Phase-change storage is widely used in optical information technologies (DVD, CD-ROM and so on), and recently it has also been considered for non-volatile memory applications. This work reports advances in thermal dat...
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Phase-change storage is widely used in optical information technologies (DVD, CD-ROM and so on), and recently it has also been considered for non-volatile memory applications. This work reports advances in thermal data recording of phase-change materials. Specifically, we show erasable thermal phase-change recording at a storage density of 3.3 Tb inch(-2), which is three orders of magnitude denser than that currently achievable with commercial opticalstorage technologies. We demonstrate the concept of a thin film nanoheater to realize ultra-small heat spots with dimensions of less than 50 nm. Finally, we show in a proof-of-concept demonstration that an individual thin-film heater can write, erase and read the phase of these storage materials at competitive speeds. This work provides important stepping stones for a very-high-density storage or memory technology based on phase-change materials.
Magnetic Micro Electro-mechanical Systems (Magnetic MEMS) provide transducer capabilities ranging from thin-film storage devices and micro sensors to micro actuator solutions. This paper provides an overview over magn...
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ISBN:
(纸本)9781566775601
Magnetic Micro Electro-mechanical Systems (Magnetic MEMS) provide transducer capabilities ranging from thin-film storage devices and micro sensors to micro actuator solutions. This paper provides an overview over magnetic thin-film devices developed at the Institute for Microtechnology at the Leibniz Universitaet Hannover's Center for Production technology (PZH) in Garbsen, Germany. In the area of datastorage, it presents a microcoil for opticaldatastorage. In the field of micro sensors it shows two inductive length measurement systems, an eddy current proximity sensor and a micro strain gauge for force measurements. Micro actuators built as linear positioners and as tilting platforms, as well as a new actuator principle based on the magnetic shape memory (MSM) effect conclude the paper copyright The Electrochemical Society.
Scanning probe microscope (SPM) techniques, invented 20 years ago, act as eyes for nanotechnology and nanoscience research and development, for imaging and characterizing surface topography and properties at atomic re...
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ISBN:
(纸本)9889884445
Scanning probe microscope (SPM) techniques, invented 20 years ago, act as eyes for nanotechnology and nanoscience research and development, for imaging and characterizing surface topography and properties at atomic resolution. To meet the rapid pace of nanodevice downscaling, atomic force microscopy (AFM) has evolved from a laboratory research instrument to an indispensable, industrial metrology tool used for geometric dimension control in nanoelectronic device' research development and manufacturing. This article gives a technical overview on the state-of-the-art applications of automated industrial AFM in process characterization and inline monitoring for semiconductor, photomask and data-storage read/write head manufacturing. Inline metrics such as etch depth, line/trench CD, sidewall profile, via dimension, and CMP dishing/erosion for manufacturing lithography, etch, planarization, and film deposition processes will be covered at steps ranging from shallow trench isolation (FEOL) to copper interconnect (BEOL). Unique applications such as high aspect ratio trench or hole depths, carbon nanotube probes (CNT) for the 65nm node technology, and advances in AFM scanning algorithm, probe design, software interface, and data analysis capability are also reviewed. CD-AFM as a calibration reference for CD-SEM and optical scatterometry will be discussed.
The practice of science experienced a number of paradigm shifts in the 20th century, including the growth of large geographically dispersed teams and the use of simulations and computational science as a third branch,...
The practice of science experienced a number of paradigm shifts in the 20th century, including the growth of large geographically dispersed teams and the use of simulations and computational science as a third branch, complementing theory and laboratory experiments. The recent exponential growth in network capacity, brought about by the rapid development of agile optical transport, is resulting in another such shift as the 21 st century progresses. Essential to this new branch of e-Science applications is the capability of transferring immense amounts of data: dozens and hundreds of TeraBytes and even PetaBytes. The invention of the transistor in 1947 at Bell Labs was the triggering event that led to the technology revolution of the 20th century. The completion of the Human Genome Project (HGP) in 2003 was the triggering event for the life science revolution of the 21st century. The understanding of the genome, DNA, proteins, and enzymes is prerequisite to modifying their properties and the advancement of systematic biology. Grid Computing has become the fundamental platform to conduct this e-Science research. Vast increases in data generation by e-Science applications, along with advances in computation, storage and communication, affect the nature of scientific research. During this decade, crossing the "Peta" line is expected: Petabyte in data size, Petaflop in CPU processing, and Petabit/s in network bandwidth. Numerous challenges arise from a network with a capacity millions of times greater than the public Internet. Currently, the distribution of large amounts of data is restricted by the inherent bottleneck nature of today's public Internet architecture, which employs packet switching technologies. Bandwidth limitations of the Internet inhibit the advancement and utilization of new e-Science applications in Grid Computing. These emerging e-Science applications are evolving in data centers and clusters; however, the potential capability of a globally distribut
Video compression is an essential requirement for transmission and storage of data. As technologyadvances, the type, size and bitrate requirements of a system become more complex. Motion estimation is an important pa...
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Video compression is an essential requirement for transmission and storage of data. As technologyadvances, the type, size and bitrate requirements of a system become more complex. Motion estimation is an important part of video compression. In this paper the JM 9.0 software is modified to implement different motion estimation techniques. These techniques reduce the time taken for motion estimation and for the total encoding process while not significantly affecting the bitrate
COMPANIES DEVELOPING HOLO-graphic datastorage systems have made enormoustechnical advances toward their goal of inventing an opticaldatastorage system with far greaterstorage capacity and faster access to data than...
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COMPANIES DEVELOPING HOLO-graphic datastorage systems have made enormoustechnical advances toward their goal of inventing an opticaldatastorage system with far greaterstorage capacity and faster access to data than even blue-laser digital versatile discs(DVDs).Thefirst commercial applications,though modest,are feasible in the short *** polymercompanies,recognizing a nascent market,are keen on leveraging their expertise for the technology.
This paper brings forward one concept of holographic storage of multi-level digital data at first. It is that each pixel includes more information than 1 bit, which means that a multi-level digital data image provides...
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ISBN:
(纸本)0819455989
This paper brings forward one concept of holographic storage of multi-level digital data at first. It is that each pixel includes more information than 1 bit, which means that a multi-level digital data image provides more information than a binary digital data image with the same pixels. So, the capacity will be increased with this technology Furthermore, some aspects of holographic storage of multi-level digital data, such as the multi-level coding, storage characters and the quality of the stored image are debated. Finally, we research this holographic storagetechnology by experiment.
Multi-wavelength and multilevel (MWML) opticalstorage with photochromic media is a novel technology that can increase storage capacity and transfer rates significantly. Signal processing and coding methods for the MW...
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ISBN:
(纸本)0819455989
Multi-wavelength and multilevel (MWML) opticalstorage with photochromic media is a novel technology that can increase storage capacity and transfer rates significantly. Signal processing and coding methods for the MWML storage channel are introduced in this paper. Two-dimensional codes with parallel detection and equalization are studied to increase storage capacity and combat the crosstalk between different wavelength materials. Multilevel amplitude modulation and M-ary runlength-limited (RLL) codes are described and compared for achieving higher coding capacity. The novel MWML recording technology has the potential to be applicable for the next generation opticaldatastorage.
Based on DWDM technology, optical fiber head can be used to realize multi-wavelengths parallel transmission. An integrated optical fiber head has been optimum designed, which can be used in the multi-layers storage sy...
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ISBN:
(纸本)0819455989
Based on DWDM technology, optical fiber head can be used to realize multi-wavelengths parallel transmission. An integrated optical fiber head has been optimum designed, which can be used in the multi-layers storage system. The pick-up signal intensity distributions have been simulated for the multi-layers parallel storage system.
The readout of photochromic multi-wavelength storage was analyzed, and its model was established in this paper, with the disk reflectivity and the recording information distribution optional. The luminous power of the...
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ISBN:
(纸本)0819455989
The readout of photochromic multi-wavelength storage was analyzed, and its model was established in this paper, with the disk reflectivity and the recording information distribution optional. The luminous power of the readout was divide into two parts: the part without the disturbance of other materials and the reading crosstalk. The expressions of them were presented, which were useful for the further analysis of the crosstalk and the crosstalk suppression method.
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