How do empty d-orbital cations affect the non linear optical properties of SiO2-based glasses?

It has been confirmed early in the nineties that adding oxides of empty d-orbital cations (like TiO2, Nb2O5, WO3...) improves the non-linear optical response (namely third order non linear...

03 April 2016 4,403 2 View

How to determine the crystal structure of nanoparticles (less than 5nm) embedded in a glass network?

Hello!Let's imagine a glass network (silica-based for instance) and some crystalline nanosized (< 5nm) particles are statistically distributed through this network. Indeed, by means of Raman...

02 March 2016 2,055 8 View

Are there any commercial twin-roller quenching devices for laboratory use?

As the question title suggests, could you please let me know if there is a company that fabricates laboratory-scale twin-roller quenching devices? Thank you in advance! Kind regards,

11 December 2014 9,467 1 View

Are there any journals which publish mini-reviews and/or short commentaries in glass and ceramics research area?

Hello! I am looking for a journal that allows to publish short reviews and commentaries, opinions and hypotheses discussing glass and ceramic research advances. To my knowledge, in the field of...

06 July 2014 6,801 2 View

What is the common DTA curve's shape of glasses that require very fast quenching rates?

05 June 2014 1,151 8 View

How does crystalline phase amount in a glass influence the glass' transition peak at DSC curve?

To be more clear, does the glass transition peak differ considerably between a pure glass and a glass with a negligible amount of crystallinity? Glass and crystals having the same chemical...

05 June 2014 1,499 8 View

What is the approximate cooling rate of a furnace once turned off?

As the question's title suggests, what is the approximate cooling rate of a standard laboratory furnace once shut off, i.e. allowed to cool to room temperature.

04 May 2014 5,780 18 View

How do you explain XRD pattern change upon heating?

To be more clear, what are the key elements to explain XRD pattern change when performing a High-temperature XRD? Please see the attached file (High-temperature XRD profiles of K2Te4O9 glass),...

04 May 2014 3,709 27 View

How do you quantify the amount of amorphous material in a crystalline matrix?

I am trying to synthesize a crystalline inorganic compound with a very low tendency of devitrification. A posteriori, XRD patterns reveal the presence of a non-negligible amount of amorphous...

04 May 2014 2,841 15 View

What makes the Raman spectra of bulk glass and its corresponding powder different?

To be more clear, how can you explain that the Raman spectrum of a bulk glass sample features some other variations than that of the powder of the same bulk glass?

03 April 2014 3,875 16 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

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