Peng Zhang

6 Questions 20 Answers 0 Followers

Questions related from Peng Zhang

Wafer Deformation on an Negative Pressure Adsorption Platform?

The silicon wafer is adsorbed on the platform(fig 1), and an obvious V-shaped depression appears like fig 2. The flatness of the silicon wafer itself does not exceed 2um, and the flatness of the...

07 June 2023 6,031 2 View

Why do I get positive and negative interleaved signals when performing DC on single cells based on the Coulter principle ?

Figure 1 is my single-cell flow resistance detection system based on the Coulter principle. The data acquisition card output 1v DC to one electrode (Ag) of the chip, and the response current is...

19 May 2020 7,414 7 View

Why does the polystyrene microsphere not enter the microchannel from the syringe?

My sample is polystyrene microspheres dispersed in Phosphate-buffered saline( PBS ). Then I use an injection pump to force the sample flow through a microchannel(shows in the figure as follows)....

24 November 2019 1,999 5 View

Why does the polystyrene microsphere not enter the microchannel from the syringe?

My sample is polystyrene microspheres dispersed in Phosphate-buffered saline( PBS ). Then I use an injection pump to force the sample flow through a microchannel(shows in the figure as follows)....

24 November 2019 5,650 5 View

Vibration isolation for precision machinery

I am developing an imaging device, in which a negative pressure pump (KNF negative pressure pump) is used（Fig 1） . The pump causes vibration to the imaging system. If I turn off the pump, the...

01 January 1970 8,599 12 View

The amplitude of the pulse signal from flow resistance only related to the cell volume?

At present, the flow resistance detection method is widely used to count the red blood cells（RBC） and platelets（PLT） in clinical practice. (the principle is shown in Figure 1). The question is,...

01 January 1970 5,348 4 View