Abstract: An on-line detection system for defects of an MEA is provided. The detection system includes a workbench, two connecting rods are arranged inside the workbench, two ends of the two connecting rods are both connected to two side walls of the workbench by means of bearings, and conveying rollers are fixedly arranged outside the two connecting rods in a sleeving manner. One side of the workbench is fixedly provided with a first electric motor, and an output end of the first electric motor is fixedly connected to one of the connecting rods. Belt pulleys are fixedly arranged outside the two connecting rods in a sleeving manner, and a belt is arranged outside the two belt pulleys in a sleeving manner. A hollow roller is arranged on an inner side of the workbench, and a plurality of exhaust holes are provided in a top of the hollow roller.

Abstract: A method of fabricating a binary metasurface for producing an ultrasound Airy beam for underwater ultrasound applications is provided. The method includes generating an amplitude distribution of an Airy beam at a frequency, and converting the amplitude distribution into a binary phase profile. The method also includes generating a 3D printing design of a binary metasurface based on the binary phase profile, wherein the binary metasurface includes ridges and grooves defined by neighboring ridges, a ridge having a thickness corresponding to a phase delay of ?/2 of the Airy beam between water and a 3D-printable material. The method further includes additively manufacturing the binary metasurface with the 3D-printable material based on the 3D printing design.

Abstract: Devices, systems, and methods for performing focused ultrasound-mediated blood-brain barrier opening (FUS-BBBO) are disclosed. Focused ultrasound (FUS) devices are disclosed that include an adapter configured to attach to an actuated mounting shaft of a stereotaxic system, a transducer housing configured to mount to the adapter, and a FUS transducer housed within the transducer housing. A FUS system is disclosed that includes the disclosed FUS device operatively coupled to a transducer driving system. A stereotaxic-guided FUS-BBB system is disclosed that includes the disclosed FUS system mounted to an actuated mounting shaft of a stereotaxic system.