Many motile cells exhibit migratory behaviors, such as chemotaxis (motion up or down a chemical gradient) or chemokinesis (dependence of speed on chemical concentration), which enable them to carry ...

Photonic crystals—a class of materials whose optical properties derive from their structure in addition to their composition—can be created by self-assembling particles whose sizes are comparable to ...

An antique-looking black-and-white photo of a group of about 100 people, mostly men in suits, standing and sitting in front of a building. Some attendees at the first National Colloid Symposium at the ...