Batch-0042-020: Polarimetric Authentication of Handwoven Textile Provenance in Andean Highlands

批次0042-020：安第斯高原手工织物产地溯源的偏振光认证技术

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Peruvian textile conservators at Cusco’s Centro de Textiles Tradicionales use Mueller matrix polarimetry to distinguish authentic Q’ero alpaca wool—spun with specific torsional birefringence—from commercial blends lacking native fiber twist signature.
High-resolution polarization contrast reveals microstructural differences invisible to SEM: native fiber alignment produces elliptical retardation patterns correlating with altitude-specific shearing practices.

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