11 research outputs found

    Visualization 1: Graphics processing unit–assisted real-time three-dimensional measurement using speckle-embedded fringe

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    Measurement result of a shaking paper Originally published in Applied Optics on 01 August 2015 (ao-54-22-6865

    Development of Highly Enantio- and <i>Z</i>‑Selective Grubbs Catalysts via Controllable C–H Bond Activation

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    Asymmetric olefin metathesis is a powerful strategy for stereocontrolled synthesis that allows the formation of chiral elements in conjunction with carbon–carbon double bonds. Here, we report a new series of cyclometalated stereogenic-at-Ru catalysts that enable highly efficient asymmetric ring opening/cross-metathesis (AROCM) and asymmetric ring-closing metathesis (ARCM) reactions. Single enantiomers of these catalysts with either right-handed or left-handed configurations at the Ru center can be easily accessed via highly stereoselective C–H bond activation-based cyclometalation. Right-handed chiral Ru catalysts enabled the Z- and enantioselective AROCM of a wide range of norbornenes and terminal alkenes, generating densely functionalized cyclopentanes with excellent stereo- and enantioselectivities (99:1 Z/E, up to 99% ee). Left-handed chiral Ru catalysts enabled the facile ARCM of sterically unhindered, all-terminal prochiral trienes, which had not been achieved by previous Ru catalysts, providing simple cyclic ethers and amides with tertiary or quaternary carbon stereocenters with excellent enantioselectivities (up to 99% ee)

    Visualization 2: High-precision real-time 3D shape measurement using a bi-frequency scheme and multi-view system

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    The 3D reconstruction results of a wrinkled paper Originally published in Applied Optics on 01 May 2017 (ao-56-13-3646

    Visualization 2: Real-time 3-D shape measurement with composite phase-shifting fringes and multi-view system

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    Measurement result of a moving palm Originally published in Optics Express on 05 September 2016 (oe-24-18-20253

    Visualization 1.avi

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    The 3D reconstruction of the earphone at different heights with the vibration frequency of 1Hz

    2887665.mp4

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    Visualization 1 is the reconstructed 3D results of an vibrating diaphragm. It's referenced in Fig. 12
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