SAW mass sensor, What is the physical explanation for frequency shift from mass loading effect?

08 September 2016 5,101 3 View

Anyone have done reserach about the rotation of single particle (spinning) by the actuation of surface acoutics wave ?

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...

02 March 2016 2,326 2 View

How can I find exact frequency that my particle in PDMS will lineup ?

Dear All, I have SAW device(Al electrode on LinNbO3) and it was measured by impedance analyzer, Stripwidth= 50 um, resonance frequency = 20.02 MHz. After that I bond PDMS(channel width 100um) on...

01 February 2016 7,083 2 View

How can I do PIV (Particle image velocimetry) ?

Dear All, I have VDO of particle movement in microchannel, but I have no idea how can I start to do PIV ? Should I start by using Matlab...

09 October 2015 7,030 5 View

Should it be an exact SAW wavelength to actuate exact particle diameter?

09 October 2015 854 3 View

How can I find the particle accumulation rate from experiment?

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...

09 October 2015 9,501 3 View

Is there any guideline to design the IDT pattern for SAW?

Dear All, I have read some of the IDT design pattern, normal pattern are finger and void with same distance, but there are also the pattern that the distance between finger is less than the finger...

08 September 2015 1,930 0 View

Is there anyway to control number of cells in droplet?

06 July 2015 3,890 4 View

Why am i getting error in compile UDF DPM tutorial?

Dear All, I am trying to compile the example 2 in http://www.arc.vt.edu/ansys_help/flu...ne_dpm_bc.html but I have found common problem that I have found many times "error C2065: ___________ :...

04 May 2015 1,184 0 View

How can I use workbench with UDF Fluent?

Dear All,I need to use Workbench for FSI, and I have to use UDF in Fluent.Normally, I did 1) open SDK 2)Go to working directory 3)open Fluent 4) open Case 5) Load UDF Then, how can I open...

03 April 2015 9,591 2 View

Is there any tutorial for comsol general projections?

Hi, im trying to make a projection in a 3d comsol model. I have a non uniforme chanel and my intention is to get the average tempreture in the y-z cross section and se the average tempreture...

02 March 2021 4,624 4 View

Is it possible to do piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch?

How to do Piezoelectric coupling in ANSYS-APDL or COMSOL between tapered substrate and rectangular piezoelectric patch? Piezoelectric coupling between the rectangular substrate and rectangular...

02 March 2021 9,833 3 View

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View

Issues with Permeabilization during Flow Cytometry?

Hello Everyone. Currently I am working to characterize macrophages in the myocardium after ischemia-reperfusion injury in rats. Due to the low total cell number isolated from rat hearts I can...

01 March 2021 3,867 3 View

How can i resolve the "final solutuin is not converged" error in Comsol for my heat transfer simulation??

I have been trying to simulate heat transfer problem in Comsol 5.5 for long time but it always throw an error stating: "Failed to find a solution. Maximum number of Newton iterations...

28 February 2021 8,626 3 View

How to use measure capacitance change in COMSOL time dependent study ?

I want to measure change of capacitance due to relative displacement between two parallel plates in COMSOL. Distance between two plates changes with time. So I'm using a time dependent study but...

26 February 2021 8,567 3 View

Why do the air flow results vary totally when adding scalar in CFD ?

Dear All, We are using Autodesk cfd to calculate the air flow in a single sided naturally ventilated room, where air flow depends only on buoyancy due to temperature difference between inside and...

25 February 2021 9,602 4 View

Unknown debris sheets observed in cell culture flasks?

Hi, We culture neural progenitor cells in T175 culture flasks coated with PLO-Laminin. We have successfully grown these cells with our protocol for months. Recently, we observed large sheets...

25 February 2021 3,443 4 View

Error in comsol?

Dear respected researchers, while performing CFD analysis in Comsol it's showing like this Error: Nonlinear solver did not converge. The maximum number of Newton iterations reached can...

24 February 2021 249 3 View

What software programs can directly simulate Additive Manufacturing Directed Energy Deposition (DED)?

I understand there are a lot of software programs that can simulate DED by going through specific modeling, simulation, and commands. For me, that was time consuming and results were not accurate....

24 February 2021 4,428 3 View