In situ measurement of the temperature of water in microchannels using laser Raman spectroscopy

- In situ measurement of water temperature between 30 °C and 58 °C within a microchannel.
- Linear dependence between peak intensities and temperatures.
- Temperature determination achieved an accuracy of ±1.2 °C.
- Application of laser Raman spectroscopy with a spatial resolution of 15 μm in width and 25 μm in depth.