{'fraction_non_alphanumeric': 0.025240384615384616, 'fraction_numerical': 0.020432692307692308, 'mean_word_length': 4.866197183098592, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
A Transmission Line Based Microwave Heater at 25 GHz for Continuous Flow Microfluidics Fabricated on Silicon

In this work, a co-planar waveguide (CPW) microwave transmission line on high-resistivity silicon is employed as a microwave heater at 25 GHz to heat a sub-microliter volume of 0.23 μL. The CPW heater and fluidic layout are co-designed using COMSOL Multiphysics to achieve rapid, contact-less and uniform heating. The manufactured device is bond-wired and experimentally tested using the simultaneous microwave excitation and optical investigation. Heating performance is evaluated using a fluorescent mixture of Rhodamine B and deionised water loaded in the fluidic channel. A heating rate of 12°C/s is achieved with 1.58 W of power at 25 GHz and the heating uniformity of ±2°C is maintained during 10 seconds of heating.