Abstract: An optical gene biosensor is disclosed. The optical gene biosensor includes a substrate; a molecular beacon anchored to the substrate, wherein the molecular beacon includes an oligonucleotide specifically binding to a target nucleic acid molecule and a first compound bound to a first terminal of the oligonucleotide; an optical marker specifically binding to the first compound, wherein the optical marker is configured to retro-reflect irradiated light; a light source for irradiating the optical marker with light; and a light-receiver for receiving light retro-reflected from the optical marker. The optical gene biosensor may perform accurate quantitative analysis of a target nucleic acid molecule using both non-spectral and spectral light sources.

Abstract: In accordance with an embodiment, a battery assembly device includes a holder unit configured to hold a structure and to transfer the structure to a target to be mounted, an alignment jig operatively associated with the holder unit, and configured to align the target, and a transfer unit configured to provide a moving force to the alignment jig.

Abstract: A battery module includes: a battery cell stack including a plurality of battery cells stacked on each other in a first direction; a pair of cell covers which is in surface contact with both side surfaces of the battery cell stack; a housing which covers side surfaces of the pair of cell covers in the first direction and top surfaces of the battery cell stack. In particular, a bottom side of the housing is open.