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Light has angular momentum properties. Circularly polarized or elliptically polarized beams carry spin angular momentum (SAM), while beams with helical phase wavefronts carry orbital angular momentum (OAM). During the interaction between light and particles, the transfer of angular momentum can generate optical torque, driving particles to rotate. Among them, the transfer of optical spin angular m...
A Boston University research project has successfully developed an innovative single-cell sorting technique that uses stimulated Raman spectroscopy to replace traditional fluorescent labeling and achieve labeling free and non-destructive single-cell measurements. This technology is expected to have a profound impact in the fields of cytology, microbiology and biomedical research, allowing scienti...
AbstractDue to the width of the laser melt pool and the sintering effect on the surrounding powder, the experimental size of the selective laser melting (SLM) sample will be larger than the design size, which will greatly affect the dimensional accuracy and surface quality of the thin-walled sample. In order to obtain SLM thin-walled TC11 specimens with precise dimensions, an orthogonal experiment...
Recently, TechStar Acquisition Corporation (07855. HK), a special purpose acquisition company, announced that Seyond, the successor company of the special purpose acquisition transaction, has submitted a new listing application. Seyond plans to land on the Hong Kong Stock Exchange under the De SPAC model. This means that Seyond is only one step away from going public through a backdoor listing. If...
Recently, the Xi'an Institute of Optics and Fine Mechanics of the Chinese Academy of Sciences has made significant progress in attosecond imaging research, achieving high-resolution imaging of ultra wide spectrum light sources. The related results were published in the journal Photonics Research under the title "Snapshot coherent diffraction imaging across ultra wideband spectra".Figure 1. Demonst...