レーザーで保持された微粒子を用いて、個々の粒子が及ぼす圧力を直接測定する新しい装置が開発された。イェール大学の研究チームによって開発されたこのツールは、極限的な真空状態での研究を前進させ、ステライルニュートリノのような未発見の粒子の探索に貢献する可能性がある。
Yu-Han Tseng氏らは、一部のウイルスのおよそ半分のサイズの小さなシリカ球体を核とする装置を開発した。レーザー光が電磁力によってこの球体を所定の位置に保持し、粒子が衝突すると球体が動き、検出可能な光信号が反射される。研究チームが超高真空中で3種類の気体の粒子を導入してこの装置を検証したところ、観測された動きは圧力計算に関する理論的な予測と一致することが確認された。
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Physicists at MIT have developed a new microscope using terahertz light to directly observe hidden quantum vibrations inside a superconducting material for the first time. The device compresses terahertz light to overcome its wavelength limitations, revealing frictionless electron flows in BSCCO. This breakthrough could advance understanding of superconductivity and terahertz-based communications.
Physicists with the STAR collaboration have observed particles emerging directly from empty space during high-energy proton collisions at Brookhaven National Laboratory. The experiment provides strong evidence that mass can arise from vacuum fluctuations, as predicted by quantum chromodynamics. Quark-antiquark pairs promoted to real particles retained spin correlations tracing back to the vacuum.
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Chinese researchers unveiled a gravity detector using a superconducting quantum interference device (SQUID) last month, achieving world-leading precision in a compact design usable outside labs. According to a Chinese Academy of Sciences (CAS) report, it measures tiny gravity shifts to detect objects. The technology brings China closer to spotting patrolling nuclear submarines.
Researchers at East China Normal University have developed a new imaging technique that captures ultrafast events in trillionths of a second, revealing both brightness and structural changes in a single shot. The method, called compressed spectral-temporal coherent modulation femtosecond imaging (CST-CMFI), tracks phenomena like plasma formation and electron movement. Yunhua Yao, the team leader, described it as a major advance for physics, chemistry, and materials science.
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Researchers at MIT have discovered that chaotic laser light can self-organize into a highly focused pencil beam, enabling 3D imaging of the blood-brain barrier 25 times faster than current methods. The technique allows real-time observation of drugs entering brain cells without fluorescent tags. This breakthrough could speed up development of treatments for neurological diseases like Alzheimer's and ALS.