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Title: Particle analogs of electrons in colloidal crystals

Abstract

A versatile method for the design of colloidal crystals involves the use of DNA as a particle-directing ligand. With such systems, DNA-nanoparticle conjugates are considered programmable atom equivalents (PAEs), and design rules have been devised to engineer crystallization outcomes. This work shows that when reduced in size and DNA grafting density, PAEs behave as electron equivalents (EEs), roaming through and stabilizing the lattices defined by larger PAEs, as electrons do in metals in the classical picture. This discovery defines a new property of colloidal crystals—metallicity—that is characterized by the extent of EE delocalization and diffusion. As the number of strands increases or the temperature decreases, the EEs localize, which is structurally reminiscent of a metal-insulator transition. Colloidal crystal metallicity, therefore, provides new routes to metallic, intermetallic, and compound phases.

Authors:
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Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1528673
Grant/Contract Number:  
SC0000989; AC02-06CH11357
Resource Type:
Published Article
Journal Name:
Science
Additional Journal Information:
Journal Name: Science Journal Volume: 364 Journal Issue: 6446; Journal ID: ISSN 0036-8075
Publisher:
American Association for the Advancement of Science (AAAS)
Country of Publication:
United States
Language:
English

Citation Formats

Girard, Martin, Wang, Shunzhi, Du, Jingshan S., Das, Anindita, Huang, Ziyin, Dravid, Vinayak P., Lee, Byeongdu, Mirkin, Chad A., and Olvera de la Cruz, Monica. Particle analogs of electrons in colloidal crystals. United States: N. p., 2019. Web. doi:10.1126/science.aaw8237.
Girard, Martin, Wang, Shunzhi, Du, Jingshan S., Das, Anindita, Huang, Ziyin, Dravid, Vinayak P., Lee, Byeongdu, Mirkin, Chad A., & Olvera de la Cruz, Monica. Particle analogs of electrons in colloidal crystals. United States. doi:10.1126/science.aaw8237.
Girard, Martin, Wang, Shunzhi, Du, Jingshan S., Das, Anindita, Huang, Ziyin, Dravid, Vinayak P., Lee, Byeongdu, Mirkin, Chad A., and Olvera de la Cruz, Monica. Thu . "Particle analogs of electrons in colloidal crystals". United States. doi:10.1126/science.aaw8237.
@article{osti_1528673,
title = {Particle analogs of electrons in colloidal crystals},
author = {Girard, Martin and Wang, Shunzhi and Du, Jingshan S. and Das, Anindita and Huang, Ziyin and Dravid, Vinayak P. and Lee, Byeongdu and Mirkin, Chad A. and Olvera de la Cruz, Monica},
abstractNote = {A versatile method for the design of colloidal crystals involves the use of DNA as a particle-directing ligand. With such systems, DNA-nanoparticle conjugates are considered programmable atom equivalents (PAEs), and design rules have been devised to engineer crystallization outcomes. This work shows that when reduced in size and DNA grafting density, PAEs behave as electron equivalents (EEs), roaming through and stabilizing the lattices defined by larger PAEs, as electrons do in metals in the classical picture. This discovery defines a new property of colloidal crystals—metallicity—that is characterized by the extent of EE delocalization and diffusion. As the number of strands increases or the temperature decreases, the EEs localize, which is structurally reminiscent of a metal-insulator transition. Colloidal crystal metallicity, therefore, provides new routes to metallic, intermetallic, and compound phases.},
doi = {10.1126/science.aaw8237},
journal = {Science},
number = 6446,
volume = 364,
place = {United States},
year = {2019},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1126/science.aaw8237

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