Science brief
Nanoscale Motors and Cosmic Reconnection
Israeli researchers achieve breakthroughs in single-molecule mechanics and light-steered tunneling while the Energy Ministry targets nuclear fusion.
Science
Weizmann researchers turned a single molecule into a controllable electric turbine — opening a path toward petahertz molecular computing and frictionless nanoscale sensors.
BackgroundThe Archimedes screw has lifted water using a revolving spiral for more than two millennia, serving as a mechanical staple of classical engineering. Shrinking mechanical motors down to single molecules has long been hindered by thermal vibrations and quantum resistance.
- The research team led by Prof. Oren Tal suspended a single helical molecule between gold nano-electrodes at near-absolute zero temperatures, stabilizing its quantum states.
- Applying voltage above a defined threshold shifts the molecule into continuous rotation, opening hidden quantum conduction channels that amplify electrical current 100 times.
- Reversing the electrical polarity reverses the molecular rotation direction, establishing a workable blueprint for molecular-scale spintronic memories and ultra-sensitive bio-sensors.
Science
Technion physicists steered electron tunneling with lightwave precision — establishing the physical foundation for quantum microchips operating a million times faster than modern silicon.
BackgroundScanning tunneling microscopes use quantum tunneling to image individual atoms on surfaces by passing a tiny electrical current through an ultra-sharp needle. Controlling this tunneling with sculpted optical light pulses allows physicists to observe electron dynamics occurring at sub-femtosecond intervals.
- The experiment directed sculpted light pulses at a sub-nanometer vacuum junction, enabling researchers to steer directional electron bursts lasting 860 attoseconds.
- Supported by the Israel Science Foundation and Technion's Helen Diller Quantum Center, the technique unites atomic spatial resolution with sub-femtosecond timing.
- The underlying physics provides the foundational framework for building lightwave-driven quantum transistors capable of operating at petahertz switching frequencies.
Science
Black hole radiation storms share the exact magnetic mechanics of solar flares — proving magnetic reconnection scales identically across the entire universe.
BackgroundCoronal mass ejections and solar flares occur when tangled magnetic field lines on the Sun snap and violently reconnect, releasing intense bursts of high-energy X-rays. Astronomers have debated whether accretion disks surrounding distant supermassive black holes exhibit similar coronal physics.
- Analyzing X-ray observations from space observatories XRISM and XMM-Newton targeting galaxy NGC 3783, the team detected the hallmark Neupert timing effect.
- The Neupert signature, first identified on the Sun in 1968, demonstrates that particle acceleration directly drives subsequent high-energy coronal heating.
- The study confirms magnetic reconnection physics operates identically across an 8-order-of-magnitude mass difference between stars and supermassive black holes.
Science
Israel is drafting a ₪1B scientific blueprint for domestic nuclear fusion — aiming to anchor high-density computing and desalination against future power shortfalls.
BackgroundNuclear fusion replicates the energy-generating processes of the sun by fusing light isotopes into helium without creating long-lived radioactive nuclear waste. Commercializing fusion requires magnetic confinement reactors and advanced laser physics capable of achieving sustained net energy gain.
- The blueprint unites academic physics researchers across the Technion, Weizmann Institute, Hebrew University, and Soreq Nuclear Research Center into a national research consortium.
- The initiative allocates capital toward plasma confinement facilities, extreme-power laser research, and neutron-resilient reactor shielding materials to lay the groundwork for domestic experimental reactors.
- Ministry planners project domestic artificial intelligence infrastructure and desalination plants will strain Mediterranean gas supplies without next-generation nuclear baseload power.
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