Phase behavior and critical activated dynamics of limited-valence DNA nanostars
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- Silvia Biffi
- Department of Medical Biotechnology and Translational Medicine, Universitá degli Studi di Milano, I-20133 Milan, Italy;
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- Roberto Cerbino
- Department of Medical Biotechnology and Translational Medicine, Universitá degli Studi di Milano, I-20133 Milan, Italy;
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- Francesca Bomboi
- Department of Physics, Sapienza, Universitá di Roma, I-00185 Rome, Italy; and
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- Elvezia Maria Paraboschi
- Department of Medical Biotechnology and Translational Medicine, Universitá degli Studi di Milano, I-20133 Milan, Italy;
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- Rosanna Asselta
- Department of Medical Biotechnology and Translational Medicine, Universitá degli Studi di Milano, I-20133 Milan, Italy;
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- Francesco Sciortino
- Department of Physics, Sapienza, Universitá di Roma, I-00185 Rome, Italy; and
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- Tommaso Bellini
- Department of Medical Biotechnology and Translational Medicine, Universitá degli Studi di Milano, I-20133 Milan, Italy;
書誌事項
- 公開日
- 2013-09-09
- DOI
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- 10.1073/pnas.1304632110
- 公開者
- National Academy of Sciences
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説明
<jats:title>Significance</jats:title> <jats:p>At atomic and molecular levels, particles interact via the immutable laws of quantum mechanics, whereas at nanoscopic and microscopic levels, interactions between colloidal particles can be determined by human design. We exploit DNA self-assembly to produce nanoscopic particles with a controlled number of interacting terminations, providing the particles with valence. Experimental investigation of the collective behavior of such colloids shows that reducing the number of interacting sites results in a significant shrinkage of the gas–liquid coexistence region, with critical parameters decreasing as the valence is reduced. We also observe an unconventional dynamic behavior in the proximity of the critical point. Such findings are relevant to answer fundamental physics issues and potentially to determine the stability region of new DNA-based materials.</jats:p>
収録刊行物
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- Proceedings of the National Academy of Sciences
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Proceedings of the National Academy of Sciences 110 (39), 15633-15637, 2013-09-09
National Academy of Sciences
