Three-dimensional information storage of polymer doped with nano-silver

2015 ◽  
Vol 57 (11) ◽  
pp. 2662-2665
Author(s):  
Jianwen Cai ◽  
Wenhao Huang
Keyword(s):  
Three Dimensional ◽  
Information Storage ◽  
Nano Silver

Information storage materials: nanoscale characterisation by three-dimensional atom probe analysis

2004 ◽  
Vol 52 (10) ◽  
pp. 2847-2862 ◽  
Author(s):  
D.J. Larson ◽  
A.K. Petford-Long ◽  
Y.Q Ma ◽  
A. Cerezo
Keyword(s):  
Three Dimensional ◽  
Atom Probe ◽  
Information Storage ◽  
Storage Materials ◽  
Probe Analysis ◽  
Atom Probe Analysis

Two-Photon Three-Dimensional Optical Storage of a New Photobleaching Material

2012 ◽  
Vol 532-533 ◽  
pp. 8-11
Author(s):  
Jian Wen Cai
Keyword(s):  
Data Storage ◽  
Three Dimensional ◽  
Optical Storage ◽  
Optical Data Storage ◽  
High Density ◽  
Information Storage ◽  
Optical Data ◽  
Optical Information ◽  
Two Photon ◽  
Optical Information Storage

Two-photon three-dimensional optical data storage is an important method to realize high density storage and ultra-high density storage. This paper introduces the the basic principle of two-photon photobleaching optical storage, describes two-photon three-dimensional optical storage system and the absorption and fluorescence spectra of a new type of photobleaching materials BASF in detail, carries out the experimental study that two-photon information is written and read out against a new photobleaching material of BASF using femtosecond pulse laser wavelength is 800nm, and realize two layers of optical information storage, the information point spacing is 8μm and the interlayer distance is 15μm; two-layer information point signal strength is recognized using Recognition algorithm. The experiment proved that new photobleaching material of BASF can be used for two-photon three-dimensional optical storage, that has laid a solid foundation for the high-density and ultra-high density optical information storage materials research.

scholarly journals Изменение направления оси легкого намагничивания массивов сегментированных нанонитей Ni/Cu с увеличением длины сегмента Ni

2021 ◽  
Vol 63 (7) ◽  
pp. 881
Author(s):  
А.А. Мистонов ◽  
И.С. Дубицкий ◽  
А.Х.А. Елмекави ◽  
Е.Г. Яшина ◽  
С.В. Сотничук ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Easy Axis ◽  
Storage Systems ◽  
Three Dimensional ◽  
Magnetic Behavior ◽  
Diameter Ratio ◽  
Information Storage ◽  
Promising Material ◽  
Segment Length ◽  
Competing Interactions

Arrays of ordered segmented nanowires are considered as a promising material for three-dimensional information storage systems. However, the presence of a large number of competing interactions significantly complicates the description of the magnetic behavior of such systems. In this work, the influence of the length of the nickel segment on the integral magnetic properties of the array is investigated. In particular, it is shown that the change in the direction of the easy axis of magnetization occurs when the segment length to diameter ratio is in the range from 10 to 20.

Locus of the Axis of Vibration for a Vibrating System With Variable Location of a Mass Center

2000 ◽  
Author(s):  
Byung Ju Dan ◽  
Yong Je Choi
Keyword(s):  
Vibration Analysis ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Analytical Form ◽  
Point Of View ◽  
Information Storage ◽  
Mode Shapes ◽  
Storage Device ◽  
Geometrical Approach ◽  
Mass Center

Abstract A typical approach to a linear vibration analysis of an elastically supported single rigid body is to rearrange a dynamic model into a corresponding eigenvalue problem. From the geometrical point of view, the eigenvectors in the planar vibration analysis can be interpreted as pure rotations about the vibration center or pure translations. In a three dimensional space, they represent repetitive twisting motions about the axes of vibrations. By taking a geometrical approach to the vibration analysis, the vibration mode shapes may be better understood. In this paper, the influence of variable location of a mass center on the locations of the axes of vibrations and the natural frequencies are investigated by means of the locus of the axis of vibration expressed in analytical form, which represents the geometrical locus of the eigenvector. A numerical example is used to clearly illustrate the vibration phenomena of an optical pick-up used in an information storage device.

Stochastic chromatin packing of 3D mitotic chromosomes revealed by coherent X-rays

2021 ◽  
Vol 118 (46) ◽  
pp. e2109921118
Author(s):  
Daeho Sung ◽  
Chan Lim ◽  
Masatoshi Takagi ◽  
Chulho Jung ◽  
Heemin Lee ◽  
...  
Keyword(s):  
Information Transfer ◽  
3D Structure ◽  
Three Dimensional ◽  
Information Storage ◽  
Atomic Scale ◽  
Scaling Analysis ◽  
X Rays ◽  
Mitotic Chromosomes ◽  
Metaphase Chromosomes ◽  
Chromatin Packing

DNA molecules are atomic-scale information storage molecules that promote reliable information transfer via fault-free repetitions of replications and transcriptions. Remarkable accuracy of compacting a few-meters-long DNA into a micrometer-scale object, and the reverse, makes the chromosome one of the most intriguing structures from both physical and biological viewpoints. However, its three-dimensional (3D) structure remains elusive with challenges in observing native structures of specimens at tens-of-nanometers resolution. Here, using cryogenic coherent X-ray diffraction imaging, we succeeded in obtaining nanoscale 3D structures of metaphase chromosomes that exhibited a random distribution of electron density without characteristics of high-order folding structures. Scaling analysis of the chromosomes, compared with a model structure having the same density profile as the experimental results, has discovered the fractal nature of density distributions. Quantitative 3D density maps, corroborated by molecular dynamics simulations, reveal that internal structures of chromosomes conform to diffusion-limited aggregation behavior, which indicates that 3D chromatin packing occurs via stochastic processes.

scholarly journals Three-Dimensional Visualization of the Crack-Growth Behavior of Nano-Silver Joints During Shear Creep

2014 ◽  
Vol 44 (2) ◽  
pp. 761-769 ◽  
Author(s):  
Yansong Tan ◽  
Xin Li ◽  
Gang Chen ◽  
Yunhui Mei ◽  
Xu Chen
Keyword(s):  
Crack Growth ◽  
Three Dimensional ◽  
Growth Behavior ◽  
Crack Growth Behavior ◽  
Shear Creep ◽  
Nano Silver

A Scanning-Probe Technique for Mapping the Hardness of Lead-Free Solders

2014 ◽  
Vol 1652 ◽  
Author(s):  
Jennifer L. Hay ◽  
Carlos Morillo ◽  
Julie Silk
Keyword(s):  
Solder Joint ◽  
Three Dimensional ◽  
Local Stress ◽  
Information Storage ◽  
Scanning Probe ◽  
Gold Plating ◽  
Nano Indentation ◽  
Scanned Images ◽  
Lead Free Solders ◽  
Force Displacement

ABSTRACTA rapid nano-indentation measurement technique is employed to produce surface maps of hardness. Each indentation cycle requires less than three seconds, including surface approach, contact detection, force application, withdrawal, and movement to the next indentation site. Traditional nano-indentation analyses are applied to the force-displacement measurements from each indentation, but information storage and presentation owe much to scanning-probe technology. Consequently, this nano-indentation technique produces three-dimensional images of mechanical properties which are stored and manipulated just like scanned images.In the present work, we use this technique to map the hardness of a SAC 305 solder joint with gold plating. After extended isothermal aging, the solder joint comprises three constituents: a tin-rich matrix, a bulk intermetallic AuSn4, and an interfacial intermetallic (Cu, Ni, Au)6Sn5. The softest material is the tin-rich matrix, which has a hardness of 0.51±0.07 GPa. The hardness of the bulk intermetallic is 2.12±0.18 GPa. The interfacial intermetallic has extraordinary hardness— greater than 8 GPa. Under uniform plastic strain, the mismatch in hardness between the interfacial intermetallic and surrounding material may increase the local stress intensity factor which drives interfacial fracture.

The stereochemical code and the logic of a protein molecule

1969 ◽  
Vol 2 (1) ◽  
pp. 65-92 ◽  
Author(s):  
A. M. Liquori
Keyword(s):  
Tertiary Structure ◽  
Polypeptide Chain ◽  
Water Solution ◽  
Storage System ◽  
Three Dimensional ◽  
Protein Molecule ◽  
Information Storage ◽  
Chemical Information ◽  
Amino Acid Residues ◽  
Surrounding Water

Like DNA and the various forms of RNA, a protein molecule is an information storage system. It contains in fact one or more polypeptide chains which may be regarded as linear sequences of twenty different types of monomer units. It is now clearly established that the chemical information corresponding to a given sequence of a polypeptide chain, containing n amino acid residues, is stored in a segment of one of the two strands of DNA containing 3n nucleotides. The transfer of such information from a gene to a polypeptide chain takes place according to the well-known process involving a transcription and a chemical translation step. This last step leads to a polymer which, in appropriate conditions, takes a three-dimensional conformation or tertiary structure which should correspond to a free-energy minimum of the molecule and its surrounding water solution.

Sign in / Sign up

Export Citation Format

Share Document