title: Complex permittivities of cyclomaltooligosaccharides (cyclodextrins) over microwave frequencies to 26 GHz.
abstract: Complex permittivities (epsilon*) for microwave radiation between 0.5 and 26 GHz have been determined for alpha-, beta-, and gamma-cyclodextrins in the solid state at room temperature. For the real component of epsilon*, maxima occur near 0.6 GHz, and the relation beta > alpha > gamma is evident across the full-frequency spectrum. Dielectric loss is significant only between 5 and 12 GHz for beta- and gamma-cyclodextrins with maxima near 7.5 GHz.
authors.affiliation: UMPQUA Research Company, Myrtle Creek, OR 97457, USA. jatwater@urcmail.net
authors.forename: J E
authors.initials: JE
authors.lastname: Atwater
mesh_terms: D003505:Cyclodextrins / Q000737:chemistry / Q000528:radiation effects*; D008872:Microwaves; D013329:Structure-Activity Relationship; D047391:alpha-Cyclodextrins; D047392:beta-Cyclodextrins; D047408:gamma-Cyclodextrins
chemical_list: D003505:Cyclodextrins; D047391:alpha-Cyclodextrins; D047392:beta-Cyclodextrins; D047408:gamma-Cyclodextrins; C031215:betadex; C023792:gamma-cyclodextrin; C032613:alpha-cyclodextrin