Can accelerometer based wearable motion sensors be used to detect motion of fingers or a flex sensor is best suited for this?

I want to detect relative movement between fingers with wearable sensors. Which could be an appropriate technology for this?

31 December 2018 2,443 3 View

Can someone suggest me good book dealing with simulation of optoelectronic devices?

I am looking for a book to learn simulation of mostly semiconductor optoelectronic devices.

09 October 2018 351 0 View

What are practically achievable range and data rate for LoRa, SigFox and other IoT technologies?

If anyone has tested these IoT technologies in outdoor environment, could you please help me with max range and data rate that is actually achievable? I feel there is lot of difference between...

04 May 2018 1,299 0 View

What is the most suitable transceiver module for line of sight wireless transmission in 10 kms range?

I want a wireless transceiver module for remote sensing application with range about 10km. Xbee would not be sufficient. Can anyone suggest an alternative?

03 April 2018 5,651 10 View

Could anyone suggest some good journal to submit a purely theoretical work on semiconductor optics?

My work is related to theoretical modeling of a phenomenon in semiconductor lasers and I want to submit it in a reputed journal. Most journals in optics and photonics require experimental work....

02 March 2016 1,335 5 View

What is the physical significance of 'k' in a E-k diagram of a semiconductor?

What does 'k' refers to in a E-k diagram ? Is it a wavevector or something else?

01 February 2016 702 10 View

Is there any way other than "fft" to find the frequency content of a signal in Matlab?

I have complex values of a periodic signal which is clearly visible in time domain. But I want to find its frequency content ? FFT is not working with me and I am looking for alternate ways to...

11 December 2015 9,192 20 View

Can anyone suggest some good papers or books to study Optical Waveguide Analysis?

I want to learn optical waveguide analysis using methods such as FD, FDTD, BPM and EIM, but I am not sure how and where to start ? Any guidance will be helpful.

09 October 2015 285 11 View

How can the random noise sources like Angle Random Walk in a semiconductor gyroscope be theoretically calculated?

Is it possible to theoretically predict the magnitude of random errors in semiconductor ring laser gyros?

08 September 2015 6,951 0 View

Can someone suggest me a good tool for simulating Semiconductor Ring Lasers?

I want to simulate both integrated and bulk fiber-optic semiconductor ring laser. Which of the tools e.g. Lumerical, Comsol, OptiFDTD will be most useful to me?

08 September 2015 4,701 1 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 Eliminate cosine error and abbe error in LASER measurement system(for example Rhenishaw XL80)?

I like to do project in laser measurement system. My objective is to eliminate or reduce the cosine error, abbe error in Laser measurement system. I have Rhenishaw XL80 system. Please tell the...

28 February 2021 4,890 3 View

How can we limit artifacts caused by rotation in fiber photometry?

We are trying to run fiber photometry experiments for long time scales, but we get these sinusoidal artifacts that come up. We think they may be caused by twisting of the fiber optic subject...

25 February 2021 568 1 View

How to measure angle between laser travel path and machine axis in Laser Measurement system?

25 February 2021 1,987 3 View

How the Ground Plane implantation is performed without damaging (and w/o varying the undoped nature) the top Si (8-10 nm) in FDSOI technology ?

It is a general practice to introduce Ground Plane in FDSOI devices under the BoX. The Ground Planes are introduced by Ion Implantation through Top Si layer and Buried Oxide. I wanted to know that...

24 February 2021 5,974 4 View

Can a semi-conductor material have different absorption coefficient?

Does the absorption coefficient of the semiconductor changes with the change in the structure of the semiconductor? If you have a thin film and nanowire of the same semiconductor, will the...

23 February 2021 9,799 4 View

How can I simulate the optical absorption spectrum of a biomaterial (like DNA or protein) in COMSOL?

I need to simulate the optical properties of a biomaterial, namely DNA, in COMSOL. Basically I need to simulate the IR absorption spectrum of a cylinder filled with a 'concentration' of DNA. I am...

21 February 2021 3,043 3 View

How do I collect online measures in a same-different task?

The same-different task requires to subjects to indicate whether a pair of stimuli seen or heard are the same (say AA or BB) or different (say AB or BA). Researchers often collect offline measures...

20 February 2021 9,226 2 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

Can I get the design of circular cylinder to fix thermocouple on the surface and cartridge heater in core ?

Respected Scientific Community. I'm interested to carry out experimental studies on a circular cylinder. But even after doing literature review I unable to get the exact design of the cylinder...

10 February 2021 6,221 1 View