Pressure sensor at the microscale
How do you propose to seperate the force applied in manipulating the probe (which will have to be reacted by contact with the organism) from internal pressure of the organism? Can you puncture the organism allowing the pressure to be sensed at right angles to the probe force?
One alternative is to use a passive probe tip of known geometry and measure force vs displacement as the probe contacts the organism. This will give you a pseudo "elastic modulus" for the region being investigated.
Link
5 x 10^-9 N (resolution of the smallest sensor in the link) on a tip 20 uM diameter is equivalent to 16 Pa.
je suis charlie
RE: Pressure sensor at the microscale
RE: Pressure sensor at the microscale