How do I get nanoparticle stability in PBS?

@Yasmeen Akhtar has asked me a question via PM as below: Hi Sir, I prepared a nanomaterial but its stability is poor in the PBS. Could you please guide how I can improve it? Thankyou. I also...

05 June 2019 6,964 3 View

Can l ask you a question please regarding nanotechnology department?

@Amira Hesham has asked me this question by PM and I reproduce it below so the full benefit of RG can be applied: Hi can l ask you a question please regarding nanotechnology department?

04 May 2019 9,416 2 View

How can I prepare Salinomycin nanoparticle (AuNP)?

@Kanchan Sonam has asked me this question as a response to his earlier question that was posted in the public RG forum. I was PM'd which means that others on RG cannot benefit from any other...

04 May 2019 6,870 3 View

What causes the stability or instability of powders in suspension?

@Talat Zakeri has asked me this question by PM. In order that she can benefit from input from many experts I post it below: Hi, I have two powders from Sasol company. one of them is alumina and...

03 April 2019 9,412 8 View

Why different wavelengths have different scattering intensities?

I have a PM from @Shehroz Razzaq as follows: Thank you very much Sir. I have two questions: 1. Why different wavelengths have different scattering intensities? 2. Why scattering intensity...

03 April 2019 4,885 3 View

Why is the intensity mean so different to the number mean in DLS?

@Randa Zoqlam has PM'd me this question and I think to others too. Why is the intensity size very different from the number size? Dear all, I'm developing positively charged PLGA nanoparticles...

03 April 2019 2,372 2 View

Reasons for non-clear supernatant?

@ Soumya Menon has asked me a question by PM. Hello Sir, I am working on the coating/ loading of drug on selenium nanoparticles which was synthesized using green methods. I have coated with PEG...

09 October 2018 9,148 1 View

Microemulsion in organic solvent Which cuvette to use?

@ Shwetha Karanth I have a question from Shwetha Karanth that I will post so that others can be engaged in the debate: Hello, I would like to measure size of my microemulsion in organic solvent....

08 September 2018 10,032 3 View

DLS plots/curves interpretation?

I have a PM from Randa Zoqlam as follows: Dear Professor I have a question and I would be grateful if you can help me , I'm using the DLS to measure the size of the PLGA NPS and I have noticed...

08 September 2018 2,375 3 View

Stoichiometry of gel/zeolite preparation?

@ Sebete Mabaleha Sebete has asked me a question via PM and I will ask it on his behalf so that all experts can contribute to an answer: Hi Alan I realized that you answered the question about...

08 September 2018 4,875 5 View

What is the status of bread making and more bakery foods with the use of insect flour/powder?

Insects have been consumed by human diet since prehistoric times. At present, the idea of looking at insects as food has been getting traction worldwide, also in response to increasing food...

03 March 2021 6,223 5 View

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 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

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25 February 2021 5,713 1 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

How to reduce static electricity of powder after lyophilization?

I am working on synthesizing and then purifying peptides using the SPPS system. After purification of the peptide, the peptide powder is obtained using a freeze dryer. When measuring the powder,...

22 February 2021 10,099 5 View

What kind of steel moulds are used for hot pressing metal powders?

My main concern is that the metal powders should not weld to the mold surface and I should easily be able to eject out the pressed samples. I am looking for alternative for graphite moulds. The...

22 February 2021 2,965 4 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

Are ZnS nanoparticles moisture sensitive?

Hello Everyone, I tried to form ZnS nanoparticles using the hot injection method and was able to form the same (confirmed by XRD). When I centrifuged, after the reaction I got a kind of white...

17 February 2021 1,709 3 View

How can we determine the band gap of a composite material that is made up of a composition of direct and indirect band gap semiconductor materials?

I have a direct band gap material and an indirect band gap material. If I made a composite of both through physical mixing. Then how can I determine the band gap of such a material as the Tauc...

17 February 2021 8,104 4 View