Why can I not use mathematic expression with "j" ( complex number) in MathCAD ?

10 November 2018 4,907 1 View

Which is type of "selective switch valve" for microfluidic application ?

Hi all experienced scientists I am doing a sensing measurement based on microfluidic device. As I sketched in my attached file, I have one buffer solution (PBS) and nearly 8 bacteria samples....

07 August 2018 7,478 0 View

Is N-methacryloyl l-histidine methylester (MAH) still available ?

Hi all scientist I am doing my research work related to polymer, so I need to use N-methacryloyl l-histidine methylester (MAH) chemical. Unfortunately, I can not find any supplier for it. Does...

05 June 2018 8,348 0 View

Why the MIP layer was cracked under UV-exposing ?

Hi everyone I am doing with MIP technique now and, I tried to following to attached paper for MIP chemicals and protocols. To practice MIP, I tried to coat a thin layer of polymer solution on a...

02 March 2018 4,816 0 View

Etching AT-cut type of Quartz Wafer ?

Hi all scientists I am gonna do a etching process with AT-cut Quartz wafer for my QCM sensor. My plate thickness is 160um, and its shape is 200 x 200 mm. Etching area will be circular shape with...

11 December 2017 9,409 0 View

How to double-side mask aligment for 1 inch wafer ?

Hi all I need to fabricate my device on quartz wafer with 1 inch in diameter and both electrodes on top and bottom side must be high concentric. So I need do this work on double-side mask...

09 October 2017 181 0 View

Implementation of PDE equation in COMSOL ?

08 September 2017 6,808 0 View

Can I apply Matthieu equation for the rectangular plate?

Hi Scientist I am doing a design my sensor based on the rectangular quartz plate. I reviewed some paper about introduced Mathieu equation for analysing the vibration of the plate, but all plate in...

08 September 2017 3,890 0 View

Which type of OTA have "negative transconductance " ?

08 September 2017 7,803 11 View

Help me to clear problem in frequency domain (COMSOL) ?

Hi all I have a problem with eigenfrequency and frequency domain, I hope someone can help me to clear I using PDE Coefficient form, and solve my problem in 2D, with independent variable (u) =...

08 September 2017 202 1 View

What is the most Operating System (OS) which can be INSTALL on Tiny hard devices like Raspberry Pi (RPi) hardware ?

I'm targeting to deploy a mesh network and manually configure MANET routing protocols. I'm preparing scenarios, architectures, and hard devices needed to do that. Are there some step-by-step...

03 March 2021 1,931 5 View

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 3 View

How can I integrate a routing protocol in a tiny device (e.g. Raspberry Pi)?

Hi Community, I'm facing the issue of integration/compiling a new routing protocol in a WSN simulator. The final goal is to successfully add, configure this routing protocol in hardware devices...

01 March 2021 9,332 6 View

How to show arrows over the streamlines in CFD-post?

I follow this to make streamlines like the photos attached below: (software- CFD post-processing) First I plot the 2D streamline over a surface "streamline 1". them I plot a vector by the...

01 March 2021 8,668 3 View

Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS?

I need to model masonry and reinforced concrete minarets for my MSc thesis. Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS? (Or any other program for just...

01 March 2021 736 3 View

Can Virtual Servers (remote dekstop manager) run heavy ANSYS Fluent CFD simulation ?

I have a virtual machine. My host Pc specs are not that good thats why i went for virtual servers. so basically my host pc has 8gb of ram with nvidia quadro k2200 4Gb DDR5 GPU ,processor intel...

01 March 2021 8,415 1 View

How to increase mesh quality of a cfd model in ansys fluent?

How can one improve mesh skewness, orthogonality, aspect ratio?

28 February 2021 7,730 3 View