Patent ID: 6545671
Filing Date: 2003-04-08
Classification: G06F

Abstract:
A system comprisingrotating element sheet material with reversible highlighting; and a highlighting implement; wherein said rotating element sheet material with reversible highlighting comprises: a conducting layer; and a plurality of first rotatable elements and a plurality of second rotatable elements disposed in a substrate and in contact with an enabling fluid; wherein said substrate is adjacent to said conducting layer; wherein each said first rotatable element in said plurality has: a first collection of responses to incident electromagnetic radiation of interest, where a first response in said first collection of responses renders said first rotatable element transparent-clear to said incident electromagnetic energy of interest, and wherein a second response in said first collection of responses renders said first rotatable element opaque to said incident electromagnetic energy of interest; and a first work function; and wherein each said second rotatable element in said plurality has: a second collection of responses to incident electromagnetic radiation of interest, where a first response in said second collection renders said second rotatable element transparent-clear to said incident electromagnetic energy of interest, and a second response in said second collection renders said second rotatable element transparent-colored to said incident electromagnetic energy of interest; and a second work function; and wherein said second work function is less than said first work function; and wherein said highlighting implement and said conducting layer are configured to introduce a first vector field in a first direction in said substrate where said first vector field has a magnitude greater than said second work function and less than said first work function.