Optical disks, USB sticks, and magnetic hard drives can only store digital information for a few decades, and their maintenance is often energy-intensive, making these methods less than ideal for storing data at home. He therefore considered the use of particles as substitutes, particularly in DNA data storage. However, these methods present their own challenges, including high synthesis costs and slow reading and writing rates.
Now, Harvard scientists have figured out how to use fluorescent dyes as data storage qubits cheaper and faster, according to new paper Published in the journal ACS Central Science. Researchers tested their method by storing a 19th century physicist Michael FaradayBasic papers on electromagnetism and chemistry, plus a JPEG image by Faraday.
“This method can provide access to archival data storage at a low cost,” Co-author Amit A. Nagarkar . said, who conducted the research as a postdoctoral fellow in the Harvard Laboratory of George Whitesides. “[It] Provides access to long-term data storage using current commercial technologies: inkjet printing and fluorescence microscopy. Nagarkar is now working with a startup that wants to commercialize the method.
There are good reasons for the idea of using DNA to store data. as we have Previously mentionedDNA contains four chemical building blocks – adenine (A), thymine (T), guanine (G), and cytosine (C) – that make up one type of code. Information can be stored in DNA by converting the data from the binary code to base code 4 and assigning it to one of the four characters. DNA has a much higher data density than traditional storage systems. only one gram can represent Nearly a billion terabytes (1 zettabyte) of data. It is a powerful medium: stored data can be held for long periods, decades, or even centuries.
Storage of DNA data has made significant advances in recent years, bringing some inventive twists and turns on the basic method. For example, two years ago, Stanford scientists successfully He made a 3D printed copy of the Stanford Rabbit – a common test model in 3D computer graphics – which stored printing instructions to reproduce the rabbit. The rabbit holds about 100 kilobytes of data, thanks to the addition of nanoparticles containing DNA to the plastic used to be 3D-printed.
But using DNA also presents daunting challenges. For example, the storage and retrieval of DNA data usually takes a long time, taking into account all the required sequences. Our ability to synthesize DNA still has a long way to go before it becomes a practical way to store data. Therefore, other scientists have explored the possibility of using non-biological polymers to store molecular data, by decoding (or reading) the information stored by sequencing the polymers using tandem mass spectrometry. However, the manufacture and purification of synthetic polymers is an expensive, complex and time-consuming process.
In 2019, Whiteside Lab Show successfully Store information in a mixture of commercially available information few peptides on a metal surface, without the need for long and expensive synthesis techniques. The lab used a mass spectrometer to mark the molecules by molecular weight in order to read the stored information. But there are still some issues, including that the information got corrupted while reading. In addition, the read process was slow (10 bits per second) and reducing the size proved to be problematic, as reducing the size of the laser point increased the noise in the data.
Until Nagarkar and others. I decided to study molecules that can be distinguished visually rather than by molecular weight. Specifically, they chose seven commercially available fluorescent dyes in different colors. To “jot down” the information, the team used an inkjet printer to deposit solutions of mixed fluorescent dyes on an epoxy substrate containing certain reactive amino groups. The subsequent reaction forms stable amide bonds, effectively locking the information in place.
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