摘要:
A technique for forming nanostructures including introducing a plurality of molecular-size scale and/or nanoscale building blocks to a region near a substrate and simultaneously scanning a pattern on the substrate with an energy beam, wherein the energy beam causes a change in at least one physical property of at least a portion of the building blocks, such that a probability of the portion of the building blocks adhering to the pattern scanned by the energy beam is increased, and wherein the building blocks adhere to the pattern to form the structure. The energy beam and at least a portion of the building blocks may interact by electrostatic interaction to form the structure.
摘要:
A platform for context-aware experimentation includes a housing for one or more sensors for obtaining data pertaining to an on-going experiment, a communications subsystem for transmitting data obtained by the sensors, and a microcontroller for receiving data from the sensors, providing it to the communications subsystem, and possibly controlling the sensors. The housing may be a tube, which may be configured to hold a sample and may have a cap, or a waterproof package, which may have an opening to admit at least part of a sample. The platform may include a power source. The platform may include a computer processor, located outside the housing, for analyzing the data obtained by the sensors, determining the experimental context in which the sensors are operating and/or which experimental step in a protocol is being performed, and/or reminding users of required parameters for the steps in the protocol.
摘要:
A technique for forming nanostructures including introducing a plurality of molecular-size scale and/or nanoscale building blocks to a region near a substrate and simultaneously scanning a pattern on the substrate with an energy beam, wherein the energy beam causes a change in at least one physical property of at least a portion of the building blocks, such that a probability of the portion of the building blocks adhering to the pattern scanned by the energy beam is increased, and wherein the building blocks adhere to the pattern to form the structure. The energy beam and at least a portion of the building blocks may interact by electrostatic interaction to form the structure.
摘要:
Fabrication and arrangement of nanoparticles into one-dimensional linear chains is achieved by successive chemical reactions, each reaction adding one or more nanoparticles by building onto exposed, unprotected linker functionalities. Optionally, protecting groups may be used to control and organize growth. Nanoparticle spheres are functionalized in a controlled manner in order to enable covalent linkages. Functionalization of nanoparticles is accomplished by either ligand exchange or chemical modification of the terminal functional groups of the capping ligand. Nanoparticle chains are obtained by a variety of connectivity modes such as direct coupling, use of linker molecules, and use of linear polymeric templates. In particular, a versatile building block system is obtained through controlled monofunctionalization of nanoparticles.
摘要:
A method for synthesizing a nucleic acid having a desired sequence and length comprises providing a solid support having an immobilized nucleic acid, performing a nucleic acid addition reaction to elongate the immobilized nucleic acid by adding a nucleotide or an oligonucleotide to the nucleic acid, determining whether the nucleotide or the oligonucleotide is added to the nucleic acid by detecting whether there is an increase in electrophoretic force applied to the solid support when an electric field and a magnetic field gradient are applied to the support, wherein the increase in electrophoretic force applied to the support is caused by adding the nucleotide or the oligonucleotide to the nucleic acid, repeating the addition reaction and determination steps if the nucleotide or the oligonucleotide is not added to the nucleic acid, and continuing until the immobilized nucleic acid has a desired sequence and length.
摘要:
Novel addressing schemes for controlling electronically addressable displays include a scheme for rear-addressing displays, which allows for in-plane switching of the display material. Other schemes include a rear-addressing scheme which uses a retroreflecting surface to enable greater viewing angle and contrast. Another scheme includes an electrode structure that facilitates manufacture and control of a color display. Another electrode structure facilitates addressing a display using an electrostatic stylus. Methods of using the disclosed electrode structures are also disclosed. Another scheme includes devices combining display materials with silicon transistor addressing structures.
摘要:
In a method for synthesizing a long nucleic acid molecule, a first immobilized nucleic acid has a first 5′ region and a first 3′ region and a second immobilized nucleic acid has a second 5′ region and a second 3′ region. The second 3′ region and the first 5′ region have identical nucleic acid sequences. An oligonucleotide is hybridized to the first 3′ region, extending the hybridized oligonucleotide and producing a first extension product having a 3′ region that is complementary to the first 5′ region. The 3′ region of the first extension product is hybridized to the second 3′ region, extending the 3′ region of the first extension product and producing a synthesized nucleic acid molecule having a 3′ region that is complementary to the second 5′ region, wherein the synthesized nucleic acid molecule has a sequence complementary to the first and second 3′ and 5′ regions.
摘要:
A dielectrophoretic display has a substrate having walls defining a cavity, the cavity having a viewing surface and a side wall inclined to the viewing surface. A fluid is contained within the cavity; and a plurality of particles are present in the fluid. There is applied to the substrate an electric field effective to cause dielectrophoretic movement of the particles so that the particles occupy only a minor proportion of the viewing surface.
摘要:
A dielectrophoretic display has a substrate having walls defining a cavity, the cavity having a viewing surface and a side wall inclined to the viewing surface. A fluid is contained within the cavity; and a plurality of particles are present in the fluid. There is applied to the substrate an electric field effective to cause dielectrophoretic movement of the particles so that the particles occupy only a minor proportion of the viewing surface.
摘要:
A dielectrophoretic display comprises a substrate having walls defining at least one cavity, the cavity having a viewing surface and a side wall inclined to the viewing surface; a suspending fluid contained within the cavity; a plurality of at least one type of particle suspended within the suspending fluid; and means for applying to the fluid an electric field effect effective to cause dielectrophoretic movement of the particles to the side wall of the cavity.