Abstract:
A process for deposition of high purity metal or metal oxide nano layers comprising: directing a precursor fluid toward a substrate surface, and irradiating the substrate surface with a focused ion beam in the presence of the precursor fluid, the precursor fluid dissociating in the presence of the particle beam to deposit a metal or metal oxide on the substrate surface, characterized in that the focused ion beam comprises hydrogen or oxygen ions, and shaped nano layers of high purity metal obtainable by said process.
Abstract:
An improved method of beam deposition to deposit a low-resistivity metal. Preferred embodiments of the present invention use a novel focused ion beam induced deposition precursor to deposit low-resistivity metallic material such as tin. Applicants have discovered that by using a methylated or ethylated metal such as hexamethylditin as a precursor, material can be deposited having a resistivity as low as 40 µΩ·cm.
Abstract:
A method and apparatus for selective etching a substrate using a focused beam. For example, multiple gases may be used that are involved in competing beam-induced and spontaneous reactions, with the result depending on the materials on the substrate. The gases may include, for example, an etchant gas and an auxiliary gas that inhibits etching.
Abstract:
Deposition of debris produced in laser ablation of a workpiece situated in a vacuum chamber is reduced by introduction a background gas into the vacuum chamber prior to or during laser ablation. The background gas can be introduced diffusely into the vacuum chamber and can reduce contamination of surfaces such as a surface of an optical window that faces the workpiece during processing. Directed introduction of a background gas can be used as well and in some cases the same or a different background gas is directed to a workpiece surface at the same or different pressure than that associated with diffuse introduction of the background gas to reduce contamination of the workpiece surface with laser ablation debris.
Abstract:
A method and apparatus for directing light or gas or both to a specimen positioned within about 2 mm from the lower end of a charged particle beam column. The charged particle beam column assembly includes a platform defining a specimen holding position and has a set of electrostatic lenses each including a set of electrodes. The assembly includes a final electrostatic lens that includes a final electrode that is closest to the specimen holding position. This final electrode defines at least one internal passageway having a terminus that is proximal to and directed toward the specimen holding position.
Abstract:
A method is provided for preparing a sample for correlative optical and electron imaging and correcting aberrations in the imaging process due to sample deformation. Dye-coated fiducial markers are distributed throughout the sample volume. The fiducial markers are preferably in the form of polystyrene nanospheres that are functionalized on their surface and subsequently treated with a fluorescent dye. The dye does not penetrate the sphere but only binds to the surface. By limiting the dye to the surface of the nanospheres, the shape of the spheres can be determined in iPALM and in charged particle images aiding in tracking of physical changes that may occur to the sample volume.
Abstract:
A charge transfer mechanism is used to locally deposit or remove material for a small structure. A local electrochemical cell is created without having to immerse the entire work piece in a bath. The charge transfer mechanism can be used together with a charged particle beam or laser system to modify small structures, such as integrated circuits or micro-electromechanical system. The charge transfer process can be performed in air or, in some embodiments, in a vacuum chamber.