What technologies exist to electromagnetically couple low-power energy systems?

Biological systems generate electrical pulses that are transferred throughout the body by different means (nervous system, cellular connection, etc.). Essentially bodies function based on the...

09 October 2018 1,612 1 View

Invasive devices are being used to stimulate organs in the body. What frequencies, voltages, and pulse lengths are being used?

There are a lot of invasive technologies in use today that are used to stimulate organs, the nervous system, the brain, and pain receptors in the body. One example, would be a device that...

02 March 2018 9,901 3 View

There are many antennas out there. I want to broadcast a signal that only one would receive. How can I do this?

04 May 2016 5,524 7 View

Is anyone doing research on the extraction of biological signals using atomic magnetometers positioned remotely (>10cm) from the body?

Recent research has enabled EEG readings with a sensor 4mm away from the skin: https://www.osapublishing.org/boe/abstract.cfm?uri=boe-3-5-981 In 2013, an extremely sensitive atomic magnetometer...

11 December 2015 8,816 3 View

What is the smallest antenna that could be used to transmit a 20Hz signal if you used a fractal antenna and pulsed RF signal?

Fractal Antenna:https://en.wikipedia.org/wiki/Fractal_antenna http://www.antenna-theory.com/antennas/fractal.php Pulsed...

09 October 2015 3,329 5 View

If the organs work at unique frequencies and magnetic field can be made in the brain using RF, could we use specific RF frequencies to target organs?

...

09 October 2015 9,591 0 View

Remote reading of biological signals in an open-unshielded environment

Current technologies restrict the speed biological research can be conducted. The majority of research requires invasive procedures (time consuming and prone to health risk). The adoption rate of...

01 January 1970 7,354 2 View

flexibility of polymers chain

effect of double bond on the flexibility of polymers

07 April 2021 0 0 View

Formulation of polymer color flakes

I am writing to request some information for making polymer color flakes. I would appreciate the help.

17 March 2021 0 0 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

How to analyze a particular region of my simulation box in GROMACS?

Hi, I am using GROMACS 5.1.4 to simulate water in contact with a surface. I am only interested to calculate some properties of water near the surface. Let's say at a distance of x nm from the...

03 March 2021 9,989 2 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

I have designed reflectarray element and feeding it though Horn Antenna on HFSS. After full wave simulation, I am not getting desired results?

I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. After full wave simulation, i am not getting desired results i.e Radiation pattern...

01 March 2021 9,701 5 View

How Can I bring as much common elements in steel as possible to calculate stable phase(s) in OpenCalphad?

As I was tweaking step-by-step OpenCalphad6 Macros step1.ocm involving phase and thermal property calculation of a High-speed steel, I could not incorporate more than 6 elements in the steel...

01 March 2021 8,840 1 View

How can you bring two structures together to create an adhesive bond in LAMMPS?

I have created an Ice 1h crystalline structure and an Aluminium substrate structure and equilibrated both at 250K. Now I need to bring them together in a way that an adhesive bond is created....

01 March 2021 3,325 2 View