Why size of the quantum dots increased after attachment on the glassy carbon electrode surface?

Size of the quantum dots is 2.3 nm after attachment on glassy carbon substrate, the size drastically increased to 40 nm. but shape of the Quantum dots is retained. is it due to aggregation?...

02 March 2019 1,954 3 View

Is it possible to get high electrocatalytic activity with electrode with lower electroactive surface area?

is it possible to get high electrocatalytic activity with electrode with lower electroactive surface area? what are the factors affecting electrocatalytic activity of the modified electrodes?

05 June 2018 6,355 0 View

Is it possible C-O bond formation like C-N bond in glassy carbon electrode in the basic condition?

is it possible C-O bond formation like C-N bond in glassy carbon electrode in the basic condition? In alkaline condition is Carbon-Oxygen bond formation possible in glassy carbon electrode?

31 December 2017 1,022 0 View

How to elucidate the structure of carbon dots?

How to find the exact structrue of carbon dots? i want to find the structure of carbon dots precursor for carbon dots was glucose is there any relation between precursor and structure of Carbon...

09 October 2017 8,077 1 View

Doubt in BSA capped Nanoparticles?

05 June 2017 6,152 3 View

How to remove Gold nanoparticles from glassy carbon electrode surface?

04 May 2017 5,962 7 View

Role of laviron equation electrochemical determination of methyl parathion?

04 May 2017 4,375 0 View

Is there any relation between pH and surface area?

02 March 2017 8,256 0 View

Can anyone suggest me negative redox potential biomolecules ?

please help to fine negative redox potential biomolecules like Hydrogen peroxide

01 February 2017 3,076 0 View

How to find the concentration of carbon dots?

How to find the concentration of Carbon dots? from weight of the starting materials how to find the concentration of carbon dots. is there any relation between the total weight of the starting...

31 December 2016 2,820 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

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 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

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

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 3 View

Heat exchanger with liquid Nitrogen as coolant?

I want to cool Natural Gas from 195 Kelvin to 138 Klevin in a heat exchanger by using liquid nitrogen as the coolant medium. When entering the heat exchanger, the liquid nitrogen will have a...

01 March 2021 6,450 5 View

What is the density for pva electrospining?

I'm Juan Carlos, a high school student who is working with electropinning, I made an electropinning machine with a 21g needle and a 30kv high voltage source and the distance between my needle is...

28 February 2021 298 3 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

Should we reduce the standard unit of length to 0.31951540592 meter ?

The reasoning behind this question is to align the ratios of the proton potential in energy per charge to the speed of light in distance per time. As these two dimensions appear to be related,...

27 February 2021 947 7 View

Does different dilution factors affect negatively on NH3 reading ?

I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...

27 February 2021 8,483 3 View