Amino AcidsGlycine

Glycine as an indirect structural inducer enhances piezoelectric performance of silk fibroin patches for wireless facial micromotion monitoring during sleep

The study developed a fully green bioelectronic piezoelectric film using silk fibroin, where glycine was used as an indirect structural inducer to regulate secondary structure and increase ฮฒ-sheet content, significantly improving piezoelectric performance. This enabled a soft, ultrathin patch sensor for dual-channel, real-time tracking of rapid eye movements and nasal flaring during sleep. The system demonstrated superior softness, micron-scale thickness, heightened force sensitivity, and stable signal response.

Last updated: Jul 7, 2026โ€ข0 RCTsโ€ข๐Ÿ“– Read as article โ†’

Evidence Score

Evidence Score24/100
Human RCTโ˜†โ˜†โ˜†โ˜†โ˜†
Meta-analysisโ˜†โ˜†โ˜†โ˜†โ˜†
Mechanismโ˜†โ˜†โ˜†โ˜†โ˜†
Safetyโ˜†โ˜†โ˜†โ˜†โ˜†
Confidencelow

Study Evidence

Study 1. Real-time facial micromotion tracking enabled by an ultrathin silk fibroin patch.

observational

Li Q, Pan Z, Zhu K, Chang Y, Zhou F, Guo W, Duan X, Xue Q ยท Microsystems & nanoengineering (2026)

Participants: N/A
Duration: N/A
Intervention: Glycine as an indirect structural inducer in silk fibroin film fabrication
Outcome: Piezoelectric performance (force sensitivity, signal stability), real-time tracking of rapid eye movements and nasal flaring during sleep
Effect Size: N/A
Population: Not specified (device testing, likely healthy adults in sleep monitoring context)

Result:

PubMed: 42161935DOI: 10.1038/s41378-026-01327-9

Mechanism Graph

Glycine acts as an indirect structural inducer for silk fibroin
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Regulation of secondary structure increases ฮฒ-sheet content
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Enhanced molecular alignment improves piezoelectric performance
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Calcium ion coordination modulates Young's modulus for skin compatibility
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Result: Soft, ultrathin patch enables wireless facial micromotion monitoring

Limitations

  • โš Human subjects not explicitly studied; results based on sensor development and testing
  • โš Long-term durability and real-world sleep monitoring performance not reported
  • โš Comparative data against existing sleep monitoring technologies not provided

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References

  1. 1.Li Q, Pan Z, Zhu K, Chang Y, Zhou F, Guo W, Duan X, Xue Q. "Real-time facial micromotion tracking enabled by an ultrathin silk fibroin patch.." Microsystems & nanoengineering, 2026. PMID: 42161935 DOI: 10.1038/s41378-026-01327-9
Disclaimer: This content is for educational purposes only and is not medical advice. Evidence scores reflect the quality and quantity of available research, not clinical recommendations. Always consult a healthcare professional before starting any supplement or intervention.