Abstract: A bioelectronic system for rare cell separation and an application thereof. The bioelectronic system comprises: an electrode; a conductive polymer layer located on a surface of the electrode; a conductive polymer fiber layer located on the surface of the conductive polymer layer not in contact with the electrode; and a rare cell capturing material located the surface of the conductive polymer fiber layer not in contact with the conductive polymer layer. The conductive polymer layer has a thickness of 10-2000 nanometers. A method for rare cell separation can be provided using the bioelectronic system, and includes: introducing a biological fluid containing a rare cell into the bioelectronic system to capture the rare cell; and providing an electrical stimulus by using the electrode of the bioelectronic system to release the captured rare cell.

Abstract: A voltage generator and a flash memory thereof are provided. The voltage generator is used to provide a work reference voltage having a plurality of reference levels to a word line decoder circuit and includes a plurality of voltage trimming circuits. The voltage trimming circuits are connected in series between the work reference voltage and a ground voltage and respectively receive a trimming code, wherein the voltage levels of the work reference voltages are controlled by the trimming codes received by the voltage trimming circuits to select one of the reference levels.

Abstract: A voltage generator and a flash memory thereof are provided. The voltage generator is used to provide a work reference voltage having a plurality of reference levels to a word line decoder circuit and includes a plurality of voltage trimming circuits. The voltage trimming circuits are connected in series between the work reference voltage and a ground voltage and respectively receive a trimming code, wherein the voltage levels of the work reference voltages are controlled by the trimming codes received by the voltage trimming circuits to select one of the reference levels.

Abstract: A golf ball includes a ball body having a central portion formed with a through hole. Thus, the golf ball produces whistle like audible sound by provision of the through hole of the ball body during rotation of the ball body after the golf ball is hit, thereby enhancing the playing amusement of the golf ball. In addition, the golfer can find the location of the golf ball by the audible sound produced by the ball body so as to shorten the time required for searching for the golf ball, thereby facilitating the golfer playing the golf ball.