Abstract: A biosensor (10) comprises a top layer (12) and a plurality of pillar structures (14) formed integral with the top layer, the plurality of pillar structures extending from a surface of the top layer. The biosensor further includes a specific bio-layer (16) disposed about a perimeter of the pillar structures of the plurality of pillar structures.

Abstract: A method and a device for writing data marks to an optical disc or a master disc are disclosed, the data marks to be arranged along at least one metatrack, which is formed by a number of coplanar parallel sub-tracks. The method comprises a step of superposing a rotational motion and a radial motion of the disc and of a writing beam spot on the disc relative to each other. The radial motion comprises a motion component in a first radial direction and periodically repeated jumps in a second radial direction opposite to the first radial direction. The radial motion is a superposition of a) a first radial motion component (18), by which the radial position of the writing beam spot as a function of the angular position with respect to the rotational motion is changed steadily with a first slope, and b) a periodic second radial motion component (20), one period of which, plotted as a function of said angular position, is divided into aa) a first interval (20.