On what basis the semiconductors were named as direct and indirect bandgap semiconductors?

On what basis the semiconductors were named as direct and indirect bandgap semiconductors? What are the properties makes the materials into direct and indirect bandgap semiconductors. Please...

01 January 1970 8,661 10 View

What is the role of green surfactants (Plant extracts) for the synthesis of Metal oxide nanoparticles?

I was used some plant extracts for the synthesis of metal oxides under the ultrasound irradiation. I got the uniform sized nano particles.

01 January 1970 4,125 4 View

Is the Quartz tube allows Visible light radiations?

Is the Quartz tube allows Visible light radiations? or UV radiations? or both radiations? Please let me know.

01 January 1970 4,420 5 View

Why the crystallinity of metal oxides increases on calcination?

material chemists

01 January 1970 9,984 3 View

How to confirm the dopant? weather it is in crystal lattices or on the surface by XPS?

Dear sir/Madam, I have synthesized the Cu doped TiO2. i got the XPS results. from that the Cu confirmed as Cu (II) state. My question is weather it is in crystal lattices of TiO2 or on the surface...

01 January 1970 4,171 6 View

What is the colour of SnWO4 nanopowder?

I have been synthesizing SnWO4 nano powder with black color. What is the exact color for this compound?

01 January 1970 3,027 7 View

Is TiO2 belongs to direct or indirect bandgap semiconductor?

Weather the TiO2 belongs to direct or indirect band-gap semiconductor?. One of the reviewer mentioned that TiO2 is a Indirect band-gap semiconductor. Please let me know.

01 January 1970 5,369 3 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

Can we block unwanted images during the x-ray prediction?

i am try to classify the x-ray images. During classification , can i block unwanted images (except x-ray image).

03 March 2021 7,100 1 View

Does anyone know to clarify these changes?

01 March 2021 1,290 2 View

How to size battery banks?

I am designing a small grid connected solar PV power-plant. As the battery's capacity is specified in Ah and demand in kWh. What is the best way to size the battery bank? I have battery price in...

28 February 2021 1,638 3 View

How to model the battery pack in PSIM or PSCAD?

Hello, I have simulated a single battery cell using Thevenin equivalent circuit. For a battery pack, I have a large number of cells connected in series and parallel connections. Is there any way...

28 February 2021 2,116 1 View

How can we simulate an hyperelastic-viscoelastic behavor with Ansys APDL?

I am working on modeling and simulation of biomecanical material behaviour, I have succeded on simulating skin using anisotropic hyperelastic material, on APDL and in our lab's finite element...

28 February 2021 552 3 View

In an eye with Tyndall, does each dot correspond to an individual cell?

When you observe the presence of Tyndall in an inflamed eye: Does each of the small floating dots correspond to an individual cell or to an aggregate of cells? Does a conventional slit lamp have...

27 February 2021 6,326 2 View

How to calculate the crystallinity of cellulose film?

27 February 2021 2,753 4 View

What could be the reason for not having further low chi square value (better agreement) in my refinement result?

I have tried every combination of parameter changes and after that i have a poor chi square value. I can't get it lower any further. I know there have been a lot of discussion about Rietveld...

26 February 2021 8,480 3 View

LEDs on Vis Light photo degradation of MB water sol via N doped TiO2 in a mini flume?

Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...

26 February 2021 4,026 5 View