Abstract: “Herein disclosed is an ex vivo method of identifying a state of a tumor margin in a sample. The method comprises operating a system to generate an ultrasound image and a photoacoustic image, wherein the system comprises: a probe configured to deliver a pulsed laser from a laser source to a sample, wherein the laser source is operable to generate the pulsed laser; arrays coupled to the probe, wherein one of the arrays comprises transducing elements arranged thereon which are operable to transmit and collect ultrasound signals, and wherein one of the arrays comprises transducing elements arranged thereon which are operable to collect photoacoustic signals; and a data acquisition module which converts the ultrasound signals and the photoacoustic signals into the ultrasound image and the photoacoustic image, respectively.

Abstract: A method for producing a cholesteric liquid crystal based shell is provided. The method comprises producing a cholesteric liquid crystal shell, solidifying the cholesteric liquid crystal shell so as to obtain a solid shell and perforating the solid shell. Also provided is a cholesteric liquid crystal based solid shell comprising a perforation. A coating composition comprising a plurality of cholesteric liquid crystal based solid shells, an item comprising a tag that comprises the cholesteric liquid crystal based solid shells and a method for authenticating the item are also provided.

Abstract: A refrigerator includes an ice crushing device and a driving device. The ice crushing device includes a stirrer and a transmission assembly. The stirrer includes a rotary shaft. The transmission assembly includes a first cylindrical gear, a first intermediate shaft, a second cylindrical gear, a second intermediate shaft, a third cylindrical gear, a first bevel gear and a second bevel gear. Any one of the first cylindrical gear, the second cylindrical gear, the third cylindrical gear, and the first bevel gear is defined as a driving gear. The driving gear is connected to the driving device and is configured as an incomplete gear. The driving gear is configured to rotate due to driving of the driving device, so as to drive the rotary shaft of the stirrer to rotate intermittently.

Abstract: An aspect of the present invention relates to a method for producing a cholesteric liquid crystal based shell. The method comprises producing a cholesteric liquid crystal shell, solidifying the cholesteric liquid crystal shell so as to obtain a solid shell and perforating the solid shell. A second aspect of the present invention relates to a cholesteric liquid crystal based solid shell comprising a perforation. Other aspects of the present invention pertain to a coating composition comprising a plurality of cholesteric liquid crystal based solid shells, an item comprising a tag that comprises the cholesteric liquid crystal based solid shells and a method for authenticating the item.