Evaluation of Data Stability and Analysis of Degradation Factors of Digital Versatile Disk Recordable (DVD+R) for Archival Application

Lee, Kwan Yong; Lím, D.; Kim, Ki‐Hyun; Cho, Won Ik; Kim, Young Joo

doi:10.1143/jjap.51.08jc01

Cited by 4 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Optical disc storage, by virtue of its inherent characteristics such as durability and disaster resistance, is suitable for satisfying the storage needs of enterprises. [2][3][4][5] Several technologies of realizing large-capacity optical storage have been reported, such as a volume holographic memory, [6][7][8][9] a solidimmersion objective lens system, [10][11][12] a multilayer disc system, [13][14][15] and others. [16][17][18][19][20][21][22] Multilayer technology for optical discs with a separated guide layer has been reported 23) as one of the most promising approaches for storing large-capacity data in a single disc.…”

Section: Introductionmentioning

confidence: 99%

New Wobble-Address Format for an Optical Disc with a Separated Guide Layer

Ogawa

Usui

Okano

et al. 2013

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

A low specific on-resistance (R S,on ) silicon-on-insulator (SOI) trench MOSFET (metal-oxide-semiconductor-fieldeffect-transistor) with a reduced cell pitch is proposed. The lateral MOSFET features multiple trenches: two oxide trenches in the drift region and a trench gate extended to the buried oxide (BOX) (SOI MT MOSFET). Firstly, the oxide trenches increase the average electric field strength along the x direction due to lower permittivity of oxide compared with that of Si; secondly, the oxide trenches cause multiple-directional depletion, which improves the electric field distribution and enhances the reduced surface field (RESURF) effect in the SOI layer. Both of them result in a high breakdown voltage (BV). Thirdly, the oxide trenches cause the drift region to be folded in the vertical direction, leading to a shortened cell pitch and a reduced R S,on . Fourthly, the trench gate extended to the BOX further reduces R S,on , owing to the electron accumulation layer. The BV of the MT MOSFET increases from 309 V for a conventional SOI lateral double diffused metal-oxide semiconductor (LDMOS) to 632 V at the same half cell pitch of 21.5 µm, and R S,on decreases from 419 mΩ · cm 2 to 36.6 mΩ · cm 2 . The proposed structure can also help to dramatically reduce the cell pitch at the same breakdown voltage.

show abstract

Section: Introductionmentioning

confidence: 99%

New Wobble-Address Format for an Optical Disc with a Separated Guide Layer

Ogawa

Usui

Okano

et al. 2013

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

show abstract

“…In the investigation described herein, we adopted tests and criteria specified in international standards for optical discs. [6][7][8][9] Specifically, ISO=IEC10995 for DVD-R discs and ISO=IEC16963 for the CD-R discs call for estimation of the disc life from the 95% confidence interval lower limit obtained from the condensed Eyring or Arrhenius equations using data from storage in ambient air at a temperature of 25 °C and a relative humidity of 50%, giving a probability of survival of 95%. It should be noted that an ISO test method for BD-R discs was not in existence as of November 2014 and hence we applied the test conditions specified in ISO= IEC16963 when analyzing BD-R discs.…”

mentioning

confidence: 99%

Archival-grade optical disc design and international standards

Fujii¹,

Kojyo²,

Endo³

et al. 2015

Jpn. J. Appl. Phys.

View full text Add to dashboard Cite

Optical discs currently on the market exhibit large variations in life span among discs, making them unsuitable for certain business applications. To assess and potentially mitigate this problem, we performed accelerated degradation testing under standard ISO conditions, determined the probable disc failure mechanisms, and identified the essential criteria necessary for a stable disc composition. With these criteria as necessary conditions, we analyzed the physical and chemical changes that occur in the disc components, on the basis of which we determined technological measures to reduce these degradation processes. By applying these measures to disc fabrication, we were able to develop highly stable optical discs.

show abstract

Documentary heritage: fungal deterioration in Compact Discs

2021

View full text Add to dashboard Cite

In recent years, there has been an exponential growth in the use of digital media for data storage and the creation of museums, libraries and digital archives. In particular, Compact Discs Recordable (CD-R) have become one of the most used tools for archiving documents related to cultural heritage. Many authors have investigated only the CD longevity, but very few studies have focused on their biological deterioration. The aim of this work was to examine the CD-R biodeterioration following two ways: (1) search badly preserved CD-R, showing clear degradation spots and verify that it is fungal deterioration; (2) fungal inoculation tests on blank CD-R to verify their bioreceptivity. The analysis of a badly preserved CD-R showed clear degradation spots, highlighting, after cultural and molecular analysis, the presence on the surface of three different fungi: Chaetomium globosum, Trichoderma atroviride e Coniochaeta sp. For the in vitro inoculation tests we used conidia suspensions of Cladosporium cladosporioides and Penicillium chrysogenum, and we observed the growth for 6 months. At the end of experiment, both fungi colonized the CD-R surface with hyphae and mycelia clearly visible, causing also loss of material and fractal structure presence. For the CD-R use as cultural heritage archiving, the correct storage is an essential phase and, in light of the results obtained, it will be necessary not only to consider the environmental factors (temperature, relative humidity) but also the biological deterioration caused by airborne fungi. Therefore, effort needs to be taken to regularly monitor temperature and relative humidity and it is essential to periodically conduct cleaning of optical media.

show abstract

Evaluation of Data Stability and Analysis of Degradation Factors of Digital Versatile Disk Recordable (DVD+R) for Archival Application

Cited by 4 publications

References 16 publications

New Wobble-Address Format for an Optical Disc with a Separated Guide Layer

New Wobble-Address Format for an Optical Disc with a Separated Guide Layer

Archival-grade optical disc design and international standards

Documentary heritage: fungal deterioration in Compact Discs

Contact Info

Product

Resources

About