Are there any insitu particle counting methods in gas flow at low pressure (less than 1 torr)?

26 July 2013 0 6K Report

Except optical particle counters where the detection sensitivity is limited to 150nm particle size. Please let me know if there are optrical particle counter which can detect sub 100 nm particle size.

Badges
Science topic

More Vibhu Jindal's questions See All

Please provide a research abstract on narcissism?

Baumeister

16 March 2024 4,525 2 View

Is anyone here who have access to Bloomberg terminal?

Actually I want to collect macroeconomic announcement and variable data for India but I don't have access to Bloomberg. I urgently need it. Please help me to get the data...i shall be very...

11 February 2024 3,213 0 View

How the value of surface roughness influence the slurry erosion of the substrate?

Respected Mates I Have deposited the Cr2O3 coating on the CA6NM turbine steel with D- gun spray method. The obtained value of RA Surface roughness is 3.3 +-0.1 after the coating. I want to...

24 October 2023 7,586 0 View

How to design a 2D photonic crystal based bandgap material on CST?

What are steps involved to design a 2D photonic crystal based bandgap material on CST

01 March 2023 7,172 0 View

Equally weighted portfolio is better or market cap weighted portfolio?

Fama and french calculated value weighted portfolio return while framing SMB, HML and WML factor. But why not equal weighted portfolio returns because I think equal weighted portfolio have more...

12 December 2022 6,268 2 View

What is the need of calculating yearly alpha according to this paper?

I want to identify whether stocks has postive alpha or negative alpha based on carhart four factor model. I calculated smb, hml and wml factor daily series. And then run a regression by taking...

04 December 2022 3,697 3 View

How to calculate total return while creating portfolio for fama french 3 factor model?

I have a paper which calculate total return including dividend payment. I have data of dividend per share and their announcement date, record date and ex-dividend date for all companies in bse...

30 November 2022 5,087 0 View

What is the difference between structural change or shift and Regime shift?

I wan to understand the difference between structural shifts in the time series and regime shift in the time series. Both are time varying models.

25 November 2022 7,393 5 View

Does time series needs to be non- stationary while applying Markov regime switching model?

Since Markov regime model is time varying model and regime can be made through variance switching ....and if it's time varying variance then how can we test for stationarity of the...

25 November 2022 8,481 0 View

From where to download the daily 91-day t- bill rate for the previous year for the Indian stock market?

I have got weekly auction data of 91-day t bill along with date of issue and cut-off implicit yield. I have read one paper they converted this data into daily by dividing the yield by number of...

19 November 2022 4,696 4 View

Which distribution type should I use when calculating the average particle size from TEM image? and how to calculate the error ?

average particle size calculation from TEM

04 August 2024 2,921 1 View

Who of all the Global Scientific community will help me Prof. Dr. Yoshida make way for TPEOM, MEC ~EMC to return the atmospheric gases to the norma ?

TEP presentation caption (The Environmental Project) Re: Why should Washington’s DC, or any country government point of location think of as nowadays of as to being 'tomorrow as to come! if it...

03 August 2024 2,484 1 View

How to load and plot 2D-PIV (particle image velocimetry) recorded velocity vector field in Techplot?

Dear Researchers I need to know, how to load and plot 2D-PIV (particle image velocimetry) recorded velocity vector field data in Tecplot? Thank You

02 August 2024 3,615 1 View

Does the delta function actually make sense to use on point particles?

The delta function seems produce logical contradictions when analyzed on a fundamental level. I would be curious if anyone else agrees.

31 July 2024 10,109 3 View

¿Are oxygen vacancies in semiconductors capable to change the band gap?

Dear all! Oxygen vacancies do raise negatively the Fermi level by increasing the negative charge in the semiconductor crystal structure. In the case of n-type semiconductors, I wonder if this...

30 July 2024 8,339 2 View

Simulation of metal drawing by Abaqus with UMAT?

Hello, colleagues. Recently, I have been working on a metal processing simulation with my UMAT in Abaqus. I have outlined the corresponding simulation, but I keep encountering issues that cause...

30 July 2024 7,062 1 View

How to build my own lab made four point probe set up?

Hello, I'm trying to measure the conductivity of semiconductor films but since I don't have a commercial four point probe set up I would like to build one on my own in my lab. I have generators,...

30 July 2024 906 2 View

Does post-translational protein modification cause devisions on observed pI verses calculated pI?

In running two-dimensional gel electrophoresis on bacterial protein, some spots that appear to match a protein sequence have a significantly more acidic isoelectric point than the calculated pI....

24 July 2024 8,076 3 View

What are the modern methods for detecting nanoparticles?

Some of the techniques I am familiar with are standard. I would like to know which of the two methods under study is preferable, as well as the cost and list of particles and devices needed in...

22 July 2024 1,921 3 View

Can a shoot-through event of a tri-state digital buffer cause momentary Hi-Z state?

// interested in the difference between floating events and short circuits.

22 July 2024 6,565 0 View