| 摘要 |
A molecular detection device in one embodiment has an ionization unit, a voltage application unit, a separation unit, and a detection unit. The ionization unit obtains a collection of ionized substances by causing ions to adhere to a collection of substances that includes substances having different molecular weights. The voltage application unit applies a first voltage to said collection of ionized substances, causing the collection of ionized substances to fly through a measurement space towards a detection surface. By applying a second voltage to the flying collection of ionized substances so as to make the flight trajectories of said substances bend and eliminating, from the collection of ionized substances, substances that have molecular weights less than or equal to a threshold, the separation unit extracts a detected substance, namely a substance that has a molecular weight greater than said threshold. The detection unit performs a light-detection process to obtain a spectrum for the detected substance, said detected substance having become adhered to the detection surface. |
