Lifeboat Foundation

The realization of reconfigurable modular microrobots could aid drug delivery and microsurgery by allowing a single system to navigate diverse environments and perform multiple tasks. So far, microrobotic systems are limited by insufficient versatility; for instance, helical shapes commonly used for magnetic swimmers cannot effectively assemble and disassemble into different size and shapes. Here by using microswimmers with simple geometries constructed of spherical particles, we show how magnetohydrodynamics can be used to assemble and disassemble modular microrobots with different physical characteristics. We develop a mechanistic physical model that we use to improve assembly strategies. Furthermore, we experimentally demonstrate the feasibility of dynamically changing the physical properties of microswimmers through assembly and disassembly in a controlled fluidic environment. Finally, we show that different configurations have different swimming properties by examining swimming speed dependence on configuration size.

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A result from an experiment in Hungary catches the attention of a group of theorists in the United States.

NASA researchers suggest sea levels may be plunging around Greenland because of ice loss and a resulting decline in gravitational pull.

This anti-drone rifle can shoot down any drone.

“An increasing number of US landowners want to build commune-style villages that are completely self-sufficient and have a low carbon footprint”

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Gear & Gadgets —

Transistors will stop shrinking in 2021, but Moore’s law will live on.

Final semiconductor industry roadmap says the future is 3D packaging and cooling.

Binary black holes recently discovered by the LIGO-Virgo collaboration could be primordial entities that formed just after the Big Bang, report Japanese astrophysicists.

If further data support this observation, it could mark the first confirmed finding of a primordial black hole, guiding theories about the beginnings of the universe.

In February, the LIGO-Virgo collaboration announced the first successful detection of gravitational waves.

Continue reading “Did the LIGO gravitational waves originate from primordial black holes?” »

Long-term human colonization of Mars is feasible, as long as Red Planet pioneers “live off the land,” a recent NASA report concludes.

“There are massive resources on Mars obtainable from the atmosphere and extracted from the regolith which are capable of supporting human colonization,” write the authors of the report, which is called “Frontier In-Situ Resource Utilization for Enabling Sustained Human Presence on Mars.”

Using Martian resources, existing technologies could supply water, oxygen, fuel and building materials, the report adds, “to relax the dependence on Earth during the buildup of a colony on Mars.” [Red Planet or Bust: 5 Crewed Mars Mission Ideas].