ZnO powder stick hard to the ceramics crucibles?

I am melting Zn based solution in furnace, the solution is in Ceramics crucibles but after heating at 900 C the obtained powder is dark grey colour (Not white) is sticking hardly to crucible (so...

07 August 2018 1,197 14 View

Raman Spectra of Graphene (only 2D peak)?

Dear Researchers: I am wondering after getting FT-Raman spectra, Ge Diode of Graphite, Graphene oxide and Graphene. All results shows only one peak (2D) around 2900-3100 cm-1 , even graphite...

04 May 2018 9,816 4 View

PDMS stamp for contact lithography?

I am fabricating multi-layer PDMS stamp for nano lithography. Unfortunately I am not able to get good pattern transfer from silicon template after molding on the template. After fabricating, for...

03 April 2018 7,305 5 View

Redox potential of 0.6M NaCl solutions?

Hallo: I want to see the exchange current in charge transfer reactions at TiO2 films -0.6M NaCl solution interface.I want to know about the redox potential of my solution as its very important to...

02 March 2017 5,331 4 View

Optimization and Stability for Electro-chemical measurements?

Well, Its kind of annoying to get Impedance/OCP results different for every new sample. Samples prepared and processed with same parameters and using same pH electrolyte. Samples are commercial...

31 December 2016 4,785 1 View

Can I use same working electrode for different pre polarization experiments?

31 December 2016 7,978 4 View

Mott-Schottky Plot of n-type shows negative slope like p-type Semiconductor?

I have measured and got MC plots for titanium oxide on titanium substrate. Measurements were done with different pre-polarization time galvanstatically. On some samples i have received negative...

31 December 2016 1,192 18 View

Effect of Graphene nanoparticles sizes on Hydrophobic and anti-reflective coatings?

I am interested in Graphene nanoparticles to be used as super hydrophobic and anti-reflective smart coatings. I haven't started any experimental techniques but doing literature review for my...

05 June 2016 4,590 3 View

Can anyone help with XRD of graphene and graphene oxide?

I have received XRD results of Graphite, GO and Graphene sample. I got peak of highest intensity at 26degree in graphite sample. The intensity of peak at 26deg is reduced and other peak with small...

03 April 2014 2,072 6 View

Can anyone help with Raman spectroscopy of graphene and graphene oxide?

What ranges of D and G peaks will suggest that Graphene and Graphene Oxide is synthesised as in the literature there are alot of variations like D peak ranges from 1320 to 1365 G Peak ranges from...

01 February 2014 9,658 28 View

What are the new 2D nanomaterials were used for Silver nanoparticles stabilization?

In the stabilization of AgNPs are vital in current research interest. However, some of the 2D nano-materials like graphene oxide, MoS2, etc... previously used to stabilize it. But still they shown...

01 March 2021 2,207 3 View

1 nm thick MgO thin-film to be deposited on Si wafer using thermal evaporation. What will be the optimum deposition conditions?

Favourable conditions of base pressure, rate of deposition. Also, by which characterisation technique to be used to verify the thickness of the deposited film.

28 February 2021 3,640 3 View

Thermal reduction of graphene oxide.?

I am trying to reduce graphene oxide by thermally but I have no proper information regarding this. Can any one help me regarding the details about temperature and time for the reduction of...

23 February 2021 4,155 4 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

How can I measure the thickness of thin layers deposited on textured glass susbtrates?

I want to measure the thickness of aluminum oxide and titanium oxide layers deposited on textured glass substates. The layer thicknesses are typically below 100nm.

21 February 2021 5,465 4 View

What is the best etching method for Mg-Ca alloy?

I have used Picral etchant (4.2 g Picric acid, 10 mL Acetic acid, 70 mL Ethanol, 10 mL distilled water) but it didn't work. Is there any alternative?

21 February 2021 2,558 5 View

What is the best substrate for exfoliating few layers of hexagonal boron nitride (hBN) using traditional scotch tape method?

Unlike graphene, it is usually very difficult to exfoliate few layers (~10 nm thick) of hBN on SiO2 substrate due to lip-lip interaction at the edges. Au substrates have been proven very useful...

16 February 2021 2,635 2 View

How can I calculate teh crystallinity degree of graphene oxide?

I had treat my XRD diffraction pattern by Highscore to calculate the crystallinity degree Xc and I have the formula but I dont no the 2Theta of Ac and Aa to calculate Xc. Is it like polymers...

10 February 2021 6,305 5 View

About XRD details of pristine and doped RGO?

Hi Can anyone please help me know the XRD details of reduced graphene oxide, Nitrogen doped reduced graphene oxide, Sulphur doped reduced graphene oxide, Nitrogen and Sulphur co-doped reduced...

08 February 2021 3,033 3 View

What is the difference between Graphene Oxide and Expanded Graphite?

What are the main differences between Graphene Oxide and Expanded graphite, in terms of surface functionalities, conductivity, d-spacing and other features? Is the term expanded graphite...

06 February 2021 9,810 4 View