Tapping.mp4

The camera, installed on an unsecured gimbal without a fixed lock, experiences minor pose shifts with a gentle tap

Media 1: Dynamic 3D imaging based on acousto-optic heterodyne fringe interferometry

Originally published in Optics Letters on 15 June 2014 (ol-39-12-3678

Visualization 1: Suppression of projector distortion in phase-measuring profilometry by projecting adaptive fringe patterns

3D reconstruction result with the proposed method Originally published in Optics Express on 19 September 2016 (oe-24-19-21846

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The phase compensation process of the 4×MO and the 10×M

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The phase compensation process of the 4×MO and the 10×M

Elucidating the Intercalation Pseudocapacitance Mechanism of MoS₂–Carbon Monolayer Interoverlapped Superstructure: Toward High-Performance Sodium-Ion-Based Hybrid Supercapacitor

Two-dimensional (2D) layered materials have shown great promise for electrochemical energy storage applications. However, they are usually limited by the sluggish kinetics and poor cycling stability. Interface modification on 2D layered materials provides an effective way for increasing the active sites, improving the electronic conductivity, and enhancing the structure stability so that it can potentially solve the major issues on fabricating energy storage devices with high performance. Herein, we synthesize a novel MoS₂–carbon (MoS₂–C) monolayer interoverlapped superstructure via a facile interface-modification route. This interlayer overlapped structure is demonstrated to have a wide sodium-ion intercalation/deintercalation voltage range of 0.4–3.0 V and the typical pseudocapacitive characteristics in fast kinetics, high reversibility, and robust structural stability, thus displaying a large reversible capacity, a high rate capability, and an improved cyclability. A full cell of sodium-ion hybrid supercapacitor based on this MoS₂–C hybrid architecture can operate up to 3.8 V and deliver a high energy density of 111.4 Wh kg^–1 and a high power density exceeding 12 000 W kg^–1. Furthermore, a long cycle life of 10 000 cycles with over 77.3% of capacitance retention can be achieved

Visualization 1: Structured light field 3D imaging

A brief presentation of the procedure and result of the proposed method. Originally published in Optics Express on 05 September 2016 (oe-24-18-20324

Dual-Functional Carbon Dots Pattern on Paper Chips for Fe³⁺ and Ferritin Analysis in Whole Blood

Though microfluidic paper analytical devices (μPADs) have attracted paramounting attentions in recent years as promising devices for low cost point-of-care tests, their real applications for blood analysis are still challenged by integrating sample preparation with different detection modes on a same μPAD. Herein, we developed a novel μPAD, which well coupled automatic serum extraction with reliable dual mode iron health tests: fluorescent analysis for Fe³⁺ and colorimetric ELISA for ferritin. All these functions are made available by in situ carbon dots (CDs) and AuNPs sequential patterning techniques. For CDs immobilization, hydrothermal reaction was taken on paper, to which a patterned through-hole polydimethylsiloxane (PDMS) mask was applied. None fluorescence CDs (nF-CDs) were generated on exposed regions, while the fluorescent CDs (F-CDs) were generated simultaneously on covered regions. Sensitive serum iron quantification was realized on the F-CDs modified regions, where Fe³⁺ ion can selectively quench the fluorescence of F-CDs. For AuNPs immobilization, electroless plating was taken on nF-CDs modified regions. The resulting AuNPs on nF-CDs layer on one hand triggered the coagulation of blood cells and thus led to the longest ever wicking distance for serum separation, on the other hand facilitated colorimetric enzyme linked immunosorbent assay (ELISA) for detection of serum ferritin. Combining the two readings, the μPAD can provide reliable measurement for serum iron and serum ferritin in whole blood. Furthermore, as CDs and AuNPs modified μPAD has the features of easy handling, low-cost, lightweight, and disposability, it is accounting for a promising prototype for whole blood point-of-care analysis

Mesoporous TiO₂ Nanocrystals/Graphene as an Efficient Sulfur Host Material for High-Performance Lithium–Sulfur Batteries

Rechargeable lithium–sulfur (Li–S) batteries are promising in high-energy storage due to the large specific energy density of about 2600 W h kg^–1. However, the low conductivity of sulfur and discharge products as well as polysulfide-shuttle effect between the cathode and anode hamper applications of Li–S batteries. Herein, we describe a novel and efficient S host material consisting of mesoporous TiO₂ nanocrystals (NCs) fabricated in situ on reduced graphene oxide (rGO) for Li–S batteries. The TiO₂@rGO hybrid can be loaded with 72 wt % sulfur. The strong chemisorption ability of the TiO₂ NCs toward polysulfide combined with high electrical conductivity of rGO effectively localize the soluble polysulfide species within the cathode and facilitate electron and Li ions transport to/from the cathode materials. The sulfur-incorporated TiO₂@rGO hybrid (S/TiO₂@rGO) shows large capacities of 1116 and 917 mA h g^–1 at the current densities of 0.2 and 1 C (1 C = 1675 mA g^–1) after 100 cycles, respectively. When the current density is increased 20 times from 0.2 to 4 C, 60% capacity is retained, thereby demonstrating good cycling stability and rate capability. The synergistic effects of TiO₂ NCs toward effective chemisorption of polysulfides and conductive rGO with high electron mobility make a promising application of S/TiO₂@rGO hybrid in high-performance Li–S batteries

Large-Scale Synthesis and Mechanism of β‑SiC Nanoparticles from Rice Husks by Low-Temperature Magnesiothermic Reduction

Silicon carbide (SiC) nanomaterials have many applications in semiconductor, refractories, functional ceramics, and composite reinforcement due to their unique chemical and physical properties. However, large-scale and cost-effective synthesis of SiC nanomaterials at a low temperature is still challenging. Herein, a low-temperature and scalable process to produce β-phase SiC nanoparticles from rice husks (RHs) by magnesiothermic reduction (MR) at a relative low temperature of 600 °C is described. The SiC nanoparticles could inherit the morphology of biogenetic nano-SiO₂ in RHs with a size of about 20–30 nm. The MR reaction mechanism and role of intermediate species are investigated. The result shows that SiO₂ is first reduced to Mg₂Si in the rapid exothermic process and the intermediate product, Mg₂Si, further reacts with residual SiO₂ and C to produce SiC. Moreover, the SiC shows considerable electromagnetic wave absorption with a minimum reflection loss of −5.88 dB and reflection loss bandwidth < −5 dB of 1.78 GHz. This paper provides a large-scale, cost-effective, environmental friendly, and sustainable process to produce high-quality β-phase SiC nanoparticles from biomass at a low temperature, which is applicable to functional ceramics and optoelectronics