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Atomic clocks are the world’s most precise timekeepers. Based on periodic transitions between two electronic states of an atom, they can track the passage of time with a precision as high as one part ...
Solid, liquid, or gas? Technique quickly identifies physical state of tissues and tumors（图）
技术快速识别 肿瘤 癌症诊断
2023/6/19
As an organism grows, the feel of it changes too. In the initial stages, an embryo takes on an almost fluid-like state that allows its cells to divide and expand. As it matures, its tissues and organs...
Century-old problem solved with first-ever 3D atomic imaging of an amorphous solid（图）
Century-old problem solved first-ever 3D atomic imaging amorphous solid
2021/4/16
Glass, rubber and plastics all belong to a class of matter called amorphous solids. In spite of how common they are in our everyday lives, amorphous solids have long posed a challenge to scientists.Si...
Genetic material packaged inside cells is more solid than liquid（图）
Genetic material packaged inside cells more solid than liquid
2021/1/18
Biochemists have helped answer a fundamental question that has lingered since the discovery of DNA: Is chromatin -- the complex package of DNA and proteins in the nucleus of our cells -- a solid or a ...
Scientists at the Max Planck Institute for Chemical Physics of Solids in Dresden, Princeton University, the University of Illinois at Urbana-Champaign,and the University of the Chinese Academy of Scie...
‘Gyroscope’ Molecules Form Crystal That’S Both Solid And Full Of Motion（图）
Gyroscope Molecules Form Crystal Both Solid Full Of Motion
2018/1/31
Molecular machines, much smaller than single cells, may one day be able to deliver drugs to kill cancer cells or patrol your body for signs of disease. But many applications of these machines require ...
Solid-state proteins maximize the intensity of fluorescent-protein-based lasers（图）
Solid-state proteins fluorescent-protein-based lasers
2014/12/30
The same research team that developed the first laser based on a living cell has shown that use of fluorescent proteins in a solid form rather than in solution greatly increases the intensity of light...
Scientists do glass a solid--with new theory on how it transitions from a liquid（图）
theory liquid
2014/12/1
How does glass transition from a liquid to its familiar solid state? How does this common material transport heat and sound? And what microscopic changes occur when a glass gains rigidity as it cools?
Quantum communications boosted by solid memory devices（图）
Quantum communications solid memory devices
2011/1/21
Two independent groups have demonstrated how a pair of entangled photons can transfer their entanglement to and from a solid – the process that should one day form the backbone of so-called quantum me...
英国皇家布鲁顿医院（Royal Brompton Hospital）宣布，他们将采用最近购买的Life Technologies的SOLiD测序仪对一万名心脏病患者的外显子组进行测序。
NASA Buys Additional Space Shuttle Reusable Solid Rocket Motors
NASA Additional Space Shuttle Solid Rocket Motors
2009/12/18
NASA has purchased two reusable solid rocket motors from ATK Launch Systems Inc. of Brigham City, Utah, to provide a "launch on need" rescue capability for the final planned space shuttle mission, tar...
NASA and ATK Media Telecon after Ares I Solid Rocket Motor Test
NASA ATK Media Telecon Ares I Solid Rocket Motor Test
2009/8/26
Representatives from NASA and Alliant Techsystems (ATK) will hold a media teleconference Thursday, Aug. 27 at 3:30 p.m. EDT. They will discuss the test of a new first-stage development solid rocket mo...