How good a raspberry pi based cluster works for simulation compare with simple core i7 computer?

Hi, I want to setup a 4 nodes (each one with 4 cores) Raspberry pi cluster and install quantum espresso on it for simulations. Does anyone know how good it works compare with core i7 PC computer...

11 December 2017 4,949 7 View

How the gap opening in 1D metals due to Peierls transition would happen ?

05 June 2017 5,035 0 View

Is there any commercial device with comb shape electrodes ?

31 December 2016 8,909 2 View

How completely dry CNT?

Hi everyone, I disperse MWCNT(200mg) in 30mlit H2SO4/HNO3(3:1) solution to form defects on it. After sonication for couple of hour, I add DI water to it and immediately pour it on paper filter....

31 December 2015 8,650 3 View

How should I choose a proper heater for substrate heating in vacuum?

Hi I want to heat my substrate up to 400C in vacuum around 5E-4 Torr and in argon gas in 5E-2Torr. What are the characteristics of heater that I should consider in these pressures? What are good...

09 October 2015 7,965 15 View

Uv-Vis spectrum of single wall carbon nanotube?

I dispersed 0.2mg/milt SWNT 95% purity (1-2nm OD) in 2% SDS and sonicated for 2h using tip type sonicator with 2W power and 70% cycle. I use a sample of it for Uv-Vis spectroscopy. The result is...

09 October 2013 9,152 9 View

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

03 March 2021 8,272 1 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

How two melting peaks in DSC of polypropylene can be merged into one crystallization peak?

The figure shows DSC cooling (blue) and 2nd heating (green) curves (step: 10 K/min) for a commercial sample supplied as Atactic Polypropylene (APP). The heating curve illustrates two major...

03 March 2021 5,857 3 View

What thickness need for ITO to use as conductive layer?

I want to do RF sputtering of ITO on glass substrate using magnetron sputtering. what thickness do i need to make it good conductive layer to use it for PSC. Moreover, whats about thickness of...

01 March 2021 395 3 View

How to grow E.coli on the low salt LB agar plate with 50 or 100ug/ml of Blasticidin?

Hello, I would like to ask how to grow E.coli which resists 50 or 100ug/ml of Blasticidin. I have tried many methods by using low salt Luria-Bertain(LB) agar plate. However, no colonies grow. Let...

01 March 2021 2,027 2 View

Why is my platinum counter electrode getting dirty during electrodeposition?

I am conducting anodic electrodeposition of MnO2 onto a stainless steel substrate, using a platinum strip as a counter electrode. This is done galvanostatically, with the current held between 5...

27 February 2021 1,829 3 View

Are there lab markers/pens resistant to Roti-Histol?

Hi, I'm looking for a pen/marker to write on the smooth, transparent (non-frosted) part of microscopy slides which does not get washed away by alcohols and most importantly Roti-Histol. I want to...

24 February 2021 9,902 5 View

I have a problem with kanamycin - why the kanamycin doesn't affect?

Hi everyone, I need to expression of GFP with pET28 plasmid in E. coli BL21(DE3) plysE. Transformed cells have kanamycin and chloramphenicol resistance. Normally, only transformed cells should...

22 February 2021 4,032 4 View

How does elongation affect the resistance of an electrode?

What are the testing rate for electrodes recommended by ASTM for cochlear implants. I am currently doing the 15mm/min elongatio testing.

22 February 2021 1,515 1 View

Resistivity of PVD TiNx thin films vs. N2 flow?

In the PVD of TiN thin films (~100A), I've found the resistivity of the TiN films dropped from ~100 to 60um*cm with N2 flow increasing up to the metallic mode ending point; then the resistivity...

21 February 2021 1,864 2 View