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

How to define the Quartz material in ANSYS ?

Hi Scientists I gonna do a simulation for my device ( with Quartz material, AT-cut type), using ANSYS. But I dont know how to create or define this material in ANSYS ? Hence, I post this my...

09 October 2017 5,644 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

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

Why the results when using wall thickness and when using shell conduction are different in ansys fluent?

Actually, I am running cfd simulation for a heat exchanger which has two fluids one hot and other one is cold fluid. there is a solid domain between them, which I removed and instead I have used...

01 March 2021 9,537 2 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 much pressure we can reduce at the outlet to avoid Reverse Flow?

I am simulating Heat Exchanger. I have tried and tested all the methods to resolve this issue from the internet like refining mesh, improving skewness and orthogonal quality ,extending outlet to...

01 March 2021 6,985 3 View

Timeout error!! Processor in the loop (PIL) using STM32F4 Matlab 2018a?

Dear Researchers I am trying to perform a PIL simulation using STM32F4 Discovery board and comunication serial USB TO TTL. During simulation I receive the following timeout error: An error...

01 March 2021 2,327 1 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 improve and implement WBAN MAC and Radio modules under Castalia 3.2 ?

Hello researchers, Hello Castalia3.2 researchers I am a beginner with Castalia, I work on optimization of RFID systems used in wireless body networks. I simulated a WBAN with 10 nodes and one...

28 February 2021 400 1 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

No title

I am trying to find how to know the density needed for a pva electrospinning in a 0.6mm neddle, the electrospinning will be from top to bottom and the problem I really have is the solution because...

25 February 2021 2,615 3 View