Category: Tips

Soft raw materials

A UK postdoc came to our lab in the US and was surprised that we didn’t have any Blu-Tack in the lab. His old lab wasn’t the only UK lab that goes through…



Structured illumination

Structured illumination can be used to increase the resolution of wide field fluorescence imaging. The idea is best motivated by thinking about Moire fringes. In panel (a) below, if you stand away from…



Some OSX programs & tips

This is just a quick post to highlight a few Mac OSX programs & tips that you might find useful.

Programs

Default Folder – This is how all save file dialogs should work. Watch…



Troubleshooting Fluorescence Microscopy

Jim Pawley upgraded the 39 Steps from a simple MacGuffin to a classic checklist for troubleshooting fluorescent microscopy images. Now 10 years old, it remains very relevant. It covers thirty-nine different parameters…



Shapeways – Cheap 3D printing

Shapeways is geared towards the arts and crafts crowd, so they don’t offer the professional options a place like Quickparts does. But they do offer very competitive prices. In particular, if you…



Color-code terms in equations

This is such a simple and powerful trick, I don’t know why I hardly ever see it used. When giving an equation during a talk or in a paper, typically that equation is best understood as a series of terms. Those in your audience who are familiar with the terms, like yourself, will instantly recognize…



Open Science Summit: This weekend

Thursday through Saturday this week, there is an Open Science Summit in Berkeley. The schedule includes Josh Perfetto from the OpenPCR group I’ve mentioned before, Martha Bagnell from The Third…



Street fighting mathematics

Physicists have a very unsentimental way of manhandling mathematics. In addition to setting up dimensionally inconsistent equations for order-of-magnitude estimations, they like to take lots of short cuts that make computations fast and…



Daltonize your figures for the colorblind audience members

I’m revising figures for a paper right now and the editors suggested I avoid red-green color schemes. In the US, 7% of men are colorblind, usually red-green colorblind. The editors suggested …



Cleaning objectives and other optics

Microscope objectives, in particular, the water-dipping variety so common in physiology and imaging labs, get dirty. Salts build up on them, traces of drugs stick to them, and biological membranes accumulate. It’s best…



Intrinsic imaging tips

Intrinsic signal optical imaging is a functional imaging modality where the reflectance of red light indicates active portions of cortex. It is used for many applications, including imaging individual barrels in rodent…



Catalogs as textbooks

Many manufacturers distribute catalogs that include extensive tutorial sections. You could really teach a pretty extensive engineering course on optics using nothing more than the front pages of the CVI Melles Griot catalog. In this post I’ll point you to some of…



Tips for 3D printing

When you want a custom plastic piece fast (and the design isn’t amenable to being made out of multiple flat laser cut pieces) then 3D printing is the way to go.

3D printing is actually a whole family of different processes: SLS,…



Tips for laser cutting


It’s not too hard to find a laser cutting firm that will do small orders and offer very rapid turn around. The precision, quick turn around, and the ability to work without proper…