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Chemistry
Italy
2025

D-Index & Metrics

Materials Science

D-Index
85
Citations
26879
World Ranking
2155
National Ranking
17

Chemistry

D-Index
86
Citations
27223
World Ranking
2525
National Ranking
39

Research.com Recognitions

  • 2025 - Research.com Chemistry in Italy Leader Award
  • 2022 - Research.com Chemistry in Italy Leader Award

Overview

K. L. Ngai is a researcher affiliated with the University of Pisa in Italy, specializing in Materials Science. The scientist's work spans multiple subfields including Materials Chemistry, Fluid Flow and Transfer Processes, Ceramics and Composites, Polymers and Plastics, and Physical and Theoretical Chemistry.

The core of K. L. Ngai's research focuses on the dynamics and properties of materials, with key topics including:

  • Material Dynamics and Properties
  • Glass Properties and Applications
  • Thermodynamic Properties of Mixtures
  • Ionic Liquids Properties and Applications
  • Polymer Nanocomposites and Properties
  • Photochemistry and Electron Transfer Studies
  • Metallic Glasses and Amorphous Alloys

K. L. Ngai has contributed to a number of scientific papers, among which the following are notable by their recent publication dates and venues:

  • "Universal properties of relaxation and diffusion in complex materials: Originating from fundamental physics with rich applications" (2023) in Progress in Materials Science
  • "Clarifying the nature of the Johari-Goldstein β-relaxation and emphasising its fundamental importance" (2020) in The Philosophical Magazine A Journal of Theoretical Experimental and Applied Physics
  • "Relating the dynamics of hydrated poly(vinyl pyrrolidone) to the dynamics of highly asymmetric mixtures and polymer blends" (2021) in Journal of Molecular Liquids

Frequently publishing in respected journals, K. L. Ngai has been featured multiple times in venues such as Macromolecules, Physical Review E, Journal of Molecular Liquids, Physical Chemistry Chemical Physics, and Physical Review B. These publications reflect the scientist's interdisciplinary approach bridging chemistry and materials science.

Collaboration has been a significant aspect of this scientist's research output. Frequent co-authors include:

  • Marian Paluch
  • S. Capaccioli
  • Shidong Feng
  • Li-Min Wang
  • Xiaoqian Lu

This collaborative network underlines a multi-institutional and cross-disciplinary engagement in advanced materials research.

Best Publications

  • Physical Properties of Polymers

    James Mark;Kia Ngai;William Graessley;Leo Mandelkern

  • Classification of secondary relaxation in glass-formers based on dynamic properties.

    K. L. Ngai;M. Paluch

  • Correlation of polymer segmental chain dynamics with temperature-dependent time-scale shifts

    Donald J. Plazek;Kia L. Ngai

  • Dynamic and thermodynamic properties of glass-forming substances

    K.L. Ngai

  • Identification of Different Modes of Molecular Motion in Polymers That Cause Thermorheological Complexity

    K. L. Ngai;D. J. Plazek

  • Chemical structure and intermolecular cooperativity: dielectric relaxation results

    K. L. Ngai;C. M. Roland

  • Three Coupled Relations for Relaxations in Complex Systemsa

    K. L. Ngai;R. W. Rendell;A. K. Rajagopal;S. Teitler

  • Relation between the activation energy of the Johari-Goldstein β relaxation and T g of glass formers

    K. L. Ngai;S. Capaccioli

  • Surface polaritons in a circularly cylindrical interface: Surface plasmons

    C. A. Pfeiffer;E. N. Economou;K. L. Ngai

  • Similarity of relaxation in supercooled liquids and interacting arrays of oscillators.

    K. L. Ngai;Kwok Yeung Tsang;Kwok Yeung Tsang

  • Nature and properties of the Johari–Goldstein β-relaxation in the equilibrium liquid state of a class of glass-formers

    K. L. Ngai;P. Lunkenheimer;C. León;U. Schneider

  • Slowing down of relaxation in a complex system by constraint dynamics

    K. L. Ngai;A. K. Rajagopal;S. Teitler

  • Frequency dependence of dielectric loss in condensed matter

    K. L. Ngai;C. T. White

  • Origin of constant loss in ionic conductors.

    León C;Rivera A;Várez A;Sanz J

  • Comments on the electric modulus function

    I.M. Hodge;K.L. Ngai;C.T. Moynihan

  • Observation of the Component Dynamics in a Miscible Polymer Blend by Dielectric and Mechanical Spectroscopies

    A. Alegria;J. Colmenero;K. L. Ngai;C. M. Roland

  • Do theories of the glass transition, in which the structural relaxation time does not define the dispersion of the structural relaxation, need revision?

    K L Ngai;R Casalini;S Capaccioli;M Paluch

  • Viscoelastic properties of polymers. 4. Thermorheological complexity of the softening dispersion in polyisobutylene

    D. J. Plazek;I.-C. Chay;K. L. Ngai;C. M. Roland

  • Correlation between the activation enthalpy and Kohlrausch exponent for ionic conductivity in oxide glasses.

    Kia L. Ngai;Steve W. Martin

  • Anomalous isotope-mass effect in lithium borate glasses: Comparison with a unified relaxation model

    K. L. Ngai;R. W. Rendell;H. Jain

  • Dynamical heterogeneity in a miscible polymer blend

    C. M. Roland;K. L. Ngai

Frequent Co-Authors

C. M. Roland
C. M. Roland United States Naval Research Laboratory
Marian Paluch
Marian Paluch University of Silesia
Himanshu Jain
Himanshu Jain Lehigh University
Edward T. Samulski
Edward T. Samulski University of North Carolina at Chapel Hill
James E. Mark
James E. Mark University of Cincinnati
William W. Graessley
William W. Graessley Princeton University
Leo Mandelkern
Leo Mandelkern Florida State University
Jack L. Koenig
Jack L. Koenig Case Western Reserve University
George Fytas
George Fytas Max Planck Society
George D. Wignall
George D. Wignall Oak Ridge National Laboratory

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