FCS focal volume calibration ?

I am trying to calibrate the focal volume of FCS setup by using Alexa 488 dye. The experiments is being carried out at room temperature (25 degrees). I have to take the diffusion coefficient of...

05 June 2019 5,447 1 View

Optimum dilution of microgels for FE-SEM imaging?

What would be the optimum dilution of microgels that should be used in the case of FE-SEM sample preparation? I would be using a glass substrate for imaging. I will either spin coat or dry the...

03 April 2016 9,856 4 View

Anyone familiar with the Hofmeister series, arrangement of ions?

In the typical Hofmeister series for ex F->Cl->Br->I-(Ionic radius 0.133,0.181,0.196,0.220 respectively), The ions on the left of Cl- is a Kosmotrope, whereas the ions on the right are...

11 December 2015 7,547 2 View

Turbidity- What wavelength technique determines the N value and hence colloidal stability of microgels?

Turbidity-wavelength technique is used by many to determine the 'n' value and hence the stability of the microgels. The formula used for the same is n=-(dlog tur/dlog lambda). Here turbidity can...

10 November 2015 1,535 5 View

Any advice on DLS experiments of microgels?

I have prepared a microgel (solvent water) and during the process I have added NaOH to maintain the pH of the solution as 12. Microgels have formed. Now when I do DLS experiments I saw that the...

09 October 2015 8,101 6 View

Mole percent to grams?

07 August 2015 8,024 0 View

NaOH solution preparation?

07 August 2015 216 1 View

Polymer hydrogel preparation ?

Is anyone working or is aware of a hydrogel which can be prepared at room temperature? (Without heating it to higher temperature above room temperature Ex: PNIPAM hydrogel )

06 July 2015 9,449 3 View

Why do I get microgel particle aggregation?

I have prepared microgel particles whose size should be around 100-150 nm. I have filtered the sample with the help of 250nm filter. But when I am carrying out the dynamic light scattering...

06 July 2015 4,511 9 View

Anyone familiar with PNIPAM microgel rheology?

In the figure given below, they have measured the relative viscosity of the microgels by varying the polymer concentration c(wt%). I had a doubt that, here whether they have prepared different...

04 May 2015 6,425 9 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

MD MOE RMSD

How to calculate the RMSD values for a MD simulation using MOE?

07 August 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

fatal error

When I tried to energy minimization my system, I got fatal error as below. Fatal error: Atomtype opls_116 not found Although I've already added this line: ; include water #include "oplsaa.ff/spc.itp" to [molecultype] directive in my topology.

16 June 2021 0 0 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 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

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View