Astrophysicists are interested in tracing the development of large scale structure during the so-called Epoch of Reionization - the period in the history of the universe in which the first luminous sources turn on and ionize neutral hydrogen in their vicinity. Prof. Adam Lidz studies the theory of how to detect and gain information from radition emitted during this period.
Professor Alison Sweeney studies bio-optical properties of cephalopods and the cellular and biochemical mechanisms of dynamic camouflage.
DNA-Functionalized Carbon Nanotube Chemical Sensors
The group of Professor Charlie Johnson has developed chemical sensors using single-walled carbon nanotubes wrapped with single-stranded DNA adsorbed to the nanotube's outer wall.
Carbon Nanotube FET Sensor
Schematic of a carbon nanotube FET sensor functionalized with an antibody to a Lyme disease biomarker protein. The insulating substrate is shown in pink. When antigen molecules bind to the antibody, the electrical characteristics of the FET are altered.
From the lab of Prof. Charlie Johnson.
Professor Randall Kamien studies the physics and mathematics of kirigami — an extension of origami that allows cutting holes into the paper. By treating the sheet of paper as a two-dimensional crystalline lattice, the folds, cuts, and pleats, can be understood in terms of topological defects in the underlying structure.
common set of intricate cell surface patterns are observed in many different
kinds of organisms, from insects to plant pollen to fungal spores to eyelash
mite carapaces. These patterns are most famous in the popular imagination
when they’re found on pollen, and can be reticulate, hexagonal, striped, spiky,
knobbed, lobed, etc. To boot, the patterns definitely aren’t random - one
tree species will produce billions of nearly identical pollen cells within a
single tree and do so stably for millions of years - pollen is a great way to
identify things in the fossil record.
The Simons Foundation has just announced the
establishment of the Simons Collaboration on Cracking the Glass Problem,
bringing together an international team of scientists, including Professor
Andrea Liu, under the direction of Professor Sidney Nagel of the University of
Keisuke Yoshihara, a postdoctoral fellow in experimental
particle physics in the Department of Physics and Astronomy at the University
of Pennsylvania, received a "Young Scientist Award" at the 71st
Annual Meeting of the Physical Society of Japan, which took place 19-22 March
Dr. Yoshihara earned this recognition as a result of his
work as a graduate student at the University of Tokyo on the discovery and
subsequent study of the Higgs boson in the ATLAS Experiment at the CERN Large