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$LAYYYTER
JBB: An Artblog!
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@egenriether
Micromagnetic simulation and animation in MATLAB modeling discrete nanoparticles under the macrospin approximation. The particles are interacting with Heisenberg exchange, dipolar fields, and Zeeman energy terms. Note how the spacing of the particles reduces the exchange effect and results in a decoherent spin structure
Two images (24″ x 30″) painted with india ink on book paper. The book paper was first adhered to a painting canvas.
Proxie is a telepresence robot designed and built from scratch. It is still under development. It uses 2 color cameras for eyes which wirelessly relay a stereoscopic (side-by-side) image to a virtual-reality style helmet also built from scratch. The helmet has a 1280x800 resolution video display, a Parallax Propeller microcontroller and an inertial measurement unit for real-time head tracking. It uses Xbee antennas for RC control.
To see pictures during design and construction, click here: http://www.egenriether.com/proxie.html
These are animated Finite-Difference Time-Domain (FDTD) simulations I've created in MATLAB. The modeled structure is a rectangular resonating cavity with perfectly conducting (PEC) walls. 3 Gaussian electric field pulses are defined at variable points in the cavity and propagate as electromagnetic waves. This cavity is half filled with a lossy dielectric (relative permittivity 4.2, conductivity 1S/m). It can be seen that the waves die out as they travel to the back of the structure along the y-axis and enter the lossy dielectric. This results in x-traveling waves only in the front of the structure. In the code these parameters are all variable.
The simulation presented here is an animations of the x-component of the electric field on a horizontal slice at about the midpoint of the x-axis, giving a sample of the y-z plane. Since the walls are PEC it is seen that the x-component of the E field is identically zero at the boundaries.
Download the MATLAB file here: http://www.egenriether.com/fdtd.html
These are Finite-Difference Time-Domain (FDTD) simulations I've created in MATLAB. The modeled structure is a rectangular resonating cavity with perfectly conducting (PEC) walls. 3 Gaussian electric field pulses are defined at variable points in the cavity and propagate as electromagnetic waves. Two different discretizations of the computational domain are shown the two different pulse widths. In the code these are all variable along with all other parameters.
The simulations presented here are animations of the z-component of the electric field on a horizontal slice at about the midpoint of the z-axis, giving a sample of the x-y plane. Since the walls are PEC it is seen that the z-component of the E field is identically zero at the boundaries.
Download the MATLAB file here: http://www.egenriether.com/fdtd.html
Proxie is a tele-existence robot I am developing. It has a ways to go, but you can see it in action here:
https://www.youtube.com/watch?v=BkqUSv3Ih88
For more photos and info go here:
http://www.egenriether.com/proxie.html
A portrait of Kelly, which I made from Paris Metro maps.
Drawings by Brian Egenriether inspired by the art of B. Hogarth
A picture of my Gear Ball puzzle by Mefferts. Picture was color edited with Color Splash app on iPhone.
A mural of the Eiffel Tower in perspective I did in my dining room. It’s roughly 7 feet tall and took about 12 hours. It’s done in black wall paint with a standard house painting brush.
A mural of Einstein I did on my garage wall (I went a little Jackson Pollock at the end...)
Pictures of my workshop
Comics I made from family photos
Made With Paper, drawn on iPad
I recently made some modifications to the machine I invented that sorts Skittles, m&m's, Reese's Pieces, etc. The device is made from an epoxy that I formed and machined, as well as parts from an old telescope, hummingbird feeder, some PVC, metal brackets, and ceramic bowls. The video and more info about the machine can be found here:
http://www.youtube.com/watch?v=CZ08XF634w4
by Brian Egenriether
cherry bomb by Brian Egenriether