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Thank you for the video. I have some electrochemical data, I was able to do a fit of the Tafel equation; however, I noticed my alphas were very small, I think around 0.02, any suggestions?

can we insert our own developed electrode in your sensor?

Thank you very much for this video and content so far on the channel Martin

Can the cell be measured with three electrodes...or two electrodes? Most research uses two electrodes. Why?

I was wondering what your approach to building a biosensor to track a dogs dilated cardio arrhythmia might be. I’m trying to build a biosensor by hand for a tradeshow project but I honestly only started learning about it.

z The 12:43 12:43 12:43

can FSG4 also sense capsaicinoids besides capsaicin??

Sir, can we detect petroleum hydrocarbons through a specific biosensor made using bioluminescent bacteria which shows sensitivity only towards petroleum hydrocarbons?. If yes how can we design it. Need your guidance

Where are the REUSABLE APPLICATORS? The amount of plastics going into the environment is pure insanity and NOT sustainable. Thousands of CGM users dump their applicators every 10 days. WHERE ARE THE REUSABLE APPLICATORS, like what is thoughtfully used wth the sets on insulin pumps? God help us.

It’s always good to know the latest trends in wearable micro needle-based sensors as they are the future of health care ! Thanks for sharing this.

i could not catch exactly what is that liquid you are using to dilute the test sample. i hear it as buffer - but what is that?

where can we get more info on the product

Very informative sir, I wonder if we can also use the similar method to detect small peptide ?

Great to know the scoville of our little product! Thanks! 😁

I loved the way you use your slides. What kind of program is that very well done video! Thank you for sharing it!

what are these waveforms used in real world applications?

Assalamualaikum adabi kilag tu best familys 🎉

Thanks homie

Very nice presentations ZP on your channel and website. I'm not sure if my experiments are not going right because of enzymes or using electroanalytical methods wrongly. In the sensor I'm working on, I need to drive the reduction of Ferri to Ferro with a CA to measure the concentration of the substrate of some electroactive protein, in a process where FeCN should be the final electron donor. As I understand, the WE would be the source of electrons to drive this reduction. I'm able to get such a duck shape for my FeCN CV, am I correct to think that my CA should be set at a potential more negative than the potential of the reduction peak of FeCN? does it matter if I set it slightly positive (~50mV) of the reduction peak potential? Thanks in advance.

I believe education must be such that it's short simple and to the point of clearest explanation, which is this video indeed!

Can we get some content on UME and steady state current/voltammetry.

Very good introduction into EIS and really easy to understand. Thank you!!!

How does the shape of a cyclic voltammogram change when electrode kinetics are apparent?

kindly provide me an email, im so interested about this

Do u have a similar biosensor for calcium ions in blood

Not to be trite. But this entire video was gold.

Hello Martin, If I understood the concept, to measure the EIS, the main input is voltage and current. Output will be complex impedance with respect to frequency. Could you pls agree with it? I am not technical background but looking forward your response. Is this measurement can be consider as safety?

Nice video. Do you have one to explain the Warburg element in more detail? Curious on it's relatiom to diffusion

"Just a quick TH-cam response" I found this just scrolling and you just blew my mind! Talking about Capsaicin, I'd just go HPLC-UV and problem solved. For context, I work in analytical chemistry. I do use voltametry with known and widespread techniques. But I have never heard of the possibilities you've just mentioned! Using the voltametric "spectrum" of a molecule of interest to get more specific with a "simple" voltametric measurement instead of the easy but sure way of chromatographic separation followed by any possible detection method is very interesting. Sure, you don't get the specificity of an HPLC, but the time and cost savings (an HPLC costs around 100 K $ and an analysis will take a few minutes uo to an hour depending on the specific matrix and goal) are pretty substantial! Is this actively used in a field I don't know, like medical analytics, or not and you're researching it to find an application? I'd guess the second, because I would guess that there are a lot of factors interfering with the voltammogram and potential ways to use it as a detection method. The usual method (we now use in chromatography, since we're separating the compounds before detection by chromatography) would be to just use the voltage of the first peak (normal method in HPLC-ECD). You can't really do that in potentiometry or voltametry or amperiometry, because other molecules will also get oxidized and give a response, though with different response factors or efficiency, which is why chromatography is still the way to go. But what if we would just add a dimension and use a correlation to the amperiogram as signal? This may even work pretty selectively without chromatography but simply directly measuring! The same would be possible with UV/VIS spectra, but we didn't develop that, because the UV/VIS spectra of similar molecules is also very similar and usually not distinguishable. So no option. But this surely is similar with voltammograms of specific molecules. So maybe we could combine absorption specra with the voltammogram of a specific molecule and find an algorithm able to distinguish them. Maybe another dimension/measurement will be needed, but this could be a breakthrough in analytical chemistry, making chromatography obsolete in some use cases! Though beside the personal interest, I hope this breakthrough, if it happens, won't happen to fast, because it would make a very expensive room full of chromatography equipment at the company I work in obsolete 😂 But scientific breakthroughs don't happen that fast. And after that there's also governments and their incredible inefficiency 😂😢 Which you can never trust, except for its talent to be centuries behind the state of the art 🙄 And other negative points we shall not mention in public 😂

Hello! I have a question of you don't mind. If a medical device manufacturer is ISO 13485 certified as part of the MDR requirements, does that mean that all the company's products should adhere to its QMS? Or only those products that are considered as medical devices? In other words, do the non-medical device products of the company also need to adhere to its company's QMS?

ZP is always in fast progress. I like that. Keep it up Sir!!

Friendly suggestion: last 10 webinars were about the same thing, hot sauce and ginger. It's a bit boring. Tell us something new

Patti

Hi, can you do calculation from CV data for HER reactions, like tafel slope, ipc and ipa etc if possible

Thank you Zimmer

Hi thanks for this video, very informative and clear. Kindly make a video for Randler Sevick Eq. and Butler Volmer equation understanding.

Hi, I'm Simon. Please, how do i know the exact concentration of glucose i'm adding or injecting in a chronoamperometry test? I am injecting a 0.1M concentration after each 100 seconds using a micro pippet set at 25 micro litters. How do i label the concentration at each injection step?

Thank you for this amazing video , the content was very interesting and understandable for me. Can you explain what is the meaning of accumulation time and accumulation potential in DPV and SWV? Best Regards

thanks a lot, really helpful

why can't you people do amperometric detection at the E1(V) voltage and quantify it, it is better than Cyclic voltammetry? correct me if I am wrong! your videos are always informational and I learned a lot from these, thanks and cheers. :)

Can all your 2024 webinars be scheduled on LinkedIn too please

Good.

💯

I have absolutely no use for this, But that's pretty damn cool

Thank you for the video, very informative!

hii, what about the voltage connector

Sir where can we get a screen printed electrode?

Thank you for this great explanation, and I appreciate very much the inclusion of the explanation of why use a three-electrode system! One comment/question: In the diagram that you provide you connect the reference electrode directly to the inverting terminal of the OpAmp. But, then, I think that the feedback voltage is the reference electrode's constant voltage, not the changing working electrode's voltage. I think I understand now from piecing a few different videos together that there should be a low-gain differential OpAmp that outputs the difference between RE and WE, and then that differential output is fed into the feedback.

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