Can E-beam Evaporator Damage Atomic Thin Film (graphene/hBN) by Bombardment Effect?

01 February 2020 774 2 View

How to etch Pt-Ir STM tip with CaCl2?

The problem is there is no drop-off at all. The wire won't rupture near the surface, instead, it seems like the wire immersed in solution get etched away evenly. The etching condition I use is...

08 September 2019 3,893 3 View

What influence the surface orientation of FCC crystal during annealing?

Take Ni as example, after annealed in vacuum at about 900C, grains with different orientation are formed, some are 111, some are 100, and some are 311, etc. So what play the role in determining...

08 September 2018 9,280 4 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

How COVID-19 has affected mental health?

The pandemic has led to depression and anxiety and its negative effects shouldn't be ignored. However, it has also led some people to become more resilient! What do you think? Thank you.

21 February 2021 4,733 19 View

Small displacement measurement in vacuum?

Hello, I have a question. there is a circular thin foil which vibrates in vacuum, the foil restricted and moves up and down. it is like a diaphragm between two pipes . both sides are in vacuum but...

18 February 2021 8,075 3 View

Problem in detection of a specific gene & elimination of primer dimer in qpcr?

In our lab, we are trying to do real time PCR for some genes. One of them has a size of 85 bp. Whatever we do, we had an amplification in negative control. When we run agarose gel, it always a...

14 February 2021 9,750 11 View

Does anyone have a stack of images of action potentials or abnormal brain scans?

I need a stack of black and white .jpeg/.tiff/.jpg/.png images across time of either action potentials, neurons firing, or brain scans (comparing disease and normal brain, disease progression,...

09 February 2021 2,648 3 View

Why non-specific band appear on T-ARMS PCR?

Hi everyone. We want to know how can I remove the non-specific band amplification on this variant. Although the amplification of non-specific band is not as intense as the band that we want, but...

09 February 2021 588 2 View

I have faced a problem to amplify VP2 gene of porcine parvovirus 1,2,3 and 5? Please suggest me how can i solve this problem?

Till now i haven't got any PCR amplified vp2 gene bands on specific annealing temperature and in step up PCR.

08 February 2021 819 4 View

Xrd result of ZnO thin film shown better crystallinity at low temperature and the crystallinity decreases as the temperature increased. why?

I have synthesized ZnO thin films at four different substrate temperature say, 300, 350, 400 and 450C. and the samples were annealed at 450C for half an hour. the xrd result shown better...

04 February 2021 7,641 4 View

Functionality on MWCNT can possible without using vacuum oven?

I want to synthesis functional MWCNT from pristine MWCNT using acid treatment but I haven't vacuum oven for drying but I have a normal hot air oven. So may it possible to use hot air oven for...

02 February 2021 8,475 3 View

How can I partially remove the metal oxide layer for solar cell device?

Hi, I want to make a perovskite-based planar solar cell device. (electrode/HTL/perovskite/ETL/FTO) To fabricate the device, one electrode should be deposited on HTL and the other should be...

01 February 2021 229 6 View