Strontium is an alkaline earth metal (atomic number 38) that occurs naturally in several isotopic forms, most notably stable isotopes 84Sr, 86Sr, 87Sr, and 88Sr and the radiogenic isotope 87Sr produced by 87Rb decay. In research, strontium is important in geochemistry, paleoenvironmental reconstruction, and isotope geochronology, where Sr isotopic ratios (especially 87Sr/86Sr) are used to trace fluid–rock interaction, provenance of sediments, and migration patterns in ecology and archaeology. Its chemical behavior is dominated by the +2 oxidation state, with strong affinity for carbonate and sulfate phases, influencing its partitioning in marine and continental systems.
Researchers from the University of Science and Technology of China have achieved a major breakthrough in optical clock technology, developing a strontium optical lattice clock with stability and uncertainty both surpassing ...
Quantum Physics
Mar 9, 2026
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Having good neighbors can be very valuable—even in the atomic world. A team of Amsterdam physicists was able to determine an important property of strontium atoms, a highly useful element for modern applications in atomic ...
General Physics
Nov 4, 2025
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Optical lattice clocks are emerging timekeeping devices based on tens of thousands of ultracold atoms trapped in an optical lattice (i.e., a grid of laser light). By oscillating between two distinct quantum states at a particular ...
A research team led by Prof. Chang Hong from the National Time Service Center (NTSC) of the Chinese Academy of Sciences (CAS) has developed a strontium optical lattice clock with both frequency stability and systematic uncertainty ...
Optics & Photonics
Jun 12, 2025
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Metal peroxide (MO2, M=Ca, Sr, Ba) is an alternative to hydrogen peroxide (H2O2). It has excellent oxidative properties, superior chemical stability, high purity, and is easy to store and transport. It has been widely used ...
Nanomaterials
Oct 28, 2024
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Researchers at the Ye Lab at JILA (the National Institute of Standards and Technology and the University of Colorado Boulder) and University of Delaware recently created a highly precise optical lattice clock based on trapped ...
Researchers have developed a new water-soluble sacrificial layer, "super-tectragonal" Sr4Al2O7 (SAOT), with broad tunability in lattice constants, which can be used to prepare high-quality freestanding oxide membrane. Their ...
Nanomaterials
Mar 18, 2024
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