Abstract:
An apparatus for the controlled deposition of particles onto a film or a substrate, including: a frame arranged to support a film or a substrate having first and second surfaces facing in first and second opposite directions, respectively; a nozzle arranged to emit a stream of particles charged with a first polarity toward the first surface; and an electrode: charged with a second polarity, opposite the first polarity, and located adjacent the second surface; and arranged to attract the stream of particles to a region of the first surface. A line orthogonal to the first surface passes through the region and the electrode.
Abstract:
In certain embodiments, a method for validating the human visual inspection process or an optical analysis instrument for use with biological particles may include inspecting a standard particle solution using the optical analysis instrument. The standard particle solution may include a known concentration of standard particles suspended in solution with the standard particles having a defined size and shape distribution. The standard particles may have a refractive index that is substantially similar to a refractive index of the biological particles. The method may include assessing a concentration of standard particles in the standard particle solution from the inspection. The method may include assessing a difference between the assessed concentration of standard particles and the known concentration of standard particles. The method may include modifying one or more parameters of the optical analysis instrument based on the assessed difference between the concentrations. The method may include assessing a detection efficiency of the optical analysis instrument.
Abstract:
In certain embodiments, a method for validating the human visual inspection process or an optical analysis instrument for use with biological particles may include inspecting a standard particle solution using the optical analysis instrument. The standard particle solution may include a known concentration of standard particles suspended in solution with the standard particles having a defined size and shape distribution. The standard particles may have a refractive index that is substantially similar to a refractive index of the biological particles. The method may include assessing a concentration of standard particles in the standard particle solution from the inspection. The method may include assessing a difference between the assessed concentration of standard particles and the known concentration of standard particles. The method may include modifying one or more parameters of the optical analysis instrument based on the assessed difference between the concentrations. The method may include assessing a detection efficiency of the optical analysis instrument.