Download Data Storage at the Nanoscale: Advances and Applications by Gan Fuxi, Wang Yang PDF
By Gan Fuxi, Wang Yang
In the massive facts period, info garage is likely one of the cores within the entire details chain, inclusive of creation, move, sharing, and at last processing. through the years, the expansion of knowledge quantity has been explosive. at the present time, a number of garage companies desire stories with better density and potential. in addition, info garage within the significant information functions might be eco-friendly, secure, and lengthy lifestyles. The garage density of thoughts used to be principally improved in recent times as a result fast improvement of nanotechnology. The minimal characteristic dimension of optical, magnetic, and electric thoughts is already on the nanometer scale. moreover, the interdisciplinary cooperation of nanotechnology can facilitate the advance of information garage expertise to accomplish better operation pace, reduce energy intake, and elevated retention time. This booklet compiles the state-of-the-art examine growth of nanometer-scale facts garage. the most themes coated comprise optical reminiscence, random entry reminiscence, magnetic reminiscence, and hybrid reminiscence. The textual content emphasizes more effective tools for information garage improvement and purposes.
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18, this beam at 3 nm inside the cover layer after passing through the 10 nm air gap has a size of 60 nm, which may enable the reading and writing of 1 TB/layer disk. 15 Schematic of a near-field recording system using linear polarized light and a bowtie antenna consisting of 40 nm gold film, with the air gap of 2 nm between the disk and the SIL. 16 Structure of a bowtie antenna consisting of 40 nm gold film and the localized 10 nm light spot at 2 nm below the antenna: (a) Device structure. (b) Electric intensity image.
Super-resolution techniques that aiming to engineer a small laser spot can be generalized into several different approaches: The first approach and relatively traditional approach is so called far-field technique, which is to modulate the phase and/ or amplitude of a laser beam before it entering the focusing objective lens. The modulation can be achieved by using phase masks [1, 2], adaptive optics element such as liquid crystal phase modulators, deformable mirrors, etc. The idea behind it is that through the modulation the wavefront, the light at the focal center can be maximized, so that a smaller laser spot is created.
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