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Tech Xplore / A new approach to enhance robot navigation in indoor environments

To effectively navigate their surroundings, robots typically plan paths based on pre-designed maps of the environment they are operating in and observations gathered by their sensors. While this type of navigation strategy ...

10 hours ago in Robotics
Phys.org / Floating magnetic microrobots for fiber functionalization

Minimally invasive surgery is increasingly used to target small lesions and a growing demand exists for miniaturized medical tools. These include microcatheters, articulated micro-forceps or tweezers to sense and actuate ...

13 hours ago in Nanotechnology
Phys.org / Stretched photons recover lost interference

The smallest pieces of nature—individual particles like electrons, for instance—are pretty much interchangeable. An electron is an electron is an electron, regardless of whether it's stuck in a lab on Earth, bound to ...

14 hours ago in Physics
Phys.org / Startled fish escape using several distinct neuronal circuits

A fast knee-jerk "ballistic" escape response and a more considered "delayed" escape response are mediated by distinct and parallel neuronal pathways in zebrafish, according to a study published October 15 in the open-access ...

7 hours ago in Biology
Phys.org / Last year's extreme snowfall wiped out breeding of Arctic animals and plants

In 2018, vast amounts of snow were spread across most of the Arctic region and did not melt fully until late summer, if at all. Publishing on October 15 in the open-access journal PLOS Biology, researchers documented the ...

8 hours ago in Biology
Phys.org / Piranha fish swap old teeth for new simultaneously

Piranha fish have a powerful bite. Their teeth help them shred through the flesh of their prey or even scrape plants off rocks to supplement their diet.

8 hours ago in Biology
Phys.org / New understanding of the evolution of cosmic electromagnetic fields

Next year is the 200 year anniversary of the discovery of electromagnetism by the Danish physicist H.C. Ørsted. Even 200 years after its discovery, the existence of electromagnetism still brings up new puzzles pertaining ...

9 hours ago in Physics
Phys.org / Analysis of Galileo's Jupiter entry probe reveals gaps in heat shield modeling

The entry probe of the Galileo mission to Jupiter entered the planet's atmosphere in 1995 in fiery fashion. As the probe descended from Mach 50 to Mach 1 and generated enough heat to cause plasma reactions on its surface, ...

9 hours ago in Astronomy & Space
Phys.org / From ribbon to scroll: Gaining shape control by electrostatics

Northwestern Engineering materials science researchers have uncovered new insights into how electrostatic interactions can be regulated to attain and control scroll-like cochleate structures, which could inform how to capture ...

8 hours ago in Chemistry
Phys.org / How status sticks to genes

Those at the bottom of the social ladder are known to live shorter and sicker lives than those at the top. And the stress of life at the bottom may have long-term health effects that even upward mobility can't undo, according ...

9 hours ago in Biology
Phys.org / New research suggests global ice age changed the face of the planet

Curtin University researchers have discovered that a global ice age more than 600 million years ago dramatically altered the face of the planet, leaving a barren, flooded landscape and clear oceans.

13 hours ago in Earth
Phys.org / Study 'cures' oldest case of deafness in human evolution

An international team of researchers including faculty at Binghamton University, State University of New York, has published a new study examining a 430,000-year-old cranium of a human ancestor that was previously described ...

9 hours ago in Biology