by Laura Oleniacz February 1, 2021 .
RALEIGH – A soft, flexible sensor system created with electrically conductive yarns could help map problematic pressure points in the socket of an amputee’s prosthetic limb, researchers from North Carolina State University report in a new study.
In
IEEE Sensors Journal, researchers from North Carolina State University reported on the lightweight, soft textile-based sensor prototype patch. The device incorporates a lattice of conductive yarns and is connected to a tiny computer. They tested the system on a prosthetic limb and in walking experiments with two human volunteers, finding the system could reliably track pressure changes in real time.
Connecting Qubits with a Topological Waveguide
January 25, 2021•
Physics 14, 11
M. Schwartz/MIT-Lincoln Laboratory
Figure 1: Scheme of the photonic waveguide used by Kim
et al. [4]. The waveguide is an array of identical microwave resonators paired to form an
A-
B lattice (red and blue, respectively). In the topological phase, the waveguide has edge modes, whose wave functions (red and blue) extend in only one direction and over the sublattice comprising only one type of resonator (
A or
B). Qubits (represented with atom symbols) are coupled to each resonator. At the center of the waveguide, a qubit coupled to a site
A resonator (indicated by the arrow) creates a bound state (purple) that extends to the left and only couples to
Glass frogs that live near loud streams add to mating calls with the flap of a hand, a wave of a foot, or a bob of the head to attract a mate, a new study shows.
Researchers have documented these frogs that “dance” near rushing streams where noise can obscure those crucial love songs in the rainforests of India, Borneo, Brazil, and, now, Ecuador.
Conservation ecologist Rebecca Brunner, a PhD candidate at the University of California, Berkeley, discovered that the glass frog
Sachatamia orejuela can join the list of species that make use of visual cues in response to their acoustic environments. This is the first time researchers have observed a member of the glass frog family (
One reason it’s so difficult to produce effective vaccines against some viruses, including influenza and HIV, is that these viruses mutate very rapidly.
Glass frogs living near roaring waterfalls wave hello to attract mates
Most frogs emit a characteristic croak to attract the attention of a potential mate. But a few frog species that call near loud streams where the noise may obscure those crucial love songs add to their calls by visually showing off with the flap of a hand, a wave of a foot or a bob of the head. Frogs who “dance” near rushing streams have been documented in the rainforests of India, Borneo, Brazil and, now, Ecuador.
Conservation ecologist Rebecca Brunner, a Ph.D. candidate at the University of California, Berkeley, has discovered that the glass frog