Which Cutoff Fitting is More Accurate for UPS?

More Jihyun Kim's questions See All

Why I can't see any band in SDS-PAGE?

Currently, when I run SDS-PAGE, I don't see any bands at all, even though I used the same material just a day ago and it worked fine.... In our lab, we dilute the 10X running buffer to 1X and...

06 August 2024 5,373 2 View

Question about water vapor uptake of metal-organic frameworks?

I'm working on the atmospheric water harvesting, and i synthesized MOF by adding some materials into precursor and changing the conditions. (i followed Hydrothermal method) Actually, if MOF is...

24 July 2024 1,515 0 View

Is this a scam?

UK's Well-online Science Press sent an invitation to be a co-author and offers a payment of $30 per review.

22 July 2024 1,695 8 View

How to transfect circular mRNA to T cells?

Hello! We are using LNP to deliver circular mRNA into T cells. However, compared with linear mRNA, the transfection efficiency and protein expression duration are similar. Are LNP generation or...

21 July 2024 4,322 1 View

When you express a protein, why do we express not only the domain we want, but also the protein around it?

I want to express STK4, and I've searched the paper for reference. When I check the protein kinase domain sequence for that kinase on Uniprot, it's 30-281, but the paper expresses the protein...

20 July 2024 4,951 1 View

The reason for breeding Loxp mice with FLPe mice?

I am planning to use CD4 Cre mice crossed with Loxp mice. However, the laboratory from which I am trying to get the loxp sperm says they have "the product of the EMMA ko crossed with the FLPe to...

16 July 2024 7,475 1 View

Why is serum-free media used when making cancer cell conditioned media?

I am preparing cancer cell conditioned media to study the effects of substances secreted by cancer cells on other cells. In some papers, conditioned media is prepared using FBS-containing media...

11 July 2024 7,063 1 View

Stable cell line generation: GOI is detected by qPCR but protein is not expressed?

Hello, I'm generating stable cell lines by transfecting plasmid DNA with lipofectamine 3000. The cells went through antibiotics selection for 3 weeks (polyclonal selection) and when I analyzed...

11 July 2024 4,812 5 View

NH3/NF3/H2 Remote plasma Oxi/nit selective etching mechanism help ??

Hello, I am an Etch Engineer. I am performing etching with high T_ox/Nit selectivity using remote plasma. Etching plasma is formed using only NH3/NF3/H2. 1. I wonder if it would be advantageous...

11 July 2024 8,115 2 View

Comparison of tissue to serum MS data?

Hello, So I have mouse brain tissue MS data from one of my predecessors and I have human serum data from the hospital that I collaborate with. We are trying to find markers for the diagnosis of...

11 July 2024 8,484 0 View

There is possible way to calculate experimental DOS from the UPS spectrum of the material. How to calculate the DOS from UPS?

Here, I have attached the UPS graph. I'm trying to calculate the DOS/DOVS from the UPS.

29 July 2024 4,971 1 View

Using a Jetson Nano with Waveshare UPS Module B in a car needing 8.4V/2A. How can I charge it using the car's system?

Hi everyone, I'm currently working on a project where we are using a Jetson Nano in a car, supported by a Waveshare UPS Module B for battery backup. To charge the UPS Module, we need a supply of...

19 May 2024 205 3 View

How to answer the reviewer question for XPS TEST?

Our data: Binding energy of the C 1s peak corresponding to CAC/CAH bonds in adventitious carbon, set at 285.0 eV. Monochromatic Al Kα radiation (hν =1486.6 eV) is used with the anode power set to...

31 March 2024 4,978 5 View

How can I convert kinetic energy to binding energy while analyzing data from an Ultraviolet Photoelectron Spectroscopy (UPS) measurement?

I have data in the form of intensity versus kinetic energy. I need to convert kinetic energy to binding energy. Ultimately, I need to calculate the work function and the position of valence band...

11 February 2024 8,741 1 View

How to calibrat the UPS binding energy scale of a non-conductive sample?

Recently, we submit a work on carbon dot-based electronic device to a journal. In the work, ultraviolet photoelectron spectroscopy (UPS) measurement was applied to determine the valence band...

26 January 2024 8,274 3 View

Issue on Smart Lab SE diffractometer (Rigaku) ?

Dear Colleagues, In recent weeks, I have suffered from an issue with the SmartLab SE Diffractometer (Rigaku). Last week, I started the equipment as usual and an error appeared; please see the...

09 January 2024 4,984 10 View

How to replace a failed battery in a string set?

Dear colleagues; I hope you are all fine. How do you replace a failed UPS battery in a string set? how would the new battery be matched to older batteries, as far as the life is concerned? since...

29 December 2023 9,426 1 View

Lead Acid Battery Cyclic voltammetry?

Dear friends and colleagues How can we measure the cyclic voltammogram for VRLA/UPS batteries? Is that possible to do that with conventional potentiostat, due to their high current? or do I have...

04 December 2023 6,580 1 View

Is there any tutorial available for the analysis of UPS data for perovksite films?

I tried to find, but didn't found any effective solution.

17 November 2023 1,105 3 View

Can Agilent 7100 Capillary Electrophoresis instrument be plugged in directly to a power source? Or it needs UPS?

13 November 2023 3,631 4 View

Jürgen Weippert

It looks to me like the red fit is just using two data points, is that the case? I wouldn't do that.

Unless you have a primary electron emission peak distorting the edge, the blue one is probably closer to the truth.

Christian Pettenkofer

The blue curve is giving a more correct result. In addition check if your sample is as exact as possible in normal emission. For off normal emission the edge may broaden. Also restrict the area observed by the spectrometer as areas from the sample holder may contribute as the spot from your He source isa rather broad.