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 method for depositing an object, including:—approaching, in an enclosure, a holder in the direction of a carrier substrate, then—transferring, in the enclosure, the object from the holder to an area for depositing the carrier substrate. The transfer step is preferably carried out when the inside of the enclosure is in a vacuum at a pressure below 10 bar.

Systems and methods of synthesizing nanoparticles on substrates using rapid, high temperature thermal shock. A method involves depositing micro-sized particles or salt precursors on a substrate, and applying a rapid, high temperature thermal shock to the micro-sized particles or the salt precursors to become nanoparticles on the substrate. A system may include a rotatable member that receives a roll of a substrate sheet having micro-sized particles or salt precursors; a motor that rotates the rotatable member so as to unroll the substrate; and a thermal energy source that applies a short, high temperature thermal shock to the substrate. The nanoparticles may be metallic, ceramic, inorganic, semiconductor, or compound nanoparticles. The substrate may be a carbon-based substrate, a conducting substrate, or a non-conducting substrate. The high temperature thermal shock process may be enabled by electrical Joule heating, microwave heating, thermal radiative heating, plasma heating, or laser heating.

A Raman spectroscopy apparatus using a nano printing device is provided to perform Raman spectroscopy on nanoscale nanostructures printed from the nano printing device. The Raman spectroscopy apparatus includes a laser light source configured to generate and emit a laser light to the nanostructures, and a Raman detector configured to collect spectroscopic information from the light scattered by the nanostructures.

Systems and methods for mechanosynthesis are disclosed, 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, which reduce the design complexity of new tips, and/or which reduce or avoid the need for multiple positional means and/or tip switching.

A method and apparatus produce materials by exfoliation from a bulk material, by disposing bulk material in suspension in a liquid in a chamber; applying superimposed ultrasound fields in the chamber, the superimposed ultrasound fields generating cavitation in the liquid at least at a zone of field superimposition; measuring cavitation in the chamber while applying the superimposed cavitation fields, at least at the zone of field superimposition; and adjusting at least one of the ultrasound fields on the basis of measured cavitation so as to control cavitation energy applied to the material and thereby to control exfoliation of the bulk material and the formation of materials therefrom. Inertial cavitation is controlled, resulting in significantly greater production yields compared to prior art systems and methods. A high intensity focused ultrasound transducer is provided to impart suspension energy to the liquid in the chamber for suspending bulk material in the zone of field superimposition.

A particle size reducing method using a ball mill, a vortexer, a Taylor-Couette flow-inducing device (TCFID), a homogenizer, and a dryer. A feedstock with a first particle size is provided to the processing system. In the ball mill, the particle size of the feedstock is reduced to a second particle size. The feedstock is mixed with a carrier fluid to create a working fluid, wherein particles of the feedstock are suspended within the carrier fluid. The particle size is reduced to a third particle size in the vortexer, producing a second reduced working fluid. The third particle size is reduced with the TCFID to a fourth particle size, producing a third reduced working fluid. Using the homogenizer, the distribution of particles in the third reduced working fluid is normalized. In the dryer, the carrier fluid of the working fluid is separated from the particles to produce a granular material.

The present disclosure addresses methods to refine the geometry of micro features manufactured in various substrates. Such refinement includes improvement in edge roughness and roughness of aperture channel walls. The methods include deposition of material onto feature edges and surfaces as well as placement of micro fabricated inserts into coarse features. Foremost among the candidate technologies that can be employed for these purposes are two photon polymerization-based 3D nano printing and atomic force microscope nanopipette-based electroplating.

In the system and method disclosed, an ultrahigh vacuum (UHV) scanning tunneling microscope (STM) tip is used to selectively desorb hydrogen atoms from the Si(100)-2X1:H surface by injecting electrons at a negative sample bias voltage. A new lithography method is disclosed that allows the STM to operate under imaging conditions and simultaneously desorb H atoms as required. A high frequency signal is added to the negative sample bias voltage to deliver the required energy for hydrogen removal. The resulted current at this frequency and its harmonics are filtered to minimize their effect on the operation of the STM's feedback loop. This approach offers a significant potential for controlled and precise removal of hydrogen atoms from a hydrogen-terminated silicon surface and thus may be used for the fabrication of practical silicon-based atomic-scale devices.

Systems and methods for mechanosynthesis are disclosed, 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, which reduce the design complexity of new tips, and/or which reduce or avoid the need for multiple positional means and/or tip switching.