Bringing chiral functionality to in vivo applications of nanomaterials Maria Mukhina News & Views Open Access 27 May 2022 Metasurface-enabled on-chip multiplexed diffractive neural networks in the visible A polarization-multiplexed metasurface-enabled diffractive neural network, which is integrated with a CMOS imaging sensor, demonstrates on-chip multi-channel sensing and multitasking in the visible. Xuhao LuoYueqiang HuHuigao Duan Article Open Access 27 May 2022 Polarization multiplexed diffractive computing: all-optical implementation of a group of linear transformations through a polarization-encoded diffractive network All-optical computation of a group of linear transforms is achieved using a polarization-encoded diffractive optical processor. Jingxi LiYi-Chun HungAydogan Ozcan Article Open Access 26 May 2022 Tunable structural colors on display Andreas Tittl News & Views Open Access 25 May 2022 Scalable high-repetition-rate sub-half-cycle terahertz pulses from spatially indirect interband transitions We generate extremely asymmetric sub-half-cycle terahertz waveforms with scalable field strengths at megahertz pulse-repetition rates via ultrafast excitation of spatially indirect interband transitions in tailored quantum well heterostructures. Christian MeinekeMichael PragerDominique Bougeard Article Open Access 23 May 2022 Topologically tuned terahertz confinement in a nonlinear photonic chip Jiayi WangShiqi XiaZhigang Chen Article Open Access 23 May 2022 In the shadow of the laser phantom needle cross: dynamic air-plasma aperture sheds light on terahertz microscopy Daniel HeadlandWithawat Withayachumnankul News & Views Open Access 20 May 2022 Theranostic of orthotopic gliomas by core-shell structured nanoplatforms Luís D. Carlos News & Views Open Access 20 May 2022 Developing momentum in vanishing index photonics Nathaniel Kinsey News & Views Open Access 20 May 2022 Highly efficient acousto-optic modulation using nonsuspended thin-film lithium niobate-chalcogenide hybrid waveguides Lei WanZhiqiang YangZhaohui Li Article Open Access 20 May 2022 Ultraviolet phosphorescent carbon nanodots Ultraviolet high-energy photons of phosphorescent carbon dots for antibacterial applications. Herein, the UV phosphorescent CNDs were achieved by decreasing conjugation size and spatial confinement. As a demonstration, the CNDs are used to inactivate gram-negative/positive bacteria. Shi-Yu SongKai-Kai LiuChong-Xin Shan Article Open Access 20 May 2022 Lanthanide-doped heterostructured nanocomposites toward advanced optical anti-counterfeiting and information storage Lanthanide-doped heterostructured nanocomposites were developed by using cation exchange method and successfully applied toward advanced optical anti-counterfeiting and information storage Yao XieYapai SongLining Sun Article Open Access 20 May 2022 Towards Raman imaging of centimeter scale tissue areas for real-time opto-molecular visualization of tissue boundaries for clinical applications Raman spectroscopy combined with augmented reality and mixed reality to reconstruct molecular information of tissue surface. Oleksii IlchenkoYurii PilhunAndrii Kutsyk News & Views Open Access 19 May 2022 Divergence-degenerate spatial multiplexing towards future ultrahigh capacity, low error-rate optical communications Zhensong WanYijie ShenXing Fu Article Open Access 19 May 2022 Optical metrology embraces deep learning: keeping an open mind Bing Pan News & Views Open Access 17 May 2022 Silent microscopy to explore a brain that hears butterflies’ wings Shin-Ichiro TeradaMasanori Matsuzaki News & Views Open Access 17 May 2022 Direct demonstration of triplet excimer in purely organic room temperature phosphorescence through rational molecular design An ideal model containing eight phenothiazine 5,5-dioxide derivatives was established to clearly prove the formation of triplet excimer. Competition between monomer (T1) and excimer (T1*) based on π-π stacking is the origin for their changed RTP properties. Zhenjiang LiuYu TianZhen Li Article Open Access 17 May 2022 Real-time whole-brain imaging of hemodynamics and oxygenation at micro-vessel resolution with ultrafast wide-field photoacoustic microscopy The ultrafast wide-field photoacoustic microscopy integrates novel light source, fast scanning mechanism, and machine learning enhancement, which allows high-speed tracking of whole-brain functions in action at capillary level. Xiaoyi ZhuQiang HuangJunjie Yao Article Open Access 17 May 2022 High resolution multispectral spatial light modulators based on tunable Fabry-Perot nanocavities A spatial light modulator is demonstrated based on Fabry-Perot nanocavity resonances, enabling micrometer-sized pixels and efficient full phase control at multiple wavelengths simultaneously, across the visible spectrum (including RGB colors). Shampy ManshaParikshit MoitraArseniy I. Kuznetsov Article Open Access 17 May 2022 Blue LED-pumped intense short-wave infrared luminescence based on Cr3+-Yb3+-co-doped phosphors Cr3+-Yb3+-co-doped phosphors that emit intense short-wave infrared light in the 900–1200 nm upon blue light excitation have been developed. Yan ZhangShihai MiaoXiao-Jun Wang