Microfluidic device and method with trapping of sample in cavities having lids that can be opened or closed

摘要

System and method for providing a sample preparing arrangement ( 10 ) submergible in a liquid medium that includes a carrier structure ( 11 ) having at least one cavity ( 12 ) therein and that is in communication with an arrangement ( 13 ) for controllable generation of a magnetic field through influence of a control signal. The sample preparing arrangement includes a magnetic covering structure ( 14 ) for covering and/or uncovering the cavity in operative interaction with the magnetic field.