The disclosed embodiments provide a system that forms a three-dimensional (3D) nanostructure through 3D printing. During operation, the system performs a 3D printing operation that uses multiple passes of a scanning probe microscope (SPM) tip to deliver an ink to form the 3D nanostructure, wherein the ink includes both a positively charged polyelectrolyte (PE) and a negatively charged PE. While delivering the ink, the SPM tip is loaded with the ink and moved to a target location to deposit the ink. Finally, after the multiple passes are complete, the system cures the 3D nanostructure to remove excess positive or negative charges from the 3D nanostructure.

Provided is a composite metal-wide-bandgap semiconductor tip for scanning tunneling microscopy and/or scanning tunneling lithography, a method of forming, and a method for using the composite metal-wide-bandgap semiconductor tip.

Embodiments of the present invention relate to a device comprising a platform comprising a layer of a 2-dimensional material. The device further comprises a plurality of electrodes and one or more molecules arranged on the platform. The device is configured to apply control signals to the plurality of electrodes to position the molecules by means of an electric field. Embodiments of the invention further concern a corresponding method for fabricating such a device and a method for positioning molecules by such a device.

Embodiments of the present invention relate to a device comprising a platform comprising a layer of a 2-dimensional material. The device further comprises a plurality of electrodes and one or more molecules arranged on the platform. The device is configured to apply control signals to the plurality of electrodes to position the molecules by means of an electric field. Embodiments of the invention further concern a corresponding method for fabricating such a device and a method for positioning molecules by such a device.

Systems and methods for mechanosynthesis including those that avoid the need for a bootstrap process, avoid the need to build tips via mechanosynthesis, avoid the need for charging tips with feedstock during a build sequence, avoid the need to dispose of reaction byproducts, reduce the design complexity of new tips, and reduce or avoid the need for multiple positional means or tip switching.

Methods, systems, and devices are described which facilitate mechanosynthesis through the sequential use of a plurality of tips, each of which may have a different affinity for feedstock, thereby allowing tip to tip transfers which enhance system versatility and reduce equipment complexity.

The present invention relates to a gas sensor and a manufacturing method thereof. A sensor body of the gas sensor is formed by cutting a multi-layered ceramic/metal platform where a plurality of sequential layer structures of a ceramic dielectric material and metal are layered in a layering direction. The sensor body includes at least one layered body wherein a ceramic dielectric material, a first internal electrode, a ceramic dielectric material, and a second internal electrode are sequentially layered. The first internal electrode and the second internal electrode are exposed through a cut surface by cutting. The first internal electrode is electrically connected to a first electrode terminal disposed on a first side of the sensor body, and the second internal electrode is electrically connected to a second electrode terminal disposed on a second side of the sensor body facing the first side. The first and the second internal electrode are exposed to form a sensing surface on at least one side of the sensor body excluding a side where the first and the second electrode terminal are installed. A gas sensing material layer for gas detection is formed on a portion or an entire upper portion of the sensing surface, or a metal film whose contact resistance with the gas sensing material layer is lower than the first and the second internal electrode is formed on upper portions of the first and the second internal electrode which are exposed and a gas sensing material layer for gas detection is formed on a portion or an entire upper portion of the sensing surface where the metal film is formed.

A device for transporting a strip-type substrate through a reactor includes transport elements for holding the substrate. The transport elements are displaceable by a drive unit in a transport direction. The transport elements have first transport beams and second transport beams that engage in alternation on the substrate, in which the transport beams that engage the substrate move in the transport direction and the transport beams that do not engage the substrate move in a reverse direction opposite to the transport direction. The device further includes transport carriages that are arranged in pairs in the transport direction respectively upstream and downstream of the reactor.

Methods, systems, and devices are described which facilitate mechanosynthesis through the sequential use of a plurality of tips, each of which may have a different affinity for feedstock, thereby allowing tip to tip transfers which enhance system versatility and reduce equipment complexity.

In one embodiment, a 3D printing system includes: a stage on which a substrate is disposed; first and second syringe pumps; first and second syringes; a hydrodynamic flow focusing nozzle having a central channel coupled to the first syringe to receive a printing ink and two side channels on two sides of the central channel and coupled to the second syringe to receive a sheath fluid to pinch the central channel; and a pulse generator to apply an electric potential between the hydrodynamic flow focusing nozzle and the substrate to deposit the printing ink on the substrate on-demand and control ejection frequency of the printing ink. The first syringe pump is controllable to adjust a printing ink flow rate of the printing ink to deposit the printing ink onto the substrate. The second syringe pump is controllable to adjust a sheath fluid flow rate of the sheath fluid.