Nanoscopic electrofocusing for bio nanoelectronic devices The ability to arrange precisely designed patterns of nanoparticles into a desired spatial configuration is the key to creating novel nanoscale devices that take advantage of the unique properties of nanomaterials. While two dimensional arrays of nanoparticles have been demonstrated successfully by various techniques a controlled way of building ordered arrays of three dimensional (3D) nanoparticle structures remains challenging. This book describes a new technique called the nanoscopic lens which is able to produce a variety of 3D nano structures in a controlled manner. This ebook describes the nanoscopic lens technique and how it can serve as the foundation for device development that is not limited to a variety of optical magnetic and electronic devices but can also create a wide range of bio nanoelectronic devices.