title: Mechanical Properties of a Series of Macro- and Nanodimensional Organic Cocrystals Correlate with Atomic Polarizability.
abstract: A correlation between Young's modulus, as determined by using nanoindentation atomic force microscopy (AFM), and atomic polarizability is observed for members of a series of cocrystals based on systematic changes to one cocrystal component. Time domain spectroscopy over terahertz frequencies (THz-TDS) is used for the first time to directly measure the polarizability of macro- and nanosized organic solids. Cocrystals of both macro- and nanodimensions with highly polarizable atoms result in softer solids and correspondingly higher polarizabilities.
authors.affiliation: Department of Chemistry, University of Iowa , Iowa City, Iowa 52242-1294, United States.
authors.forename: Thilini P
authors.initials: TP
authors.lastname: Rupasinghe
authors.affiliation: Department of Chemistry, University of Iowa , Iowa City, Iowa 52242-1294, United States.
authors.forename: Kristin M
authors.initials: KM
authors.lastname: Hutchins
authors.affiliation: Department of Chemistry, University of Iowa , Iowa City, Iowa 52242-1294, United States.
authors.forename: Bimali S
authors.initials: BS
authors.lastname: Bandaranayake
authors.affiliation: Department of Chemistry, University of Iowa , Iowa City, Iowa 52242-1294, United States.
authors.forename: Suman
authors.initials: S
authors.lastname: Ghorai
authors.affiliation: Department of Chemistry, University of Iowa , Iowa City, Iowa 52242-1294, United States.
authors.forename: Chandana
authors.initials: C
authors.lastname: Karunatilake
authors.affiliation: Department of Chemistry, University of Iowa , Iowa City, Iowa 52242-1294, United States.
authors.forename: Dejan-Krešimir
authors.initials: DK
authors.lastname: Bučar
authors.affiliation: Department of Chemistry, University of Iowa , Iowa City, Iowa 52242-1294, United States.
authors.forename: Dale C
authors.initials: DC
authors.lastname: Swenson
authors.affiliation: Department of Chemistry, University of Iowa , Iowa City, Iowa 52242-1294, United States.
authors.forename: Mark A
authors.initials: MA
authors.lastname: Arnold
authors.affiliation: Department of Chemistry, University of Iowa , Iowa City, Iowa 52242-1294, United States.
authors.forename: Leonard R
authors.initials: LR
authors.lastname: MacGillivray
authors.affiliation: Department of Chemistry, University of Iowa , Iowa City, Iowa 52242-1294, United States.
authors.forename: Alexei V
authors.initials: AV
authors.lastname: Tivanski