The invention relates to a
system for amplifying nucleic acids, in particular by means of a
polymerase chain reaction, comprising a fluid receptacle (1), in particular a
microtiter plate or a microchip, and a reaction mixture (2), which contains at least one
nucleic acid (2.1) to be amplified, a
polymerase enzyme, a buffer medium (2.2), a plurality of excitable nanoparticles (3), preferably nanostars or nanorods, and quantification means, in particular a fluorescent and / or intercalating
nucleic acid dye, the reaction mixture (2) being receivable in the fluid receptacle (1). The
system further comprises a
reaction chamber (4), which has excitation means, the fluid receptacle (1) preferably being introducible into the
reaction chamber (4) and the excitation means (5) being designed to excite the nanoparticles (3); the nanoparticles (3) are designed to generate heat in the
excited state; and the
reaction chamber (4) has a detection device (6), which is designed to excite the quantification means and quantitatively and / or qualitatively detect same, said excitation means being near-
infrared radiation emitters (5).