Abstract: The present invention relates to a microfluidic chip, which includes cell inlets into which a fluid containing cells is injected, and a cell channel connected thereto; and extra cellular matrix (ECM) inlets into which a fluid containing an ECM component is injected, and an ECM channel connected thereto, wherein the cell channel is located adjacent to a part of one side of the ECM channel, and a micro barrier with a lower height than these channels is located between them and formed by arranging a plurality of concave patterns, curved in the direction of the ECM channel, at regular intervals. The present invention also relates to a method of forming a spheroid or organoid in vitro model using the same.

Abstract: The present invention relates to a shutter device for camera used for small-sized digital equipment and includes a base forming a light transmission hole to expose a film or charge-coupled device (CCD) to laser beam; an electromagnet mounted on one side of the base; a driving arm which is mounted on one side of the electromagnet on the base so as to pivot on the base; a first shutter and a second shutter to open and close the light transmission hole, which pivots on the part of the base in association with the pivoting of the driving arm; and a magnetic which is installed on the driving arm and has the north magnetic pole and the south magnetic pole at opposite ends of the magnetic or on surfaces opposite to the electromagnet.

Abstract: The present invention relates to a shutter device for camera used for small-sized digital equipment and includes a base forming a light transmission hole to expose a film or charge-coupled device (CCD) to laser beam; an electromagnet mounted on one side of the base; a driving arm which is mounted on one side of the electromagnet on the base so as to pivot on the base; a first shutter and a second shutter to open and close the light transmission hole, which pivots on the part of the base in association with the pivoting of the driving arm; and a magnetic which is installed on the driving arm and has the north magnetic pole and the south magnetic pole at opposite ends of the magnetic or on surfaces opposite to the electromagnet.