Analytical & Research

Research systems frequently change media, ranges and experimental paths, so transparent configuration, traceable data and clear operating boundaries matter more than any single parameter.

Selection should reserve room for experimental expansion while defining the applicable boundaries of sensing principles, control methods and data interfaces.

Physical vapor deposition (PVD) vaporizes film material into atoms, molecules, or ions in vacuum and deposits it on substrates — widely used for tooling, molds, optics, and decorative coatings. Magnetron sputtering is the most common PVD method: in high vacuum, argon is introduced and ionized by a voltage to strike the target; a magnetic field confines electrons near the target, raising plasma density and sputtering efficiency.

Process gas flow determines film composition and quality. Argon is the inert working gas that establishes the discharge environment; reactive sputtering blends nitrogen, oxygen, acetylene, or methane with argon to form compound films — e.g., TiN deposition uses nitrogen, AlN uses an aluminum target plus nitrogen. Because reactive-gas partial pressure depends on the ratio of each gas flow to total pressure, precise mass-flow control of every channel is the prerequisite for a stable film stoichiometry.

Vacuum quality strongly affects film properties. Background vacuum is typically 10⁻³–10⁻⁴ Pa to limit contamination, while working pressure sits around 10⁰–10⁻¹ Pa. During coating, gas inflow is continuous and PID control modulates pump speed to hold pressure while flow control keeps the plasma stable across the ignition–transition–sputtering phases.

Flow accuracy shows up directly as consistent film color and adhesion: small ratio deviations in argon/nitrogen/acetylene cause color drift and adhesion variation. MFCs provide high accuracy, fast response, and a wide pressure range, making them the common choice for automated gas blending in coating tools.

HNR supplies flow control, pressure regulation, and residual gas monitoring for vacuum coating systems, helping teams stabilize process repeatability and shorten recipe tuning.