How to determine the concentration of polymer micelles?

I have some PNIPAM (Poly(N-isopropylacrylamide)) aqueous solution in which PNIPAM are crosslinked to form spherical microspheres. I want to know the concentration of these microspheres in...

08 September 2016 4,891 7 View

How to prevent silver nanoparticles from dissolving in aqueous solution?

I am trying to do some electrochemical measurement of silver nanoparticles on ITO/glass substrate and noticed that the silver nanoparticles easily dissolve in solution and change morphology from...

03 April 2016 8,290 5 View

How to functionalize silver nanoparticles with thiolated PEG?

How to functionalize silver nanoparticles with thiolated PEG? I found a couple of papers doing this, but when I mix the Ag nanoparticles with thiolated PEG, the silver particles seem to be...

03 April 2016 8,524 4 View

Why the current I get in chronoamperometry is negative?

I am doing some photochemical reaction on the electrode and monitor the current produced in this process by chronoamperometry. The potential I set in the working electrode is its potential...

02 March 2016 7,748 9 View

Why the laser intensity is so low in photothermal therapy?

I noticed that most literature doing photothermal therapy were using a laser power intensity of 10W/cm2 to 20W/cm2 and they reported a dramatic temperature increase as high as to 40oC which is...

31 December 2015 5,263 5 View

What's the measurement limit of dynamic light scattering?

I checked it online and the result I got is 1nm ~1micrometer. But does anyone know how reliable if I get result ranging 1~5 nm for nanoparticle samples? Thanks!

01 February 2014 5,434 16 View

How reliable is the reflective index of film obtained from ellipsometry?

I am measuring the thickness and reflective index of PEG film on Si wafer. I noticed that the reflective index the ellipsometry gave me (1.58) is much higher than what I expected (1.47). I was...

09 October 2013 9,756 1 View

How to separate nanoparticles of two different sizes?

I have a mixture of two types of nanoparticles, one is a cubic with an edge length of 20 nm, the other is a bipyramid 80nm *20 nm. Both of them are very monodispersed both in size and shape. They...

07 August 2013 4,054 26 View

How do I do EDS quantification?

I have a nanomaterial that contains gold, silver and chloride and I want to do EDS to quantify their relative content. I need something to determine the k factor between these three elements. I'm...

07 August 2013 2,403 4 View

Why does blocking with my immunogenic peptide cause nuclear fluorescence in ICC?

Hi all, I am validating a polyclonal antibody raised against human ANT4, through WB and ICC. In most of my controls, the antibody shows very little off-target binding, but when I pre-incubate the...

03 March 2021 5,999 3 View

Why can't make aluminum nitride film successfully by use sputter?

We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...

03 March 2021 7,975 3 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 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

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02 March 2021 3,060 3 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

Does Napabucasin soluble in dichloromethane and in ethanol?

I need to prepare a solution of Napabucasin (inhibitor of cancer cell stemness) in dichloromethane. The drug is expensive, so maybe somebody already tried to do it. If it is soluble, what is the...

02 March 2021 9,945 3 View

Help request in CST microwave?

im working now on TPV solar cells and metamaterials and i realy need our help in CST microwave i have a tpv cell simulation and i want to extract particullarly the absorbtion of only the active...

02 March 2021 2,246 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

Adherance of Polyaniline coating over stainless steel?

Is the electropolymerisation of polyaniline coating over stainless steel (SS) via Cyclic voltammetry technique is really adherant? Else how to improve the adhesion of the coating, whether any...

01 March 2021 8,220 2 View