CV vertex current is increasing and peak is shifting? Any good reference pointing those issues with dicussion?

Hello, I am looking for some good references that are mentioning/discussing/resoning the shifting of oxidation and reduction peaks as well as describing the reason of increasing the vertex current...

03 April 2019 7,534 4 View

Electrolysis using Ti electrode? better or bad?

Hello all, I am using a nano-indention device (JKR) to check adhesion capability of polymer gel under electric condition. I place two electrode on top of my sample. one electrode is indention stem...

02 March 2019 6,910 2 View

Electrical conductivity and resistivity of graphene?

Hello, I was looking for a electrical conductivity and resistivity value of graphene sheet but could not find any. Most of the info says it is superconductive without any value. Will be happy to...

31 December 2018 6,856 4 View

How to measure PPM from the Concentration?

Hello, I am trying to measure Acetone exposure amount to the sensor. I used to blow air through acetone and pass the air into a flowmeter which gives reading in cc/Min. and then the output air...

31 December 2016 490 5 View

How to make graphene layer non reactive to water vapor?

Hello, Just asking to get some knowledge, how can I make graphene layer non reactive with water vapor exposure? will appreciate any kind of paper or information. thank

10 November 2016 3,521 3 View

How to make SnO2 and TiO2 nanocomposite paste?

09 October 2016 556 5 View

ATR-FTIR of solvent exposing on graphene! IS my interpretation ok? need suggestion?

Hello I was trying to find difference between solvent exposure on graphene. I added a picture here. Is my interpretation ok about the bonding? though all the curve looks like same except the...

07 August 2016 7,627 5 View

Raman Peak undefined?

06 July 2016 5,190 9 View

Attenuted Total reflactance dip at 2400 cm-1. need explanation?

Hello Everyone, I am making some grapheme film, and exposing it to different gases. After that I am doing ATR(Attenuated Total reflectance) to see the effect. The problem is When I am exposing to...

06 July 2016 5,800 5 View

Platinum coated titanium ball/electrode

Hello, I am looking for some platinum ball of 1/4 inch diameter, or platinum coated titanium ball of 1/4 inch. If anyone has idea about any sources, vendors or manufacturers info, or even if...

01 January 1970 8,667 0 View

Buffer to disrupt platelet alpha granules for PF4 quantification?

Hello! I want to quantify by ELISA the secreted (from platelets poor plasma) and the non-secreted (from platelet lysate) PF4 before and after TRAP stimulation. I will use the ELISA from R&D...

03 March 2021 1,499 2 View

Buffer Exchange using column packed with sephadex G-25 effect on protein concentration?

Hello, If i am doing a buffer exchange for an antibody of 1mg/mL, does the elution lose protein in the process of buffer exchange? For example, if i flow through 500 uL of 1mg/mL sample, and...

03 March 2021 6,299 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

Sutter electrode holder leaking after applying positive pressure. How to fix?

I am using a Sutter electrode holder for my patch clamp experiments, but I'm having trouble keeping positive pressure inside my electrode due to a leak out of the back of the holder. I have added...

02 March 2021 5,829 1 View

How optimize the Size Exclusion Chromatography?

Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...

01 March 2021 2,215 2 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

Issues with Permeabilization during Flow Cytometry?

Hello Everyone. Currently I am working to characterize macrophages in the myocardium after ischemia-reperfusion injury in rats. Due to the low total cell number isolated from rat hearts I can...

01 March 2021 3,867 3 View

Why are my bands weird in this Agarose gel?

Can someone please give me some possible things that could go wrong? Here is my recipe: 0.5g Agarose 50 mL of TAE 1x 1 uL ethyl bromide. Gel was run at 100V for 1 hour. The buffer used is also TAE.

01 March 2021 9,952 3 View

What do I do with DLS peaks that are from the buffer?

I'm looking at the aggregation of my protein sample using DLS. Unfortunately, my buffer (20mM HEPES) also results in a set of peaks. These are at approximately 1 and 1000 d.nm. The lowest peak...

01 March 2021 9,015 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