Pasting viscosity and in vitro digestibility of retrograded waxy and normal corn starch powders

Investigations into the function of sticky rice on the microstructures of hydrated lime putties

Reduced calorie emulsion-based foods: Protein microparticles and dietary fiber as fat replacers.

The rheological properties of Oviductus Ranae (OR) hydrogels were systematically investigated with shear viscosity, dynamic oscillation, and creep-recovery measurements. The viscosity curves displayed phenomena of shear thinning with increase of shear rate. The flow behaviors of the hydrogels were described using 2 representative rheological models. The lesser water was absorbed by OR, the higher viscosity and greater extent of thixotropy it presents. Dynamic viscoelasticity measurements indicated that the samples exhibit viscoelastic properties as physical gels. Creep curves also revealed that the hydrogels behave as viscoelastic solids. Damped oscillations were observed in the initial stage of creep tests (0–1 s). The viscoelastic moduli obtained from dynamic oscillations and those from damped oscillations agreed with each other. The strong dependence of rheological behaviour on network of OR hydrogels had been confirmed by electron microscopy.

Rheological behaviors and microstructure of Oviductus Ranae hydrogels

Niobium disulfide is a kind of transition metal dichalcogenides which has the advantages of large modulation depth, short excited carrier recovery time and high carrier mobility, theoretically being very suitable for the applications in ultrafast photonics. Up to now, there are few reports on the application of NbS2 in ultrafast optical devices, especially in the devices with long working wavelength, such as 2 µm. In this work, few-layer NbS2 nanosheets were prepared by liquid exfoliation method and the NbS2-SA was prepared by covering the nanosheets on tapered fiber. The device NbS2-SA exhibits good nonlinear saturable absorption property with a modulation depth of 10.2 % at 1550 nm. Based on the NbS2-SA, both 1.5 µm and 2 µm ultrafast fiber lasers are realized. The 1.5 µm mode-locked fiber laser has a pulse width of 753 fs and the 2 µm mode-locked fiber laser has an estimated pulse width of 5.77 ps and a maximum output power of 5.56 mW. All the results prove that NbS2 is an excellent broadband saturable absorption material. 

NbS2-nanosheet-based saturable absorber for 1.5 μm and 2 μm ultrafast fiber lasers

Waxy rice starch dispersed in water (50% solids) was gelatinized by heating the dispersion at 121°C for 20 min, and retrograded by storing the paste at 4°C for 2 days. The starch gel was then freeze-dried and ground into powders. The retrograded starch powders were hydrated at 20–30% solid concentration at different temperatures (4 and 23°C), and then thermal and rheological properties were analyzed using the hydrogels. The gel hydrated at 4°C had an onset temperature of melting at 34.9°C, which was approximately 10°C lower than that observed for the gel hydrated at 23°C. The enthalpy value was greater for the gel hydrated at 4°C (14.2 J/g) than the gel hydrated at 23°C (8.8 J/g). The yield stress and consistency of the hydrogels were proportional to the solid concentration. The hydrogel prepared with 30% retrograded starch powders at 4°C displayed a thick creamy texture with retrograded starch crystals that could melt at a temperature range of 35–51°C. The thermal and rheological properties of the hydrogels exhibited the possibility for the retrograded starch powders to be used as fat mimetic in foods.

Thermal and rheological properties of hydrogels prepared with retrograded waxy rice starch powders

Two-dimensional transition-metal dichalcogenide (TMD) materials have attracted increasing attention in efforts to overcome fundamental issues faced by the complementary metal-oxide-semiconductor industry. Multilayer TMD materials such as MoS2 can be used for high-performance transistor-based applications; the drive currents are high and the materials handle low-frequency (LF) noise well. We fabricated double-gated multilayer MoS2 transistors using the h-BN dielectric for the top gate and silicon dioxide for the bottom gate. We systemically investigated the bottom gate voltage (Vb)-controlled electrical characteristics and the top/bottom interface-coupling effects. The effective thickness of the MoS2 channel (tMoS2_eff) was well modulated by Vb, and tMoS2_eff reduction by negative Vb dramatically improved the Ion/Ioff ratio. Numerical simulation and analytical modeling with a variation of the depletion depth under different bias conditions verified the experimental results. We were also the first to observe Vb-tuned LF noise characteristics. Here, we discuss the Vb-affected series resistance and carrier mobility in detail. Our findings greatly enhance the understanding of how double-gated multilayer MoS2 transistors operate and will facilitate performance optimization in the real world.

Electrostatically Controllable Channel Thickness and Tunable Low-Frequency Noise Characteristics of Double-Gated Multilayer MoS2 Field-Effect Transistors with h-BN Dielectric.

Dramatically Enhanced Ambient Effects in a Multi-Layer Mos2 Transistor with Channel Thickness Near Maximum Depletion Width

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Thermal and rheological properties of hydrogels prepared with retrograded waxy rice starch powders

Electrostatically Controllable Channel Thickness and Tunable Low-Frequency Noise Characteristics of Double-Gated Multilayer MoS2 Field-Effect Transistors with h-BN Dielectric.

Dramatically Enhanced Ambient Effects in a Multi-Layer Mos2 Transistor with Channel Thickness Near Maximum Depletion Width