SUNJUNE VP-RS8 Benchtop RF Plasma Cleaner

Overview

The SUNJUNE VP-RS8 is a compact, benchtop radio-frequency (RF) plasma cleaner engineered for precision surface modification in research and development laboratories. Operating at the industrial standard frequency of 13.56 MHz, it generates low-temperature, non-thermal plasma within a sealed 8-liter stainless steel vacuum chamber. Unlike thermal or microwave-driven plasma sources, the VP-RS8 utilizes capacitive-coupled RF excitation to produce stable, uniform plasma discharges—ideal for delicate substrates requiring high reproducibility without thermal degradation. Its core function is surface activation, organic residue removal, photoresist stripping, and chemical functionalization via reactive species (e.g., atomic oxygen, nitrogen radicals, and ionized gas fragments) generated from process gases such as O₂, Ar, N₂, or forming gas (N₂/H₂). The system maintains chamber wall temperatures below 45 °C even during continuous 3-minute full-power operation—ensuring compatibility with heat-sensitive polymers (e.g., PDMS, PET), 2D materials (graphene, MoS₂), oxide-coated substrates (ITO, SiO₂), and microfabricated devices (MEMS, microfluidics).

Key Features

• Stainless steel (304 grade) vacuum chamber with electropolished interior for corrosion resistance and ultra-low outgassing
• Dual independent gas inlets equipped with solenoid valves and calibrated flow paths—enabling precise gas mixing and sequential process steps
• Integrated digital vacuum gauge with real-time pressure display (1×10⁻³–1×10² Pa range), supporting both roughing and process pressure optimization
• 7-inch industrial-grade touchscreen HMI with intuitive workflow navigation, pre-programmable recipes, and event-logged operational history
• Full automation sequence: door interlock verification → vacuum pump start → pressure stabilization → RF ignition → timed plasma exposure → automatic venting → pump shutdown
• Embedded safety architecture including hardware-level door interlock, thermal cut-off circuitry, and RF power fail-safe shutdown
• Software compliance-ready: control firmware registered under Chinese Copyright No. 2021SR1026389; supports audit trail export (CSV) for GLP/GMP-aligned documentation

Sample Compatibility & Compliance

The VP-RS8 accommodates substrates up to 150 mm in diameter—including silicon wafers, glass slides, ceramic substrates, polymer films (PET, PI, PDMS), metallic foils, and fiber mats—without requiring custom fixtures. Its low-energy plasma chemistry avoids sputtering damage or subsurface lattice disruption, making it suitable for pre-bonding surface activation (e.g., PDMS-to-glass microfluidic bonding), ITO cleaning prior to thin-film deposition, graphene defect passivation, and carbonaceous residue ashing (e.g., photoresist, carbon nanotube scaffolds). While not certified to ISO 13485 or FDA 21 CFR Part 11 out-of-the-box, its deterministic process repeatability, parameter logging capability, and closed-loop vacuum/RF control align with foundational requirements for regulated R&D environments. Users routinely validate processes per ASTM F2613 (standard guide for plasma cleaning of medical device components) and IPC-CC-830B (for electronics cleanliness verification).

Software & Data Management

The VP-RS8 runs SUNJUNE’s proprietary PlasmaControl™ v3.2 firmware—designed specifically for vacuum plasma process traceability. All operational parameters (RF power, pressure setpoint, gas selection, exposure duration, vacuum ramp rate) are stored with timestamps and user ID tags. The system exports session logs in comma-separated values (CSV) format, compatible with LIMS integration and statistical process control (SPC) platforms. Remote diagnostics via Ethernet port enable firmware updates and configuration backup without physical access. For labs implementing electronic records per ALCOA+ principles, the software supports configurable audit trails, role-based access control (admin/operator modes), and tamper-evident log signing—facilitating internal quality audits and method transfer documentation.

Applications

• Semiconductor R&D: Photoresist removal from Si/SiO₂ wafers; native oxide reduction prior to ALD
• Microfluidics: Oxygen plasma activation of PDMS surfaces to enhance irreversible bonding with glass or thermoplastics
• Flexible electronics: Surface energy tuning of PET and PI substrates for uniform inkjet-printed electrode patterning
• Biomedical devices: Sterilization and hydrophilicity enhancement of PTFE catheters and porous scaffold materials
• Energy materials: Cleaning and functionalization of solid-state electrolyte interfaces (e.g., LLZO, LATP) prior to Li-metal anode assembly
• Advanced composites: Fiber-matrix adhesion promotion via amine group grafting on carbon fiber surfaces

FAQ

What gases are compatible with the VP-RS8?
O₂, Ar, N₂, air, and forming gas (N₂/H₂) are validated for routine use. Reactive gas mixtures (e.g., O₂/Ar) may be employed for enhanced etch rates or selective surface oxidation.
Can the VP-RS8 handle powder samples?
No—the VP-RS8 is optimized for flat or planar substrates. For powdered or granular materials, SUNJUNE recommends the VP-T series rotary plasma systems with tumbling sample holders.
Is remote monitoring supported?
Yes—Ethernet connectivity enables live status viewing, log retrieval, and secure firmware updates via local network; no cloud dependency or external server required.
What vacuum pump is recommended?
A two-stage oil-sealed rotary vane pump (≥4 m³/h pumping speed) or dry scroll pump (ISO 8573-1 Class 2) is advised for optimal base pressure (<5 Pa) and long-term reliability.
Does the system comply with electromagnetic compatibility (EMC) standards?
The VP-RS8 meets EN 61326-1:2013 (industrial EMC) and EN 61000-6-3:2011 (emission limits) per its CE-conformity declaration—suitable for shared laboratory infrastructure.