Car-camping Breakfast Burritos

Makes 4 small-med burritos
  • 3 small white potatoes
  • 1/2 onion
  • 1/2 green pepper
  • knob of sharp cheddar
  • few spoonfuls salsa
  • 1/4-1/3 ib chorizo
  • 6 eggs
  • 4 tortilla
  • few tablespoons of oil
  • hot sauce
  • fresh diced tomato (optional)
  • sour cream (optional)
Works best with 2 burner coleman stove, cast iron pan and a pot, and 1 spatula.
slice thinly the potatoes and chop up. fry a bit with some oil, then after a bit add the onion and green pepper. cook for 10 mins or so till done, remove from pan and keep warm in bowl. mix w salt (2 packs of in-n-out salt worth) and pepper if you have it. Chop up cheddar while cooking.
Add chorizo to pan w bit of oil, cook and chop up. crack all the 6 eggs into chorizo and scramble and cook till done. put in other bowl and keep warm.
assemble in tortilla, wrap and fry in the cast iron pan w a bit of oil, tunr once after browning and crunchy. this is the most important step.

Hard vs Soft Fibrillar Self-Cleaning

My paper on the self-cleaning of gecko adhesives was published in Applied Materials and Interfaces. We reported that for certain particle sizes and fiber diameters, both hard (polypropylene) and soft (PDMS) fibrillar adhesives recover adhesive capabilities to different degrees. An analysis of the contact strength between fibers, particles and substrates reveals that dry self-cleaning is more effective for smaller fiber diameters and smaller loss functions, such as hard thermoplastics.


Yosemite in April

After getting some better beta on our plans to climb the E couloir of Split Mtn, we decided to bail. Luckily I was able to find some partners and head up to Yosemite Valley for some climbing – not such a terrible substitute.

I managed to get in about a dozen routes, climbing at church bowl saturday, and El Cap base sunday. And of course, like any good yose weekend trip, we finished it off with dinner at La Costa in Oakdale.


John leading the last couple moves of a 5.7 chimney at the base of El Cap.

IMG_0187-002Me finishing up at the anchor.


Magnetically Actuated Ridges

My recent work on magnetically actuating an array of microridges has been published in Advanced Functional Materials. We have shown that by controlling the angle of the 325 micron long array elements, we can controllably adhere to a range of particle sizes.


Ridge angle can be controlled via an external magnetic field.


Magnetic particles are mixed and cured into the liquid PDMS during casting, and aligned during curing by an external magnetic field.

Here is a link to the article: