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We demonstrate an all-round dynamic control of intra- and inter-layer excitonic processes and interconversion between IX and IX− in a WSe2/Mo0.5 W0.5 Se2 heterobilayer with <20 nm spatial resolution, achieved by multifunctional tip-enhanced photoluminescence (TEPL) spectroscopy and imaging.
Conventional widefield excitation and temporal phase-shift fluorescence interference in a basic 4π-interferometer enable video rate, multiple particle tracking with isotropic, 3D precision over large volumes in cells and deep in soft materials.
Non-ideal achromatic flat lenses for a large-scale diameter up to 10 mm were experimentally realized and reported recently, which demonstrated a broad working bandwidth from 400 to 1100 nm.
The hyper-hemi-microsphere fabricated by FIB milling can resolve ~50 nm feature by only coupling with a 10× objective lens (NA = 0.3) in virtual imaging mode.
A rapid and programmable amplitude modulator based on the thermo-optical effect has been demonstrated by integrating transparent microheaters with metasurfaces.
Laser-sheet compressed ultrafast photography (LS-CUP) is the world’s fastest (> 1010 fps) real-time planar imaging camera for nanosecond laser-particle dynamics and temperature studies in flames.
A two-layers model is proposed to reveal that femtosecond laser direct writing chirality inside silica glass has two contributions: a form birefringence and a stress related birefringence.
Ultrafast multidimensional imaging is made possible by the electro-optic sampling of arrival timings of multiple space-to-wavelength encoded light pulses.
We developed a human visual-cell-inspired perovskite-based color camera that demonstrated high-resolution (up to 256×256 pixels) color images in diffuse mode.
Three-dimensional photoacoustic tomography synchronized with an electrocardiogram provides highly resolved images of a beating heart with optical absorption contrast and enables investigation of cardiovascular diseases in animal models.
Two-terminal artificial optoelectronic devices in which photoexcited carriers and ions are coupled constitute a built-in artificial neural network that can sense, memory and process simultaneously.