GMP™ (Gas Matrix Piezoelectric)

Our patented revolutionary piezoelectric composite, GMP™, has significant advantages over other piezocomposite materials.  With superior sensitivity and bandwidth, GMP™ represents the next step in low frequency ultrasound.  Ultran can provide GMP™ composite material at frequencies between 30 kHz and 500 kHz in various shapes and sizes.  Please contact us at info@ultrangroup.com to purchase or for further information.

Key Features and Advantages of GMP™

      • Thickness coupling factor, kt = Longitudinal coupling factor, k33
      • Mechanical quality factor Qm = <1, Extremely high bandwidth
      • Sensitivity: Extremely high
      • Acoustic cross talk kp: Negligible
      • Dielectric constant: Very low
      • Very easy to excite even by very low energy excitation source
      • Density: <3 g/cc
      • Signal to Noise Ratio (SNR): Very high
      • Unusually strong even harmonics
      • GMP manufacturability allows construction of very large transmitters and very small arrays
      • Mechanical Strength: Extremely high
      • Built-in heat dissipation mechanism

 

100 kHz Head-On Comparison of GMP™ vs. Leading Alternative Materials

500 kHz Head-On Comparison of GMP™ vs. Leading Alternative Materials 

Water Immersion

Summary of above comparison at 500 kHz nominal frequency

TRANSDUCER TYPE 500 kHz nominal 25 mm active diameter TEST MEDIUM Z (MRAYL) BANDWIDTH CENTER FREQUENCY (kHz) BANDWIDTH @ -6 dB (kHz) REFLECTED SENSITIVITY (dB)
PMP – Z matched to polymer 25 mm Polystyrene – 2.44 500 190 -19
GMP™ – Z matched to polymer* 400 300 -14
PMP – Z matched to water 25 mm Water – 1.5 510 240 -16
GMP™ – Z matched to water* 440 280 -11

*US and International Patents.

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