Smart textile plasmonic fiber dew sensors

Area of Science:

• Optoelectronics
• Materials Science
• Textile Engineering

Background:

• Smart textiles require integrated sensors for environmental monitoring.
• Dew formation and evaporation are critical factors in textile performance and comfort.
• Existing methods for dew detection lack speed and precision.

Purpose of the Study:

• To develop a novel Surface Plasmon Resonance (SPR)-based sensor for detecting dew formation in optical fiber-based smart textiles.
• To enable real-time monitoring of moisture condensation and evaporation.
• To determine dew point temperature and relative humidity with high accuracy and resolution.

Main Methods:

• Integration of an SPR sensor with optical fibers within smart textiles.
• Observation of moisture condensation and water molecule evaporation.
• Measurement of water layer depth changes and evaporation time using the SPR sensor.

Main Results:

• The SPR sensor detects dew formation in less than 0.25 seconds.
• Dew point temperature is determined with 4% accuracy.
• Water layer depth is monitored with 7 nm resolution up to 250 nm.
• Relative humidity is estimated between 30% and 70%.

Conclusions:

• The proposed SPR sensor offers a rapid and accurate method for dew detection in smart textiles.
• This technology enables precise monitoring of moisture dynamics, crucial for textile applications.
• The sensor's capabilities extend to environmental sensing, including relative humidity estimation.