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    "headline": "One Amplifier Drove Many Haptic Pixels by Frequency",
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    "dek": "A piezoelectric display encoded intensity in vibration frequency instead of separate amplitudes.",
    "summary": "A piezoelectric display encoded intensity in vibration frequency instead of separate amplitudes.",
    "body_text": "The proof-of-concept haptic display uses frequency-modulated piezoelectric actuators and a shared-source architecture in which multiple pixels draw power from one amplifier while their spectra remain individually controlled. Volunteer tests found that participants could distinguish the investigated spatial and temporal patterns. The approach could reduce high-power electronics in larger wearable displays, but the paper demonstrates feasibility over a limited prototype and operating range rather than a finished high-density device.",
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    "tags": [
      "haptics",
      "piezoelectric actuators",
      "wearables"
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    {
      "source_id": "source-2026-09-28-012",
      "title": "arXiv preprint 2609.30626",
      "publisher": "arXiv",
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      "published_at": "2026-09-24T19:25:51.000-04:00",
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    "title": "One Amplifier Drove Many Haptic Pixels by Frequency",
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