摘要:
A nano-colonnade structure-and methods of fabrication and interconnection thereof utilize a nanowire column grown nearly vertically from a (111) horizontal surface of a semiconductor layer to another horizontal surface of another layer to connect the layers. The nano-colonnade structure includes a first layer having the (111) horizontal surface; a second layer having the other horizontal surface; an insulator support between the first layer and the second layer that separates the first layer from the second layer. A portion of the second layer overhangs the insulator support, such that the horizontal surface of the overhanging portion is spaced from and faces the (111) horizontal surface of the first layer. The structure further includes a nanowire column extending nearly vertically from the (111) horizontal surface to the facing horizontal surface, such that the nanowire column connects the first layer to the second layer.
摘要:
Methods of making nanometer-scale semiconductor structures with controlled size are disclosed. Semiconductor structures that include one or more nanowires are also disclosed. The nanowires can include a passivation layer or have a hollow tube structure.
摘要:
A sensing method includes exposing a nano-transducer having a controlled surface to a sample including at least one species. Adsorption of the species on the nano-transducer is transduced to a measurable signal as a function of time. Desorption of the species from the nano-transducer is also transduced to a measurable signal as a function of time. A residence time of the at least one species adsorbed on the nano-transducer is extracted from the measurable signals. The adsorption and desorption each define an individual measurable event.
摘要:
A sensing method includes exposing a nano-transducer having a controlled surface to a sample including at least one species. Adsorption of the species on the nano-transducer is transduced to a measurable signal as a function of time. Desorption of the species from the nano-transducer is also transduced to a measurable signal as a function of time. A residence time of the at least one species adsorbed on the nano-transducer is extracted from the measurable signals. The adsorption and desorption each define an individual measurable event.
摘要:
One embodiment of the present invention is an array of nanoscale latches interconnected by a nanowire bus to form a latch array. Each nanoscale latch in the nanoscale-latch array serves as a nanoscale register, and is driven by a nanoscale control line. Primitive operations for the latch array can be defined as sequences of one or more inputs to one or more of the nanowire data bus and nanoscale control lines. In various latch-array embodiments of the present invention, information can be transferred from one nanoscale latch to another nanoscale latch in a controlled fashion, and sequences of information-transfer operations can be devised to implement arbitrary Boolean logic operations and operators, including NOT, AND, OR, XOR, NOR, NAND, and other such Boolean logic operators and operations, as well as input and output functions. Nanoscale-latch arrays can be combined and interconnected in an almost limitless number of different ways to construct arbitrarily complex, sequential, parallel, or both parallel and sequential computing engines that represent additional embodiments of the present invention.
摘要:
A contact lithography apparatus and a method use one or both of spacers and a mesa to facilitate pattern transfer. The apparatus and the method include one or both of a spacer that provides a spaced apart orientation of lithographic elements, such as a patterning tool and a substrate, when in mutual contact with the spacer and a mesa between the patterning tool and the substrate. The mesa supports a contact surface of one or both of the mold and the substrate. One or both of the spacers and the mesa may be non-uniform. One or more of the patterning tool, the substrate and the spacer is deformable, such that deformation thereof facilitates the pattern transfer.
摘要:
A contact lithography apparatus and a method use one or both of spacers and a mesa to facilitate pattern transfer. The apparatus and the method include one or both of a spacer that provides a spaced apart orientation of lithographic elements, such as a patterning tool and a substrate, when in mutual contact with the spacer and a mesa between the patterning tool and the substrate. The mesa supports a contact surface of one or both of the mold and the substrate. One or both of the spacers and the mesa may be non-uniform. One or more of the patterning tool, the substrate and the spacer is deformable, such that deformation thereof facilitates the pattern transfer.
摘要:
An apparatus and related methods for facilitating surface-enhanced Raman spectroscopy (SERS) is described. The apparatus comprises a SERS-active structure near which a plurality of analyte molecules are disposed and an actuation device in actuable communication with the SERS-active structure to deform the SERS-active structure while the analyte molecules are disposed therenear. The deformation of the SERS-active structure varies an intensity of radiation Raman-scattered from the analyte molecules.
摘要:
An apparatus and related methods for facilitating surface-enhanced Raman spectroscopy (SERS) is described. The apparatus comprises a SERS-active structure near which a plurality of analyte molecules are disposed and an actuation device in actuable communication with the SERS-active structure to deform the SERS-active structure while the analyte molecules are disposed therenear. The deformation of the SERS-active structure varies an intensity of radiation Raman-scattered from the analyte molecules.
摘要:
A sensing system includes a nanowire, a passivation layer established on at least a portion of the nanowire, and a barrier layer established on the passivation layer.