Petrographic Apps for iPhone?

I getting a convergence problem while simulating p-GaN/AlGaN/GaN multiple quantum well solar cell. How can I solve it?How to set the gate work function value?please help me!!!

Solid state Physics

Material science

Nanomaterials

Characterization

Analysis

Writing

Describe and dissucation the results

what aim of the Au@Cds core/shell

Dear Researcher

I am working with an Laser Doppler Vibrometer (LDV) to measure the natural frequencies and mode shapes of concrete bridges. While I have successfully applied LDV in the lab and on pedestrian cable bridges under controlled conditions, I now face a challenge when testing highway bridges.

🔹 The Challenge: For certain bridge tests, it is not possible to position the vibrometer aligned with the vibration direction. As a result, the measured velocity component is along the laser beam direction, rather than the actual vibration velocity. This misalignment introduces errors in the frequency and mode shape estimations.

Key Questions for Discussion:

-Who has experience using LDV for bridge measurements, particularly in real-world conditions where perfect alignment is not possible?

-What methods have you used to correct the measured velocity and convert it into the true vibration velocity?

-Are there practical techniques, such as angular correction formulas or software adjustments, that you have successfully applied?

📌 Your Insights Matter!

If you have worked with LDV for bridge monitoring or have expertise in overcoming angular deviations, I would greatly appreciate your input. Sharing your experiences, methodologies, or references to relevant studies will be highly valuable.

Looking forward to an engaging discussion!

if you have any paper explain the phenomena could you please share?

Hi everyone!

A couple of years ago I have been trying to conduct a Sentaurus TCAD simulation of an experiment for determination of internal gate resistance of a MOSFET. Unfortunately, all I got was Rg = 1...100 mOhm at Vgs = 0 and f = 1 MHz which is obviously incorrect because typically Rg = 1...20 Ohm according to datasheets on the commercial devices. Just out of curiosity, is there a way to correctly set up this type of TCAD analysis?

Dear responsable,

I wish if you correct the head of laboratory Analytical sciences Materials and environnement is not AHCEN BOUCHEMMA but this is me professor Assia SID,

Waitting your response as soon as possible

Best regards