Selective fluorescence functionalization of dye-doped polymerized structures fabricated by direct laser writing (DLW) lithography

Spatially- and intensity-selective fluorescence photopolymerized resins are fabricated through a thermally-induced di-aggregation mechanism with applications as optical data storage devices.

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Spatial control of organic nanocrystal nucleation in sol–gel thin films for 3-D optical data storage devices or chemical multi-sensors

Journal of Crystal Growth ◽

10.1016/j.jcrysgro.2005.06.049 ◽

2005 ◽

Vol 283 (3-4) ◽

pp. 444-449 ◽

Cited By ~ 14

Author(s):

Estelle Botzung-Appert ◽

Julien Zaccaro ◽

Cécile Gourgon ◽

Yves Usson ◽

Patrice L. Baldeck ◽

...

Keyword(s):

Thin Films ◽

Data Storage ◽

Sol Gel ◽

Optical Data Storage ◽

Optical Data ◽

Spatial Control ◽

Storage Devices

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Studies on Structural, Morphological, Local Electrical, Optical and Magnetic Properties of Iron Site Manganese Substituted Yttrium Orthoferrite

10.21203/rs.3.rs-113350/v1 ◽

2020 ◽

Author(s):

Turghunjan Gholam ◽

Liu Peng ◽

Dong Yu-Hui ◽

Wang Hui-Qiong

Keyword(s):

Magnetic Properties ◽

Data Storage ◽

Local Structure ◽

Nearest Neighbor ◽

Optical Data Storage ◽

Optical Data ◽

Magnetic Field Sensors ◽

Storage Devices ◽

Yttrium Orthoferrite ◽

Optical And Magnetic Properties

Abstract Yttrium orthoferrite (YFeO3) is of considerable interest for its potential application in magnetic field sensors and magneto optical data storage devices. Doping is one of the effective approaches to tune the compound properties. And it is important to determine the doping sites of the dopants to better understanding the related mechanism. In this work, Manganese (Mn) doped YFeO3, i.e., YFMxO powders with 0 ≤ x ≤ 0.1 were synthesized by hydrothermal method to study the influences of doping on their structural, morphological, local electrical, optical and magnetic properties. The experimental results show that Mn dopants occupy Iron (Fe) sites and that all these samples exhibit an orthorhombic structure with space group Pnma. Refined structure parameters are presented. Morphology images show the shape evolution from layered to multilayered with increasing Mn content. The Fe and Y K-edge local structure studies indicate that the valency of Fe and Y is mainly found in trivalent state, which also indicate that substitution of Mn ions not only affects the nearest neighbor atomic shell of Fe but also affects the nearest neighbor’s local structure of Y atoms. IR spectra reveal the characteristic vibrations of the obtained YFMxO samples. From the magnetic study, it is observed that the substitution of Y ions by Mn ions changes the magnetic property of YFeO3 from ferromagnetic to paramagnetic. Our results show that the addition of Mn exhibits an evident influent on the local structural and magnetic properties.

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Nanoscale Energy Transport in Information Technology Research With an Application to High-Density Data Storage Devices and Systems

Heat Transfer, Volume 7 ◽

10.1115/imece2002-32110 ◽

2002 ◽

Cited By ~ 1

Author(s):

Mehdi Asheghi ◽

Yizhang Yang ◽

Sadegh M. Sadeghipour ◽

James A. Bain ◽

Katayun Barmak ◽

...

Keyword(s):

Information Technology ◽

Data Storage ◽

Energy Transport ◽

Random Access ◽

Thermal Design ◽

Optical Data ◽

Thermally Induced ◽

Storage Devices ◽

Superparamagnetic Limit ◽

It Revolution

By all measures, the data storage industry is one of the most important components of the Information Technology (IT) revolution. In recent years, many of the emerging technologies rely heavily on energy transport at extremely short time and length scales as a mean to overcome the superparamagnetic limit - a serious impediment to future advancement of storage technology. Additionally, thermally induced failure and reliability issues at the nanoscale are becoming increasingly important due to rapid device miniaturization in data storage applications. Further advances in high-technology data storage systems will be difficult, if not impossible, without rigorous treatment of nanoscale energy transport. This manuscript reviews the thermal design issues and challenges in thermally assisted magnetic disk recording, thermally assisted scanned probe recording, phase change optical data recording, magnetoresistive random access memory (MRAM) and giant magnetoresistive (GMR) heads. Relevant thermally induced failures in GMR heads, write coil, interconnects and MRAM will be discussed as well.

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Five-Dimensional Optical Data Storage Based on Ellipse Orientation and Fluorescence Intensity in a Silver-Sensitized Commercial Glass

Micromachines ◽

10.3390/mi11121026 ◽

2020 ◽

Vol 11 (12) ◽

pp. 1026

Author(s):

Chang-Hyun Park ◽

Yannick Petit ◽

Lionel Canioni ◽

Seung-Han Park

Keyword(s):

Data Storage ◽

Fluorescence Intensity ◽

Optical Data Storage ◽

Optical Data ◽

Storage Device ◽

Storage Unit ◽

Recording Process ◽

Laser Focus ◽

Direct Laser ◽

Commercial Glass

Five-dimensional (5D) recording and decoding is demonstrated by using femtosecond direct laser writing in a silver-containing commercial glass. In particular, laser intensities and ellipse orientations generated by anamorphic focusing are employed to produce 5D data storage unit (3D for XYZ, 1D for the orientation of the elliptically-shaped data storage unit and 1D for its fluorescence intensity). In the recording process, two different images of a 4-bit bitmap format were simultaneously embedded in the medium by multiplexing the elliptical orientation of the laser focus and its intensity so as to access oriented elliptical patterns with independent fluorescence intensity. In the decoding process, two merged original images were successfully reconstructed by comparing each data storage unit with a fabricated calibration matrix of 16 × 16 levels for elliptic orientations and fluorescence intensities. We believe this technique can be applied to semi-permanent high-density data storage device.

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The Patterned Optical Phase Change Recording Media

Design, Synthesis, and Applications ◽

10.1115/nano2005-87062 ◽

2005 ◽

Author(s):

Evan Small ◽

Sadegh M. Sadeghipour ◽

Mehdi Asheghi

Keyword(s):

Phase Change ◽

Data Storage ◽

Numerical Aperture ◽

Data Access ◽

Optical Microscope ◽

Optical Data Storage ◽

High Density ◽

Optical Data ◽

Optical Phase ◽

Storage Devices

Demands for the high storage capacities and rates of data transfer have been overwhelming in the recent years. With the increasing use of multimedia, the rewritable optical phase-change disks, e.g. CD and DVD, have become more popular. The optical PC data storage devices provide relatively short data access rates (∼ 10 MHz) and moderate areal densities. As in other areas of data storage, there has been tremendous demand and pressure, driven by consumer application, for inexpensive high-density PC systems. So far, the optical data storage industry has managed to meet the demands by using lasers with shorter wavelengths and objective lenses with higher numerical aperture (NA). Several strategies such as “multilevel storage layers” [1] and “mark radial width modulation” [2] have been proposed for the next generation of the high-density PC data storage devices. There have been advances in near field optical techniques to increase density (40 Gb/in) using solid immersion lens [3]. Hosaka et al. [4] demonstrated 60 nm domains in phase change media that translates to 170 Gb/in2 using a scanning near-filed optical microscope. Kado and Tohda [5] used an atomic force microscope (AFM) to locally modify the electrical property (×100) of a PC material by applying an electrical pulse between the probe and media. They achieved an areal density near 1 Tbits/cm2.

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Facile and fast photosensing of polarity by stimuli-responsive materials based on spiropyran for reusable sensors: a physico-chemical study on the interactions

Journal of Materials Chemistry C ◽

10.1039/c7tc02232h ◽

2017 ◽

Vol 5 (26) ◽

pp. 6588-6600 ◽

Cited By ~ 33

Author(s):

Amin Abdollahi ◽

Zeinab Alinejad ◽

Ali Reza Mahdavian

Keyword(s):

Data Storage ◽

Chemical Sensors ◽

Optical Switching ◽

Chemical Study ◽

Optical Data Storage ◽

Optical Data ◽

Stimuli Responsive ◽

Responsive Materials ◽

Storage Devices ◽

Physico Chemical

Stimuli-responsive materials based on spiropyran, which show reversible solvatochromism and photochromism under UV irradiation, could be used for advanced devices such as chemical sensors, optical data storage devices, and optical switching displays.

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Copper vanadates as candidate materials for phase change optical memory

Journal of Materials Research ◽

10.1557/jmr.1992.0741 ◽

1992 ◽

Vol 7 (3) ◽

pp. 741-744 ◽

Cited By ~ 3

Author(s):

D.P. Birnie ◽

J.D. Weinberg ◽

D.G. Swanson

Keyword(s):

Thin Film ◽

Phase Change ◽

Data Storage ◽

Optical Memory ◽

Optical Data Storage ◽

Optical Data ◽

Storage Devices ◽

Phase Development ◽

Successful Phase ◽

Oxide Melts

Several copper vanadium oxide melts were tested for possible application as the active medium in phase-change optical data storage devices. These materials were melted in the bulk and then quenched. Their phase development was characterized to help determine their applicability to optical data storage. It was found that they satisfy many of the criteria necessary for successful phase-change data storage; further studies of their behavior in thin film geometry would be warranted.

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