Memo　Here’s a global overview of organizations and companies known to provide or develop Plasma Assisted Polishing (PAP) technologies

Here’s a global overview of organizations and companies known to provide or develop Plasma Assisted Polishing (PAP) technologies, along with their notable features and specializations:

Key Providers and Developers of PAP Technology

J‑tec Corporation (Japan)

• A leading commercial supplier of PAP systems, including the PA1100 model. Their PAP equipment uses plasma-activated ions and radicals to chemically weaken interatomic bonds, enabling efficient, damage-free polishing of ultra-hard materials like diamond and SiC. The method achieves surface roughness improvements from ~61.8 nm to ~0.31 nm (Sa), preserving crystal structure integrity (no altered layers). It is also a completely dry, slurry-free process, reducing environmental impact and operating costs. Significant applications include power electronics, aerospace optics, medical devices, and high-end laser systems. アカデミア+9株式会社ジェイテックコーポレーション |+9株式会社ジェイテックコーポレーション |+9

Academic and Research Institutions (Japan, Osaka University)

• PAP originated from ultra-precision machining research at Osaka University, led by researchers such as Nobuyuki Zettsu. Published studies demonstrate PAP's ability to polish 4H-SiC and single-crystal diamond to atomically flat (<0.1 nm RMS) surfaces without inducing subsurface damage, via atmospheric-pressure helium-based water vapor plasma plus gentle abrasives. アカデミア+1Bohrium+1

Research Publications and Labs in China and Global Institutions

• Recent scientific studies—including on GaN (0001) substrates—highlight PAP’s high-quality finishing capabilities using combined plasma and modified layer removal methods. These results underline PAP’s relevance for wide bandgap materials increasingly used in EV power devices and 5G components. diasemi.us+8サイエンスダイレクト+8Bohrium+8

Notable Features of PAP Providers

• Ultra-Precision, Non‑Destructive Polishing
  PAP achieves atomic-level smoothness (sub-nanometer RMS), avoiding subsurface damage entirely—critical for materials like diamond, SiC, GaN, and AlN. サイエンスダイレクト+10株式会社ジェイテックコーポレーション |+10atcera.com+10アカデミア+1atcera.com+1

• Dry, Environmentally Friendly Process
  No slurries or chemical waste—reducing environmental burden and simplifying maintenance. J‑tec emphasizes its slurry‑free, chemical‑free design as a key advantage. 株式会社ジェイテックコーポレーション |+1WIRED+1株式会社ジェイテックコーポレーション |+5株式会社ジェイテックコーポレーション |+5atcera.com+5

• Applicable to Ultra-Hard and Brittle Materials
  Demonstrated on diamond (including CVD single‑crystal), sapphire, SiC, GaN, and AlN substrates—all traditionally difficult for mechanical polishing. Wiley Online Library+13株式会社ジェイテックコーポレーション |+13株式会社ジェイテックコーポレーション |+13

• Improved Throughput Compared to Traditional Techniques
  While not as fast as CMP, PAP offers shortened polishing time versus traditional scaife or diamond abrasive methods, without sacrificing quality. サイエンスダイレクト+9株式会社ジェイテックコーポレーション |+9株式会社ジェイテックコーポレーション |+9

• Damage-Free Polishing Process
  PAP produces no altered layer or surface damage detectable via AFM or Raman spectroscopy, preserving crystallinity—even in diamond substrates. 株式会社ジェイテックコーポレーション |+1サイエンスダイレクト+1

Emerging Developments and Experimental Implementations

Institution/RegionFocus MaterialFeature
Osaka University (Japan)
4H‑SiC, single-crystal diamondAtomic-flat, damage-free finish (<0.1 nm RMS) atcera.com+14アカデミア+14株式会社ジェイテックコーポレーション |+14

Academic labs in China
GaN, AlN ceramicsLow-damage polishing, reduced subsurface stress, RMS <2 nm atcera.comサイエンスダイレクト

Emerging R&D bodies globally
Advanced substratesTechniques combining plasma + soft abrasives for wide bandgap semiconductors