{
  "abstract": "The evaporation of a spherical droplet having a pure solvent or a mixture of isotopic forms is fundamental to atmospheric physics, and critical for studying interfacial fluid dynamics, and hydrogen-bond kinetics. Understanding the hydrogen/deuterium bonded structural dynamics at molecular level during evaporation of isotopic water mixture (H2O/D2O) is important for understanding non-equilibrium phase transitions. In this work, we investigated real-time evaporation kinetics of spherical water droplets on superhydrophobic surface by time - dependent Raman spectroscopic method. Specifically, the results give an account for the variation of each H - or D-bonded clusters (ranging from fully tetrahedral ice-like structure to free water molecule) with time in the mixture from the time - dependent intensity change of each distinct vibrational stretching band of O-H or O-D. For pure H2O, the O-H peak intensities for all the clusters were decreasing with time, whereas for pure D2O, the ice-like structures vanished quickly with simultaneous increase in the free D2O molecules. In the mixture of H2O-D2O, based on Raman signal of each species, our experimental measurements suggested that the species having O-D or D2O was evaporating faster in comparison to the species having O-H or H2O. The results were also supported by the molecular dynamics simulation, which revealed that the bulk D2O was moving to the surface, and evaporating faster than H2O molecules.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Chemistry",
    "Indian Institute of Technology Guwahati",
    "Centre for Nanotechnology"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Sujay Paul"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Dinesh Sharma",
      "orcid": "0009-0009-4794-3763"
    },
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "Arun Chattopadhyay"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/f5cjmgbnnxv05.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15009987/v1",
  "fulltext_url": null,
  "id": "f5cjmgbnnxv05",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009987/v1",
  "language": null,
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3107|Spectroscopy and Quantum Chemical Studies"
    ]
  ],
  "openalex": "W7220711941",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15009987/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-06",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/f5cjmgbnnxv05.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:22Z",
      "native_id": "10.26434/chemrxiv.15009987",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009987/v1"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3107|Spectroscopy and Quantum Chemical Studies",
      "subfield": "amo"
    }
  ],
  "title": "Raman Spectroscopy Reveals Isotope-specific Hydrogen Bond Kinetics in a Spherical Droplet leading to Preferential Evaporation of D2O in H2O-D2O Mixture",
  "title_text": "Raman Spectroscopy Reveals Isotope-specific Hydrogen Bond Kinetics in a Spherical Droplet leading to Preferential Evaporation of D2O in H2O-D2O Mixture",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:22Z",
  "url": "https://research.draconitic.com/paper/f5cjmgbnnxv05",
  "venue": "ChemRxiv",
  "versions": []
}