Abstract: A sensor for determining the presence of at least one target molecule in a sample is disclosed. The sensor includes a layer formed of high aspect ratio molecular structures (HARM-structures); and a blocking layer on the layer formed of HARM-structures, wherein the blocking layer is formed of a plurality of casein micelles, wherein: the casein micelles include primary amines, wherein at least part of the primary amines are functionalized with an amine-reactive crosslinker, and cavities are formed between the plurality of casein micelles. Further, a method for determining the presence of at least one target molecule in a sample is disclosed. Further, a process of preparing a sensor for determining the presence of at least one target molecule in a sample is disclosed. Further, a kit for determining the presence of at least one target molecule in a sample is disclosed.

Abstract: The present invention relates to a microelectrode array device and method for biological imaging comprising a well for containing a liquid medium; an optically transparent substrate; and a microelectrode array comprising multiple electrode pads. Each electrode pad comprises a conductive film having a thickness between 5 nm and 1000 nm comprising a carbon nanotube network and/or graphene. The microelectrode array further comprises at least one counter electrode and electrically conductive traces connecting the electrode pads with a voltage source and connecting the at least one counter electrode with the voltage source such that a potential difference can be provided between the electrode pads and the counter electrode.