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Home»Science»We will use peculiar sugar within the seek for darkish matter
Science

We will use peculiar sugar within the seek for darkish matter

VernoNewsBy VernoNewsOctober 18, 2025No Comments3 Mins Read
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We will use peculiar sugar within the seek for darkish matter
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A skinny crystalline movie of desk sugar, or sucrose, captured in a polarised gentle micrograph

KARL GAFF/SCIENCE PHOTO LIBRARY

Scientists have confected a brand new option to seek for darkish matter utilizing large crystals of sucrose, or desk sugar – although, to date, they’ve discovered solely the bittersweet style of an absence of outcomes.

We consider that darkish matter exists based mostly on the unusual gravitational pull it seems to exert on galaxies, however regardless of a long time looking for attainable darkish matter particles, scientists have discovered nothing. Many of those searches seemed for weakly interacting large particles (WIMPs), which had been lengthy considered among the many most promising darkish matter candidates. However even essentially the most delicate searches got here up empty handed.

Most WIMP detectors search for flashes of sunshine {that a} passing darkish matter particle may produce when it interacts with common matter, however this assume the particles are sufficiently massive, round 2 to 10,000 occasions the mass of a proton. That is what would clarify darkish matter’s galactic results most clearly, however additionally it is attainable that WIMPs are lighter, despite the fact that this matches extra awkwardly with the speculation.

Now, Federica Petricca on the Max Planck Institute for Physics in Munich, Germany, and her colleagues have looked for these lighter WIMPs utilizing a detector comprised of sugar crystals cooled to excessive temperatures.

Very gentle WIMPs ought to work together most clearly with very gentle atoms, like hydrogen, however utilizing pure hydrogen as a detector is tough due to its low density, decreasing the probabilities of an interplay. Sucrose, nevertheless, incorporates 22 hydrogen atoms on every molecule, at a far larger density than pure hydrogen.

Petricca and her staff first grew crystals of sucrose from a concentrated sugar answer over a interval of every week, earlier than reducing the temperature of the crystals to seven thousandths of a level above absolute zero. They then watched for attainable darkish matter interactions by in search of tiny will increase in warmth, utilizing an ultrasensitive thermometer, and flashes of sunshine, utilizing a photon sensor.

The researchers ran their experiment for 19 hours and, whereas the sugar crystals did gentle up at ranges in line with bigger particles, they didn’t measure any weaker detections that might have been produced by a WIMP.

The sugar crystals have been set as much as search for attainable darkish matter interactions with exceptional sensitivity, says Carlos Blanco at Pennsylvania State College, and so they might permit researchers to see extraordinarily small recoils from gentle WIMPs. Nevertheless, it isn’t clear whether or not the experiment is ready to successfully rule out different attainable sources lighting up the crystals, such because the radioactive carbon-14 that’s generally discovered in lots of sugars.

New Scientist. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

CERN and Mont Blanc, darkish and frozen matter: Switzerland and France

Put together to have your thoughts blown by CERN, Europe’s particle physics centre, the place researchers function the well-known Giant Hadron Collider, nestled close to the charming Swiss lakeside metropolis of Geneva.

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