What is the effect of the electrode area and shape on the current of semiconductor-metal contact?

If I have deposited semiconductor thin film followed by metal deposition for electrical measurements, and since both of the shape and area of the contact electrode a can be varied,s illustrated in...

08 September 2018 766 4 View

Why do nanoparticles reveal broad optical absorption spectrum?

Optical absorption of nanoparticles is characterized by broad absorption spectrum with no clear edge for the main absorption band (I. e. Band gap). What are the main reasons?

01 February 2018 4,566 7 View

What are strategies of choosing baseline mode during the analysis of some spectroscopic spectra?

Through the analysis of some spectroscopic spectra (e.g. XRD, PL, FTIR and Raman) various baseline mode can be applied for obtaining a well defined Gaussian or lorentzian peaks, hence baseline...

31 December 2017 6,609 2 View

What is the effect of Excitation wavelength on the emission intensity?

06 July 2016 5,968 1 View

If I have ternary alloy of ZnxCd1-xS quantum dot, which trap state produced by zinc or cadmium is closer to the conduction band?

in attempt for investigation the distribution of trap states in ternary alloy of ZnxCd1-xS quantum dots, which produced by Zn, Cd and S interstitial and vacancies, some confusion in understanding...

09 October 2015 2,536 2 View

How glass convex lens magnify laser light ?

in some physical experiment glass convex lens were placed in the path of laser light for magnification geometrically not Intensity. I wander how this and the laser incident parallel to the...

02 March 2015 9,045 0 View

How can I measure I -V characteristics for powder?

10 November 2014 5,552 9 View

How is CdSO3 formed from annealing of CdS nanoparticles ?

I have a strange result, in which CdSO3 is formed with annealing of CdS nanoparticles at 600oC. I assumed that I would be getting CdO, so it's a strange result for me and no literature confirms...

08 September 2014 2,294 3 View

Can you help with the effect of polyethylene glycol on metal oxide nanoparticles?

Polyethylene glycol used as a surfactant to prepare metal oxide nano particles.

06 July 2014 8,044 1 View

What is the effect of gamma irradiation on Metal chalcogenides such as ZnS or CdS nano particles?

say you exposure your sample to gamma souce what is the effect on the optical properties?

06 July 2014 5,080 1 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

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

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

Can chitosan alone can act as a reducing agent for Cu(0) nanoparticle sythesis?

[Synthesizing Cu nanoparticles without using chemical reductants]

01 March 2021 8,359 1 View

What are the new 2D nanomaterials were used for Silver nanoparticles stabilization?

In the stabilization of AgNPs are vital in current research interest. However, some of the 2D nano-materials like graphene oxide, MoS2, etc... previously used to stabilize it. But still they shown...

01 March 2021 2,207 3 View

What is the state of the drug inside solid lipid nanoparticles (SLNs)?

I am a little confuse with the mechanism of solid lipid nanoparticles (SLNs). The main point of encapsulating drugs into SLNs is because some drugs have low solubility in water. Therefore, SLNs...

01 March 2021 3,703 3 View

How to check the uv-vis absorption of nanoparticle by surface plasmon resonance?

I try to check the uv-vis absorption of Indium nanoparticle. Now I am measuring in solution, can I measure it in the form of a film?

01 March 2021 930 3 View

Distribution of particles in metal matrix?

How would define the "good" and "poor" distribution of particles within the matrix. Is there a quantitative solution to assess the distribution of the particles, which then having denotation of...

28 February 2021 7,397 8 View