Simon Roa

21 Questions 21 Answers 0 Followers

Questions related from Simon Roa

Any tips for the growth of homogeneous ultra-thin metallic films on glass substrates by magnetron sputtering?

Hi everyone. I am looking for some tips for the growth of homogeneous ultra-thin metallic films on glass substrates by magnetron sputtering. My objective is to deposit homogeneous Ag, Cu or Au...

01 December 2021 8,583 5 View

Any recommendation of a book regarding the fundamentals of functional optoelectronic materials?

Any recommendation of a book regarding the fundamentals of functional optoelectronic materials?. Any suggestion or comment is welcome!

27 August 2021 9,490 6 View

Any expert in simulation of thin film solar cells by SCAPS-1D?

Hi everyone, I am looking for an expert in simulation of thin film solar cells by SCAPS-1D software. I am interested in investigating the potential photovoltaic performance of ZnSe/PbSe junctions...

25 July 2021 3,185 3 View

Is AFM-nanoindentation technique appropriate for studying the mechanical properties of shales?

I am trying to study the mechanical properties of shales by Atomic Force Microscopy (AFM) nanoindentation. However, I have had some problems with measurements becuase some minerals (which compose...

29 June 2021 629 4 View

Any good reference describing the Halder-Wagner method in XRD?

I am looking for a reference that exhaustively explains the fundamentals of the Halder-Wagner method to estimate the crystallite size and strain by XRD experiments. Any reference will be appreciated.

28 June 2021 2,837 3 View

How to model viscoelasticity in ABAQUS?

Hi everyone. I am looking for a guide (paper or book) that exhaustively explains how to model viscoelasticity in ABAQUS CAE.

28 June 2021 7,656 2 View

What is the typical magnitude order of the required stress to induce martensitic transformations in Cu-Al-Ni shape memory alloys?

I am interested in studying superelasticity effects in Cu-Al-Ni (thin films) shape memory alloys by AFM-nanoindentation, but I do not know what are the critical stresses required to induce...

25 June 2021 7,640 3 View

What are the typical ranges for indentation hardness and elastic modulus of shales?

Hi everyone. I am thinking in carrying out AFM-nanoindentation experiments in shales. In this context, I would like to know the typical ranges for indentation hardness and elastic modulus of this...

25 June 2021 5,858 2 View

What is the most adequated model for describing viscolesticity in cells?

Hi everyone. I am interested in studying the mechanical behavior of cells using nanoindentation experiments simulated by finite element analysis. Following the literature, cells usually show a...

20 June 2021 5,949 3 View

Are metals like Au, Ag or Cu usually used in MEMS-based technologies?

Are metals like Au, Ag or Cu usually used in MEMS-based technologies?. I would like to know what kinds of metals are usually used for the development of modern MEMS-based technologies (or...

08 June 2021 7,321 1 View

Any record about the application of ZnSe/PbSe heterojunctions in Thin Film Solar Cells?

I have been looking for some references about the application of ZnSe/PbSe heterojunctions in Thin Film Solar Cells (TFSC). Specifically, for TFSC with ZnSe and PbSe thin films synthesized by...

27 May 2021 9,968 5 View

Is Taylor & Francis group a predatory publisher?

I have heard as good as bad commentaries about this scientific publisher. In my case, I feel that the generalized perception is that this publisher is predatory. Can anyone tell me any experience...

19 May 2021 5,087 31 View

Are photoresist films usually adhesive to glass substrates?

I am thinking of implementing an Atomic Force Microscope for nanoindentation-assisted nanolithography experiments and I don´t know if photoresist films are generally adhesive to glass substrates....

11 May 2021 5,327 6 View

Is Scherrer´s equation valid to estimate the crystallite size by XRD patterns analysis?

Hi everyone. I have seen in several papers that Scherrer´s equation is widely used for estimating the crystallite size (from XRD peak broadening) without taking care of its...

01 January 1970 9,872 5 View

Quality or quantity of scientific publications for getting a research-based job?

What aspect is generally more valued in scientific publications if you can get a research-based job: Quality or quantity?. I am currently a PhD student (materials science area), and I would...

01 January 1970 722 3 View

Boosting co-authoring possibilities with other researchers

Hi everyone. I am interested in co-authoring with other researchers to expand my collaboration horizons. In particular, my expertise is associated with depth-sensing indentation tests (micro and...

01 January 1970 3,014 1 View

Dye-Sensitized Solar Cells for real: The Assembly Guide for Making Your Own Solar Cells

I share with the community an interesting report from Solaronix SA (Switzerland) concerning the fundamental aspects of Dye-Sensitized Solar Cells and their fabrication process for real...

01 January 1970 1,856 4 View

Are shunt resistances generally much higher than series resistances in high-fill factor solar cells?

Reviewing some research, I have found that most of the high-fill factor solar cells (FF > 60%) usually present very low series resistance (Rs) concerning the shunt (Rsh) ones. In this context,...

01 January 1970 6,877 3 View

On reasonable peer-review time

I have published in different journals of materials science area from Elsevier, Springer and IOP. In general, the peer-review processes have taken from 6 up to 12 weeks (in the worst of cases). Is...

01 January 1970 1,516 6 View

CuO thin films as potential absorbent layers in Thin Film Solar Cells

Copper Oxide (CuO) can be an interesting material for applications as absorbent layer in Thin Film Solar Cells (TFSCs) becuase of their optimum bandgap (1.2 eV) and intrinsic p-type semiconducting...

01 January 1970 3,477 6 View

Anomalous mechanical behavior in free-standing Cu-Al-Ni shape memory alloy film

Hi everyone, I am looking for an expert in the area of nanomechanical characterization of shape memory alloys who can help me to interpret some weird results. Co-authoring credit will be offered...

01 January 1970 514 2 View