How can one make a sputtered gold layer negatively charged?

If a thin gold layer (50 nm) is sputter coated on a wafer, is it possible to make this Au layer negatively charged, for example by adsorbing a negatively charged specie? Can we citrate for this...

31 December 2014 8,144 3 View

How does metal density influence the quality of a sputtered thin layer?

In the case of sputter coating, if we switch from Platinum (density 21.45 g/cm3) to Copper (density 8.96 g/cm3) for the same thickness of 20 nm, how the metal density difference will affect the...

09 October 2014 2,506 5 View

How to enhance adhesion between sputtered Au and Pt thin films?

I have noticed poor adhesion between sputtered Au and Pt thin films. Why this is so, and is there a way to enhance this adhesion?

09 October 2014 9,345 14 View

Is graphite a good material to serve as working electrode?

Can I use colloidal graphite coating as working electrode for the electropolymerization of conductive polymers? e.g. PANI, PEDOT, PPy.

08 September 2014 5,953 4 View

Is an Ag/AgCl Reference Electrode an issue?

08 September 2014 4,188 15 View

How can I remove a sputtered Ag or Au layer from polycarbonate?

I wish to know the method and materials required to remove sputtered Ag or Au layer from the surface of a polycarbonate membrane used for the preparation of nanowires.

07 August 2014 1,738 5 View

Why is a white colored matter produced as soon as Ag/AgCl reference electrode is dipped into a AgNO3 solution?

While trying to deposit Ag, as soon as I dip an Ag/AgCl reference electrode into a Ag deposition solution of 0.2M AgNO3 + H3BO3 + HNO3, white colored matter starts to produce from the interface of...

07 August 2014 724 27 View

Is there a standard way to determine if a metal can be electrochemically deposited on another?

06 July 2014 7,326 12 View

Why I am not able to have reversible CV of potassium ferricynaide/ferrocyanide redox couple?

06 July 2014 1,589 26 View

Is multilayer electrochemical deposition of Cu, Ni, Fe and Zn possible galvanostatically?

I want to sequentially deposit uniform layers of Cu, Ni, Fe and Zn, respectively on a gold layer. Is such sequential deposition possible galvanostatically?

05 June 2014 6,566 5 View

What is the indication of the absence of peaks in Methanol electrooxidation CV curves ?

I have several question regarding the MOR; hope anyone help me better understand. 1- in CV using (KOH+MEOH) what is the indication of absence of the redox peaks? shouldn't they exist as a sign...

28 February 2021 4,851 8 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

Have anyone checked before Cyclic voltammograms of intial ITO substrate and E-teck?

As a beginner in electrochemistry, I tried to obtain cyclic voltamograms of commercial anatase powder deposited on an ITO substrate or on Eteck. After several attempts, I noticed that my cyclic...

23 February 2021 3,175 3 View

Is there an ideal incubation time of RGO-modified SPCE before subsequent use, i.e., electrochemical characterization or further modification?

I notice that upon washing and air-drying of my RGO/SPCE surface and characterizing again via DPV, the current response towards ferricyanide probe significantly decreases. My worry is that the...

22 February 2021 5,324 3 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

How to Study a proton NMR of Graphene prepared by Electrochemical Exfoliation technique?

I performed a Proton NMR of graphene powder prepared by electrochemical exfoliation technique. It shows some peaks. But I can't understand it.

21 February 2021 8,947 3 View

How to predict the reaction pathway for electro organic synthesis?

Can anyone recommend some any software/models available that can predict substance reactivities and the reaction yield under a specific set of reaction conditions process and proposing pathways to...

17 February 2021 2,383 3 View

Is there any method that we can electrochemically oxidize a powder?

I am working with a material which is sensible to water and oxygen, I would like to oxidize this powder either chemical or electromagnetically. Does anyone knows a method to electrochemically...

09 February 2021 2,944 3 View

Selecting referencing electrodes for electrochemical experiment?

I have several questions, What reference electrodes is commonly used for aqueous electrochemical systems? What reference electrodes is commonly used for electrochemical systems which used...

06 February 2021 6,389 5 View

How to avoid polypyrrole deposit on counter electrode?

Hi all, Currently, I electrodeposited polypyrrole on carbon electrode but I got some problem when polypyrrole also deposited on the surface of the counter electrode. The concentration of pyrrole...

05 February 2021 2,103 3 View