Researchers developed diimmonium DB·2X nano-agents that support photoacoustic imaging at 1700 nm, with DB·2TFSI showing strong performance in preclinical imaging experiments. In mouse models, 1700 nm imaging reduced endogenous background interference and improved signal-to-background ratios compared with 1064 nm, supporting further investigation of NIR-IIb photoacoustic contrast agents.
Designed for demanding semiconductor applications, PI’s A-323 planar scanner combines dynamic motion, vibration management, and configurable multi-axis integration for precision inspection and metrology.
Researchers used spatiotemporal terahertz emission nanoscopy to map the electromagnetic signatures of ultrafast spin-driven charge currents in a fiber-coupled spintronic terahertz emitter with femtosecond temporal resolution and nanoscale spatial sensitivity. The study shows how localized in-plane currents produce detectable out-of-plane electric fields, clarifying how near-field terahertz measurements can probe ultrafast spin-to-charge transport.
Researchers developed an end-to-end inverse design method that uses LSTM prediction, a conditional generative adversarial network, and metasurface reconstruction to tailor the photon density of states in 3D photonic crystals made through holographic lithography. The method produced connected structures with strong local pDOS enhancement across multiple target frequencies and identified two recurring high-pDOS morphological families, while the reported optical gains remained computational rather than experimentally measured.
Most of today's computer chips — also sometimes known as conventional integrated circuits — use electrons to deliver their signals via semiconductor materials and metallic components. In contrast, photonic integrated circuits use faster signal carriers, such as photons or quantized "light particles."
Compounds containing gadolinium, a metal with magnetic properties that help highlight tumors, blood vessels or damaged tissue, are commonly used as contrast agents in MRI. Although these compounds have been essential for medical diagnosis for almost four decades, their use may pose a health risk for patients with kidney failure.
This article reviews the mutual empowerment between artificial intelligence and metasurfaces, characterizing that artificial intelligence enables intelligent nanophotonics, while metasurfaces facilitate optical intelligence.
A new silicon metasurface capable of rapidly controlling wide-bandwidth light pulses could help advance compact technologies for optical communications, computing, LiDAR and photonic information processing.
A pixel-controlled programmable metasurface capable of dynamically reshaping terahertz (THz) waves could open new possibilities for compact imaging, communications and optical systems.
A Nature Communications review maps how crystal symmetry, material synthesis, and structural control shape polaritons in two-dimensional metal oxides, a diverse family of materials with optical responses spanning the visible to terahertz range. The authors assess fabrication challenges and propose photonic-chip concepts involving reconfigurable waveguides, polariton logic, biosensing, photodetection, and thermal management.
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