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Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.
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Matrix-assisted laser desorption ionization (MALDI) is a powerful analytical technique used in mass spectrometry. It enables the identification and characterization of various biomolecules, including proteins, peptides, nucleic acids, and carbohydrates. MALDI spectrometry is widely employed in biological and medical research, as well as in fields like pharmacology and biochemistry.
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Mass spectrometry is an analytical technique used to determine the molecular mass and molecular formula of a compound. The basic principle of mass spectrometry is to generate ions from the analyte molecule and measure these ion abundances against their molecular mass.  One common type of ionization, known as electrospray ionization or EI, bombards the analyte molecules in the gas phase with high-energy electron beams. The electron beams displace an electron from the molecule and leave...
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Molecular data storage using direct analysis in real time (DART) ionization mass spectrometry for decoding.

Veronika Pardi-Tóth1,2, Ákos Kuki1, Marcell Árpád Kordován1,2

  • 1Department of Applied Chemistry, Faculty of Science and Technology, University of Debrecen, Egyetem tér 1, Debrecen, 4032, Hungary.

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Molecular data storage uses the presence or absence of molecules to represent bits. Direct analysis in real time mass spectrometry (DART-MS) successfully decodes this information, enabling novel data storage applications.

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Area of Science:

  • Chemistry
  • Materials Science
  • Information Technology

Background:

  • Traditional data storage faces limitations in density and durability.
  • Molecular data storage offers a potential alternative with high information density.
  • Developing practical methods for encoding and decoding molecular information is crucial.

Purpose of the Study:

  • To propose and validate a novel method for molecular data storage using chemical compounds as bits.
  • To demonstrate the use of Direct Analysis in Real Time ionization mass spectrometry (DART-MS) for decoding molecular data.
  • To explore the application of this method in creating scannable chemical codes.

Main Methods:

  • Synthesized nicotinic acid derivatives as 'bit compounds' due to their volatility and ionization properties.
  • Utilized Direct Analysis in Real Time ionization mass spectrometry (DART-MS) for real-time molecular data analysis.
  • Incorporated bit compounds into a polymer matrix for 3D printing and developed decoding software.

Main Results:

  • Successfully stored and retrieved digital information (up to several hundred bits) using molecular presence/absence.
  • Demonstrated proof-of-principle applications, including encoding a QR code and a hidden barcode on a 3D-printed object.
  • Achieved error-free decoding of molecularly stored information via DART-MS analysis.

Conclusions:

  • Direct Analysis in Real Time mass spectrometry is a viable technique for reading digital information stored at the molecular level.
  • This molecular data storage method can function similarly to barcodes or QR codes.
  • The developed technique offers a novel approach for embedding and retrieving digital data in ordinary objects.