{'fraction_non_alphanumeric': 0.027074235807860263, 'fraction_numerical': 0.010480349344978166, 'mean_word_length': 4.907216494845361, '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}}
Selective trapping of micro-particles on terahertz metamaterial with macro gesture manipulation

To improve the sensitivity of detecting micro-particles, we propose new designs of terahertz metamaterial devices. These devices use microstructures to support the metal layer of metamaterial and thus can trap micro-particles at sensitive positions. We present two methods of selectively trapping micro-particles on such devices. One is to trap the micro-particles at the openings of split-ring-resonators (SRR), and the other is to trap them inside the SRR. Both methods use simple thumb gestures to control the movement of micro-particles. The methods can capture particles over a large surface area with time efficiency and at low cost. Single particles trapped at each trapping site was achievable; the trapping rate was 64% using the first method, and 71% using the second. As a result, the resonant frequency, before and after the micro-particles were trapped, shifted 23 GHz for the first method, and 71 GHz for the second. This shows great improvement compared to the earlier report of 15% trapping rate and 10 GHz resonant frequency shift.