2020 Small World in Motion Competition

Crystallization of a callus removal solution

Wojtek Plonka

Location
Krakow, Malopolskie, Poland
Technique
Polarized Light
Magnification
6.3X (Objective Lens Magnification)

The 5th place movie shows crystals from an over-the-counter callus remover growing as moisture is removed from the sample. Although Mr. Plonka’s main work involves computer simulations in chemistry (primarily for the purpose of drug design), he enjoys capturing stunning images of crystallization through the microscope as a sideline. Callus remover, which is a combination of lactic acid and salicylic acid, is a particularly popular sample due to its ability to crystalize into beautiful structures. It does require practice and talent to capture crystallization at this quality. From an equipment perspective, however, callus removal solution crystals can be observed with a standard high school science laboratory microscope.

Fluorescent actin (Lifeact-EGFP) expressed in an embryonic rat hippocampal neuron

Dr. Andrew Moore Dr. Pedro Guedes-Dias

Affiliation
Howard Hughes Medical Institute (HHMI)
Janelia Research Campus
Ashburn, Virginia, USA
Technique
Confocal
Magnification
100X (Objective Lens Magnification)

Dr. Andrew Moore captured this stunning video of neurons in an embryonic rat using a confocal microscope and fluorescent actin (Lifeact-EFGP) and is part of a larger experiment that set out to observe actin dynamics during neurite outgrowth. This movie was a combination of efforts which began with the transient transfection of a fluorescent actin sensor in to the neuron. Often the efficiency of this process is quite low so the next efforts required being able to optimize the microscope system to visualize the expression shown. In the end, it was all worth it, since this was the first time Dr. Moore had witnessed Neurite outgrowth. And of course, winning 4th Place in the Nikon Small World in Motion competition was an added bonus!

Morphing melanoma cells (alpha-Actintin shown in yellow; actin in red)

Dr. Gregory Adams Jr.

Affiliation
National Institutes of Health (NIH)
NHLBI
Bethesda, Maryland, USA
Technique
Confocal
Magnification
60X (Objective Lens Magnification)

This movie spectacularly shows morphing melanoma cancer cells (in red and yellow). It was captured using spinning disk confocal imaging technology with cancer cells that were transfected with fluorescent fusion proteins and placed on a PDMS BSA coated coverslip (a patterned coverslip designed to control the movement, growth and adhesion of the organism). Dr. Adams studies cancer as a cell biologist and microscopist. Although Dr. Adams says that he partially chose this image to bring to Small World in Motion because of its visual aesthetics, he also felt the subject matter might spark the interest of younger people in science.