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A new algorithm helps drones find the fastest route around obstacles without crashing. The system could enable fast, nimble drones for time-critical operations such as search and rescue.
The movement of small water droplets is controlled by means of a magnet
magnet water movement magnetic field
2021/8/11
A new study has presented and characterized the formation and properties of a superparamagnetic ring, which fits snugly around a drop of water due to liquid-liquid interaction, and allows the drops to...
Exotic four-quark particle spotted at Large Hadron Collider
LHC four-quark composite particle
2021/8/11
Rare tetraquark is one of dozens of non-elementary particles discovered by the accelerator, and could help to test theories about strong nuclear force.
我国科学家为超高能伽马光源的测定提供了新标准
超高能伽马光源测定 蟹状星云辐射 烛光亮度
2021/8/9
中国科学院高能物理研究所牵头的LHAASO国际合作团队利用“高海拔宇宙线观测站（LHAASO）”精确测量了高能天文学标准烛光的亮度，为超高能伽马光源的测定提供了新标准。
Using particle accelerators to investigate the quark-gluon plasma of the infant universe
QGP atom neutron
2021/8/10
A new special edition of EPJ Special Topics brings together several papers that detail our understanding of Quark-Gluon Plasma (QGP) and the processes that transformed it into the baryonic matter we a...
该研究工作提出新的数值积分方法，有效地应用于后牛顿非线性系统。在黑洞或者中子星等致密星的强引力系统下，后牛顿近似方法可以有效地描述相对论性的二体或者限制三体问题的动力学和引力波。高阶的后牛顿拉格朗日形式运动方程是高度非线性的，同时也伴随着丰富的混沌现象，传统的数值积分器在长期积分中由于舍入误差的累积，导致丧失系统的运动积分稳定性而积分结果不可靠。在前期的研究基础上，作者们提出扩大相空间拉格朗日类辛...
Decades of research brings quantum dots to brink of widespread use
LED colloidal quantum dots semiconductor LSC
2021/8/9
A new article gives an overview of almost three decades of research into colloidal quantum dots, assesses the technological progress for these nanometer-sized specs of semiconductor matter, and weighs...
中国科学院西安光学精密机械研究所计算光学显微成像研究获进展（图）
显微成像术 CFPM 彩色化
2021/8/6
中科院西安光学精密机械研究所潘安副研究员、姚保利研究员、马彩文研究员团队在《中国科学：物理学力学天文学》（英文版）上在线刊发封面文章，报道基于彩色传递的高通量快速全彩色数字病理切片显微成像术。
山东大学空间科学与物理学院2018级本科生郑书玥在学院李凯老师指导下，于天文学权威期刊Monthly Notices of the Royal Astronomical Society上发表题为“The first photometric and spectroscopic analysis of the extremely low mass-ratio contact binary NSVS 5...
Experiments show that a collection of bouncing fluid droplets can behave like a microscopic system of spins — the intrinsic angular momenta of particles. This discovery could lead to a better understa...
Powering navigational buoys with help of ocean waves
ocean buoy TENG wave energy energy conversion
2021/8/6
Traditionally used energy harvesting technologies, like photovoltaic panels or wind turbines, suffer from several limitations. In the absence of daylight and wind, neither of the two can supply any po...
中国科学院工程热物理研究所研究人员在间断缝与普通气膜孔组合结构的研究基础上，提出采用间断缝与槽孔的新型组合端区气膜冷却结构。
中国科学院上海光源中心实验揭示自由电子激光的物理过程（图）
自由电子激光 二极磁铁 电磁波 电子束
2021/8/5
自由电子激光具备超快时间分辨、超高空间分辨和超强峰值亮度等特点，是目前最先进的研究工具之一，促进了生命科学、化学、物理学和材料科学等领域的发展。国际上，已先后有8台X射线自由电子激光装置建成，并投入用户科学实验。作为新一代光源，与同步辐射光源不同的是，自由电子激光放大来自于电磁波和相对论电子束在波荡器磁场中持续的相互作用，其中波荡器是一种由成千上万的二极磁场组合成周期性正弦磁场的发光元件。
Artificial stomach reveals fluid dynamics of food digestion
stomach food digest hydrodynamics
2021/8/10
Scientists have extensively studied how gastric juices in the stomach break down ingested food and other substances. However, less is known about how complex flow patterns and mechanical stresses in t...
两种量子密钥分发融合可用性首次获现网验证
量子密钥分发 后量子密码 现网验证
2021/8/10
中国科学技术大学、国盾量子、国科量子、济南量子技术研究院与上海交通大学等单位的联合团队，完成了国际首次量子密钥分发（QKD）和后量子密码（PQC）融合可用性的现网验证。