Abstract: A system for bulk separation of single-walled tubular fullerenes (100) based on chirality is provided wherein an array of longitudinally directed channels (32) are formed on a crystalline substrate (30) to form a separation plate (300). At least one of the separation plate (300) and a solution or suspension of the single-walled tubular fullerenes (100) is displaced relative to the other for exposing at least a portion of the plurality of single-walled tubular fullerenes (100) to the channels (32). Each of the channels (32) exposes portions of the upper surface (38) of the crystalline substrate (30) and the longitudinal direction is selected to be an energetically favored “locking angle” for single-walled tubular fullerenes (100a) of one chiral angle to be adsorbed to the exposed is substrate surface (38). The adsorbed single-walled tubular fullerenes (100a) are subsequently removed from the separation plate (300).

Abstract: A method for bulk separation of single-walled tubular fullerenes (100) based on chirality is provided wherein an array of longitudinally directed channels (32) are formed on a crystalline substrate (30) to form a separation plate (300). At least one of the separation plate (300) and a solution or suspension of the single-walled tubular fullerenes (100) is displaced relative to the other for so exposing at least a portion of the plurality of single-walled tubular fullerenes (100) to the channels (32). Each of the channels (32) exposes portions of the upper surface (38) of the crystalline substrate (30) and the longitudinal direction is selected to be an energetically favored “locking angle” for single-walled tubular fullerenes (100a) of one chiral angle to be adsorbed to the exposed substrate surface (38). The adsorbed angle-walled tubular fullerenes (100a) are subsequently removed from the separation plate (300).

Abstract: A method for bulk separation of single-walled tubular fullerenes (100) based on helicity is provided wherein a solution or suspension of the single-walled tubular fullerenes (100) is flowed onto a crystalline or highly oriented substrate (30). The single-walled tubular fullerenes (100) that flow onto the substrate (30) have a respective longitudinal axis that is aligned with the flow direction (105). The direction of flow (105) is oriented at a predetermined angle with respect to a lattice axis (24) of the substrate (30) for energetically favoring adsorption of a respective plurality of single-walled fullerenes (100) having a tubular contour and a selected helicity. Subsequently, the adsorbed single-walled tubular fullerenes (100) of the selected chirality are removed from the substrate (30).

Abstract: A method for bulk separation of single-walled tubular fullerenes (100) based on chirality is provided wherein a first step is the formation of a template (40) on a crystalline substrate (30). The template (40) has a plurality of openings (32) which are oriented to energetically favor adsorption of a respective plurality of single-walled fullerenes (100) having a tubular contour and a selected chirality. Next, the template (40) is exposed to a suspension (16) of single-walled tubular fullerenes (100) of random chiralities for adsorption of single-walled tubular fullerenes (100) of the selected chirality into the openings (32) of template (40). Then, the template (40) is removed from exposure to the suspension (16) and the adsorbed single-walled tubular fullerenes (100) of the selected chirality are removed from the template (40). The template (40) may then be reused to adsorb further tubular fullerenes (100) of the selected chirality from a suspension (16) of tubular fullerenes (100) of random chiralities.

Abstract: A method for bulk separation of single-walled tubular fullerenes (100) based on chirality is provided wherein a first step is the formation of a template (40) on a crystalline substrate (30). The template (40) has a plurality of openings (32) which are oriented to energetically favor adsorption of a respective plurality of single-walled fullerenes (100) having a tubular contour and a selected chirality. Next, the template (40) is exposed to a suspension (16) of single-walled tubular fullerenes (100) of random chiralities for adsorption of single-walled tubular fullerenes (100) of the selected chirality into the openings (32) of template (40). Then, the template (40) is removed from exposure to the suspension (16) and the adsorbed single-walled tubular fullerenes (100) of the selected chirality are removed from the template (40). The template (40) may then be reused to adsorb further tubular fullerenes (100) of the selected chirality from a suspension (16) of tubular fullerenes (100) of random chiralities.

Abstract: A monomolecular rectifying wire is provided that includes a molecular conducting wire that has been modified to embed a rectifying diode integrally therein. The modified conducting wire includes an electron donating section, an electron accepting section, and an insulating group separating the electron donating and accepting sections. Monomolecular logical gates and more complex logic structures that operate by the conduction of electrical currents are constructed by combinations of molecular rectifying wires, molecular conducting wires, and molecular resistive wires to form a single molecule that electrically exhibits a desired Boolean logic function.

Abstract: A monomolecular electronic device is provided that includes a molecular diode having at least one barrier insulating group chemically bonded between a pair of molecular ring structures to form a pair of diode sections, at least one dopant group chemically bonded to one of the pair of diode sections, and a molecular gate structure chemically bonded to the one diode section for influencing an intrinsic bias formed by the at least one dopant group. The device thus produced operates as a molecular electronic transistor, exhibiting both switching and power gain. By adding yet another insulating group to the other of the diode sections, an electrical resistance is formed to define an output which represents an inverter or NOT gate function. The NOT gate can be chemically bonded to molecular diode-diode logic structures to form a single molecule that exhibits complex Boolean functions and power gain.