What is the relationship between the number of defects in graphene and its band-gap?

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I want to buy Hydrothermal Synthesis Autoclave from any European company. Can anyone suggest any company inside Europe?

Thanks

22 July 2024 1,143 3 View

Figure plot in scientific articles?

Hi all, Do you know how to plot this figure? I found many of them in Nature journals but have not figured out how to make them. Which software/tool do you suggest? Thank you very much.

15 July 2024 8,384 2 View

How to use stress and displacement results from 1st stationary simulation as initial conditions for 2nd eigenfrequency simulation in COMSOL?

Dear All, I am trying to define the dispersion curves of a periodic unit cell in COMSOL Multiphysics with prescribed displacements. I am using two separate studies: - Study 1: Stationary, with...

13 July 2024 7,855 1 View

Can we use 30%hydrogen peroxide for catalse activity? If can, then why?

The question us regarding catalase activity check of bacterial strains. I saw an article in which it was written that we can use 30%hydrogen peroxide for catalase activity but in our laboratories...

12 July 2024 8,794 2 View

How to prepare materials before protein-peptide or protein-protein docking?

Hi all, I am conducting research on screening peptides (20-35 amino acids) with potential for treating dengue fever through protein-peptide docking methods. In the protein database, I found the...

10 July 2024 8,037 1 View

Why does my protein bind poorly to the Ni sepharose beads?

I am purifying RNAse E in E. coli (118 kDa). I cloned the rne coding sequence on pET28a with a His tag at the N-terminus. The protein overexpressed fine (see attached figures). The binding buffer...

24 June 2024 6,287 4 View

Best plant growth regulator combination for meristem culture?

Does anyone have experience with plant meristem culture? What kind of plant growth regulator combination is best? From what I read, there seem to be 2 methods. One using cytokinin (BAP, kinetin)...

08 June 2024 7,877 2 View

Why is Trichoderma harzianum producing yellow pigment on rice broken at fermentation?

i have a species trichoderma harzianum. It is development in PDA media normally. But it is producing yellow pigment on rice broken at fermentation.

31 May 2024 9,260 0 View

How to find the mass effective density using COMSOL Multiphysics?

Hi everyone, I am attempting to replicate the results of a published paper to determine the mass-effective density in order to elucidate the bandgap formation mechanism. The paper is titled...

16 May 2024 3,272 0 View

Is the below quantitative analysis true?

Dear all, I have been trying to quantify phases in a powder mixture including LiMnO2 (orthorhombic, cubic, space group: Pmnm) and Mn2O3. I'm trying to use the Rietveld method, but concerning...

14 May 2024 5,788 3 View

Short Synthesis of Graphene Oxide from Natural Graphite Flakes?

I am in search of a modified Hummer's method, which can be used to synthesis graphene oxide within 6-8 hours. As I am a student it is not allowed for us to work after 5 in the laboratory. So I am...

01 August 2024 8,368 2 View

¿Are oxygen vacancies in semiconductors capable to change the band gap?

Dear all! Oxygen vacancies do raise negatively the Fermi level by increasing the negative charge in the semiconductor crystal structure. In the case of n-type semiconductors, I wonder if this...

30 July 2024 8,339 2 View

How can I separate graphene from amorphous carbon of similar particle sizes?

The starting material is a finely ground powder. Some particles contain more graphene than others.

30 July 2024 3,978 2 View

Reason for discontinuities in my Band structure?

Hey All! I am wondering what might be wrong with my band structure. I did the calculations using VASP and plotted the results using Origin. Although I have tried changing various input...

25 July 2024 2,920 11 View

How can I calculate spin texture using Quantum Espresso for non-colinear case ?

I want to calculate the spin texture for the electronic band structure obtained from SOC calculation. Is there any way for calculation of spin texture using quantum espresso??

19 July 2024 8,571 1 View

Should a defect induced structure be optimized in a DFT calculation?

I'm trying to study the effects of introducing vacancy defects in my material. If I optimize my structure and find the lattice parameter before introducing vacancy, should I again optimize my...

18 July 2024 1,794 2 View

Refractive index in the W-band (75-110 GHz) of some material (Teflon - PTFE) ?

08 July 2024 9,140 1 View

How to confirm if quantum confinement effect was occurred?

I'm making quantum well with 2 different bandgap materials, but I'm not sure quantum confinement effect was occurred because the well width is ~ 60 nm. How can I make sure that effect? Is there...

02 July 2024 8,426 1 View

What are the potential effects of atomic-scale defects on the electronic and optical properties of thin films in emerging semiconductor materials?

Despite significant advancements in thin film deposition techniques, the precise role and control of atomic-scale defects in determining the properties of emerging semiconductor materials remain...

01 July 2024 5,745 1 View

How can i calculate the band alignmet of Sc2CO2/BlueP heterostructure from DFT?

I know the work function and band gap of each monolayer and heterostructure. I calculated mulliken electronegativity(X) of Sc2CO2 and Bluep. From that i found Ev = X- 4.5+Eg Ec = Ev-Eg, where Eg...

28 June 2024 9,360 0 View