Applications

DIASEMI™ CVD Diamond Acoustic Dome Tweeter

Enabling the Next Generation of High-Fidelity Audio, RF, and Precision Sensing

In advanced applications such as high-end audio systems, 5G/6G RF front-ends, and precision acoustic sensing, conventional materials are reaching their physical limits—restricted high-frequency extension, increased distortion, limited power handling, and long-term instability.

DIASEMI leverages proprietary MPCVD (Microwave Plasma Chemical Vapor Deposition) technology to deliver next-generation CVD diamond acoustic materials, redefining performance boundaries with unmatched mechanical and acoustic properties.

Unmatched Acoustic Performance — The Ultimate Material for Sound

CVD diamond combines ultra-high Young’s modulus, extreme acoustic velocity, and low density, making it widely recognized as the ultimate acoustic material, outperforming aluminum, magnesium, titanium, beryllium, and traditional piezoelectric substrates.

Key Advantages:

• Ultra-High Sound Velocity
  Enables significantly higher breakup frequency, delivering extended high-frequency response beyond audible limits with exceptional clarity and detail.

• Ultra-Low Distortion
  Superior linearity minimizes total harmonic distortion (THD), ensuring pure, natural, fatigue-free sound reproduction.

• High Power Handling Capability
  Exceptional stiffness prevents deformation under high drive levels, supporting high SPL and long-term reliability.

• Extreme Stability
  Chemically inert and thermally robust, ensuring zero performance degradation over time.

Core Mechanical Property:

• Young’s Modulus: 1050 ± 100 GPa

Precision Manufacturing — Ultra-Thin, Mirror-Grade Diamond Films

Powered by advanced MPCVD growth and ultra-precision processing, DIASEMI achieves scalable production of high-uniformity diamond acoustic membranes.

Typical Specifications:

• Diameter: φ18 – 37 mm

• Thickness: 30 – 50 μm

• Weight: 0.06 – 0.09 g

Tolerances:

• Diameter: ±0.03 mm

• Roundness: ±0.05 mm

• Radius of Curvature (SR): ±0.15 mm

Customization Available:

• Thickness / Diameter / Curvature

• Surface finishing & integration-ready geometries

Application Coverage — From Hi-Fi Audio to 6G RF

DIASEMI CVD diamond acoustic materials empower a wide range of cutting-edge applications:

High-End Audio Systems

• Diamond tweeters with wide frequency response and ultra-low distortion

• Enhanced soundstage accuracy and clarity

• Ideal for premium automotive and audiophile systems

SAW (Surface Acoustic Wave) Filters

• High acoustic velocity & low insertion loss

• Supports high-frequency, miniaturized, high-power RF front-end modules

• Critical for 5G and future 6G communications

Precision Acoustic Sensors

• Fast response, high sensitivity, and long-term stability

• Suitable for industrial inspection, smart sensing, and metrology systems

Extreme Environment Acoustic Devices

• High temperature resistance and chemical stability

• Designed for aerospace, defense, and harsh environments

Why DIASEMI

• Proprietary MPCVD diamond growth platform

• Scalable production with semiconductor-grade consistency

• Full-stack capability: material → processing → application integration

• Enabling next-generation acoustic and RF device innovation