Chi Pui Jeremy Wong

7 Questions 12 Answers 0 Followers

Questions related from Chi Pui Jeremy Wong

Is there any work in the literature, which attempts to understand (theoretically) ionization of fragment emitted from polymer surface in ToF-SIMS?

In ToF-SIMS, for metal and semiconductor, electron tunneling model has been used to understand the ionization process, in which electron transfer either from the emitted particle to the the...

07 August 2016 7,093 7 View

Is there any difference between using Gaussian distribution and pseudo Voigt profile in the curve fitting of XPS data?

Recently, I have written a Python program, which can fit the XPS data to a Gaussian distribution. The sample I used in XPS experiment is PMMA. The data were fit well to the Gaussian distribution...

14 June 2015 7,299 2 View

What command do I use when I want to calculate the surface tension on GROMACS?

I have a system with two interfaces, and I would like to calculate the surface tension.

09 October 2014 6,647 1 View

How should I edit the index file for the calculation of order parameter of polymer carbon backbone using g_order on GROMACS?

The gromacs manual says that the order parameter is calculated by inputting the angle between a vector and the z axis into an equation. So, if I would like to calculate the order parameter of the...

23 August 2014 6,033 12 View

How can I plot the energy as a function of torsion angle on GROMACS?

Which command do I need to use? To my knowledge, the g_angle and g_energy commands can only plots the torsional energy as a function of simulation time.

28 July 2014 4,190 1 View

Is there any work in the literature comparing the surface tension of spin-cast thin film of PMMA with different tacticities?

If I prepare thin films of atactic and isotactic PMMA by spin-coating method and measure contact angles of deionized water on these films under room condition, are the contact angles of these two...

24 July 2014 6,497 1 View

How can I use the final structure of one simulation as the initial structure for another simulation on GROMACS?

Say, I have performed a NVT simulation, and have got a trajectory file. After that, I would like to extract the final frame and change the dimension of the system, and use it for another NVT...

20 July 2014 9,818 5 View