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Scientists have develop a raw character of optical disc that can increase information entrepot capacity to the " Pbit " level — 125 TB of data point , or the combined storage capacity of about 15,000 DVDs .
visual discs , such as videodisk and Blu - ray discs , are lasting and cheap . A standard single - layer Blu - ray disc can store 25 gigabyte . By comparison , some USB flash cause can hive away 1 TB , and hard magnetic disk drives ( HDDs ) can hold up to 16 TB .
Scientists have developed a new type of optical disc that can increase information storage capacity to the “petabit” level — 125 terabytes of data.
But a squad of scientists has create a novel type of material , call " dyestuff - dope photoresist with aggregation - induced discharge luminogens " ( AIE - DDPR ) with a in high spirits areal tightness ( the amount of datum that can be stored in a given expanse ) that can declare oneself far denser computer memory content than typical HDDs ) .
Given the increasing amount of information we mother each day , from instant substance to streaming video , AIE - DDPR optical discs have the potential to revolutionise datum storage . visual discs take up less blank space than current storage method , be more environmentally well-disposed and could become less expensive than datum repositing array .
They described the particular in a newspaper print Feb. 21 in the journalNature .
To enable nanoscale writing , show information on an optical disk at the molecular grade , AIE - DDPR comprises two chemicals called 2 - isopropylthioxanthone ( ITX ) and dipentaerythritol penta - acrylate ( DTPA ) . ITX is an effective photoinitiator , in that it react when display to light , such as that from a optical maser electron beam . DTPA is a monomer — a pocket-size particle — with a eminent photosensitivity , meaning it reacts strongly to luminance . In result , the two meld to enable more information to be salt away more obtusely than ever before .
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For nanoscale reading material , a chemical called hexaphenylsilole ( HPS ) and a Modern stuff squall AIE luminogens ( AIEgens ) were incorporated into the movie . AIEgens already have an incredibly high fluorescence — a high absorption rate of electromagnetic radiation — but this was further enhanced using a extremely focused laser beam of light that fired in bursts lasting a femtosecond ( one - millionth of one - billionth of a second ) during the piece of writing process . This result in a far denser mean of storing data on an opthalmic disc .
The scientists used multilayer nanoscale compose and interpretation , storing information in multiple level at the molecular shell , to increase the disc ’s computer storage tightness . By dilute the distance between layers to 1 micrometer caliper ( one - thousandth of a millimeter ) , the research team stored and retrieved 100 layers of data . The storage electrical capacity was further expanded by storing selective information on both sides of the disc , much like a vinyl radical disc .
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Using multilayer nanoscale writing , the scientists stored more than 1 petabit of data on a single AIE - DDPR phonograph record . This is more than the capacity of 5,000 Blu - rays .
To be commercially viable , the committal to writing speed will need to be improved and made more free energy efficient . The team hopes to accomplish this by using a far more precise optical maser ray of light than was used in the experiment .
give the increasing amount of data we bring forth each day , from instant messages to streaming video , AIE - DDPR ocular discs have the potentiality to revolutionize datum storage . Optical phonograph record take up less space than current entrepot methods and could become less expensive than data storage array .
