25 Questions 9 Answers 0 Followers
Questions related from Yannapol Sriphutkiat
Dear All, I cultured HUVECs in GelMA+Fibrin construct. But when I do the put DAPI in, it stained both HUVECs and Fibrin network. So the DAPI signal from Fibrin disturbs the signal from HUVECs,...
10 December 2018 3,140 3 View
Dear Experts, I have struggled with bonding issue for quite sometime. Initially, I plasma bonded (Oxygen and Nitrogen) the PDMS on LiNbO3. The bonding worked for the 1st time, but after a while...
30 November 2017 2,615 1 View
Dear All, I am looking for broadband transducer (PZT plate) which is working in frequency range of 50-500 kHz. Which manufacturer provide it with quite cheap price ? I just need a few pieces which...
17 March 2017 5,978 3 View
Does any machine measure vibration displacement (freq = 100kHz range, displacement of few micrometers) , except laser doppler vibrometer ? Best Regards,Yannapol S.
16 March 2017 953 5 View
Dear All, I am quite new with vibration displacement. I have seen that some papers used pinducer connected to oscilloscope to measure transducer vibration displacement. If my transducer is...
16 March 2017 8,181 0 View
Dear All, I am quite new with SAW sensor, At first, I have to understand the fundamental principal For SAW mass sensor, What is the physical explanation/mechanism for frequency shift from mass...
25 September 2016 2,897 2 View
Dear All, I observed that each of microparticle seems to rotate (spin) under the actuation of acoustics wave. I am interesting in this phenomena. Is there any publication about this phenomena...
24 March 2016 9,859 2 View
Dear All, I am not sure how can I calculate the number of IDT finger in order to achieve 50 ohm resistance. Let's say my strip width is 50 micron. what should be the number of IDT finger for 50...
25 November 2015 6,310 2 View
Dear All, I have photos of particle accumulation in the bottom of the container. How can I find the accumulation rate ? I know PIV that can measure the velocity of the particle in the flow, but I...
20 October 2015 2,029 2 View
If I have IDT electrode pattern on non-piezomaterial substrate, Can I get the Surface Acoustics Wave which is enough to manipulate fluid or particles ?Best Regards,Yannapol S.
14 October 2015 323 1 View
Dear All, I would like to pattern the electrode on LiNbO3 plate. now I have a mask, but I do not know what chemical can be used to etch the LiNbO3 plate Comparing to Silicon lithography process,...
07 October 2015 3,193 4 View
Dear All, How can I attach PDMS channel with LiNbO3 plate without the O2 plasma machine?The aim is to allow the SAW propagation from LiNbO3 to my channelRegards, Yannapol S.
21 September 2015 6,115 4 View
Dear All,I am going to fabricate IDT for Surface Acoustic Wave, is it possible to to do IDT (finger-cross pattern) with screen printing ?Best Regards,Yannapol S.
09 September 2015 3,543 1 View
Dear All,Just a basic question, For LiNbO3 plate, do cutting axis angle and surface finish affect the propagation direction of the SAW? For example, Y-cut with 128 degree and X-cut 128 degree or...
26 August 2015 468 3 View
Dear All, Anyone knows the way to couple Acoustic to Laminar flow ? The concept is Acoustic Radiation force turns to be -> Acoustic Streaming in Laminar flow that can make the velocity profile...
17 August 2015 2,476 2 View
Dear All, There are various mode of vibration for cylindrical transducer,according to http://www.phy.olemiss.edu/~jgladden/rus/. My transducer has 17mm inner diameter, 1 mm thickness, and 20 mm...
28 July 2015 7,628 3 View
Dear ALL, I would like to generate SAW for my small microchannel (As in the attachment). The media is water and the range of frequency is around 2-30 MHzThe orifice size is around 1 mm, SAW...
27 July 2015 1,314 9 View
Dear All,I started using LabView yesterday.In LabView, How can I create square wave as the control signal ? Is it similar to the PWM (pulse wave modulation) ?Please advise .....Best...
25 March 2015 5,083 11 View
Can anyone tell me how to calculate piezoelectric output vibration (Pressure or force as function of time) from the input voltage?What equation should I use? Best Regards,Yannapol S.
14 March 2015 7,399 7 View
Dear All,I am simulating Fluid Structure interaction. I have followed tutorial https://www.youtube.com/watch?v=oOGkvrnKS-cThis tutorial was set as following .... For Structure,Time step size =...
28 February 2015 6,674 3 View
Hi, has anyone used FSI before? I have an error (see attached). I have tried changing parameters, but I still cannot handle this. "System Coupling run completed with errors. Fluid...
23 February 2015 5,259 7 View
Dear All,I am simulating the deposition/ accretion of the small particle of the nozzle wall. I have stuck this problem a month, I have worked >10 hrs a day , somebody please help me. First, I...
21 February 2015 3,367 4 View
I run the transient study in Fluent and try to open it in CFD Post, but it error Like this. I really don't know How it is happen, I did not interrupt the file during the file was saving. Could you...
20 February 2015 2,066 5 View
Dear All,I would like to ask you, in Fluent Multi-phase flow (Eulerian), How secondary phase block primary phase ? If my have very high fraction of secondary phase, the primary will be blocked or...
18 February 2015 411 3 View
I would like to simulate the clogging of nozzle from the deposition of solid particle, but it seems to be that Comsol consider particle as a point (dimesionless) Therefore, when the particle...
29 January 2015 4,587 3 View
