I need to simulate a working gas sensor in COMSOL. What are the variables that I must know about the sensing materials? Which module do I use to begin with?
Dear Researchers, I have my samples SnO2 doped with with Cu (1, 2, & 4%). The peak intensity reduces in XRD for 1 and 2%. However, for 4% additional peaks appears which I believe is due to...
05 June 2019 4,806 3 View
Dear Researchers, Since CNT is not soluble in standard solvents like DI water, ethanol etc, how do I make a doping/composite of CNT and metal oxide. Your suggestions will be highly appreciated....
05 June 2019 6,386 2 View
I have quantum dots dispersed a solvent. If I am considering 2 ml of the solvent, then how do I find out how much is the amount of sample in that solvent? I tried drying the sample to obtain...
03 April 2019 4,333 8 View
Some literature and RG search mentions a acid solution for dissolving Co3O4 and NiO. Also, for Co3O4 I tried a basic medium of pH 10, but was unable to dissolve. I am not sure incase I am using...
10 November 2018 4,297 0 View
Dear Sir/Mam, Considering the scale, we measure the distance between the centre and the bright spot of the diffraction pattern. This should tally with the reciprocal of the d-spacing and the...
07 August 2018 3,371 2 View
Kindly let me know the details along with an image of a high temperature hydrothermal reactor operating at 400c to 500c. Thanks and regards
06 July 2018 5,765 3 View
Dear Sir/Mam, I have synthesized some quantum dots suspended in solvent (DI water) . I am interested in finding the size of those dots. One way would be offcourse HRTEM. But I am interested in...
05 June 2018 8,740 3 View
I am interested in synthesizing Graphene Oxide but not by Hummers method. If any one can suggest from his/her expertise. Also, does other method or even Hummer method ensure a good quality. Also...
05 June 2018 2,962 0 View
Dear Sir/Mam/Colleague, What kind of Screen Printers do I use to deposit thin films? If possible provide me with a link of the description of the instrument. Also, what will be the approximate...
09 October 2017 9,136 0 View
I worked on metal oxides and its application for gas sensors. Now I intend to write a project, and found Bio-sensors (using metal oxide) as a very interesting project. My doubt lies, whether the...
07 August 2017 5,478 0 View
When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.
16 June 2021 0 0 View
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
Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...
02 March 2021 2,431 3 View
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
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
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
I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...
01 March 2021 6,661 3 View