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A composite for acoustic insulation of ultrasonic diagnostic probes

✍ Scribed by G. R. Sagatelyan; Yu. E. Alferov; V. O. Osipkov; Z. F. Kas'yanova

Publisher
Springer US
Year
1994
Tongue
English
Weight
277 KB
Volume
28
Category
Article
ISSN
0006-3398

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✍ R.L. Willett; L.N. Pfeiffer πŸ“‚ Article πŸ“… 1996 πŸ› Elsevier Science 🌐 English βš– 276 KB

By probing the low-disorder two-dimensional electron system at submicron dimensions, important new length scales are revealed. Using surface acoustic waves of wavelength )~ < 1 gm to measure the 2D electron conductivity, enhanced conductivity is observed at even-denominator filling factors v = Β½, ΒΌ: