Dynamic Color-Switching of Hydrogel Micropillar Array under Ethanol Vapor for Optical Encryption.

Responsive structural colors from artificially engineered micro/nanostructures are critical to the development of anti-counterfeiting, optical encryption, and intelligent display. Herein, the responsive structural color of hydrogel micropillar array is demonstrated under the external stimulus of ethanol vapor. Micropillar arrays with full color are fabricated via femtosecond laser direct writing by controlling the height and diameter of the micropillars according to the FDTD simulation.

Dual-Stimuli Cooperative Responsive Hydrogel Microactuators Via Two-Photon Lithography.

With the development of bionics as well as materials science, intelligent soft actuators have shown promising applications in many fields such as soft robotics, sensing, and remote manipulation. Microfabrication technologies have enabled the reduction of the size of responsive soft actuators to the micron level. However, it is still challenging to construct microscale actuators capable of responding to different external stimuli in complex and diverse conditions.

Clay-Originated Two-Dimensional Holey Silica Separator for Dendrite-Free Lithium Metal Anode.

Lithium metal anode is the ultimate choice to obtain next-generation high-energy-density lithium batteries, while the dendritic lithium growth owing to the unstable lithium anode/electrolyte interface largely limits its practical application. Separator is an important component in batteries and separator engineering is believed to be a tractable and effective way to address the above issue. Separators can play the role of ion redistributors to guide the transport of lithium ions and regulate the uniform electrodeposition of Li.

Expression of circulating microRNA-20a and let-7a in esophageal squamous cell carcinoma.

Aim: To investigate the expressions of microRNA-20a (miR-20a) and let-7a in esophageal squamous cell carcinoma (ESCC) and their diagnostic value.

Methods: Seventy patients with ESCC and 40 healthy subjects were enrolled to investigate the expression of miR-20a and let-7a using quantitative real-time PCR. The expression of miR-20a and let-7a was compared between ESCC patients and healthy subjects.

[HPLC determination of insulin and its related substances in insulin powder for inhalation].

Aim: To determine insulin and its related substances in insulin powder for inhalation by reversed phase high performance liquid chromatography method.

Methods: The initial mobile phase was solution A (0.1% trifluoroacetic acid-acetonitril 70:30) and changed to solution B (0.

Hypoglycemic efficacy of pulmonary delivered insulin dry powder aerosol in rats.

Aim: To observe the hypoglycemic efficacy of pulmonary delivery of insulin in dry powder aerosol form.

Methods: Insulin dry powder, made of insulin and other proper materials, was insufflated in rat lung from an incision in the throat. Meanwhile, insulin injection was administered to other rats.