A 920 MHz UHF RFID Tag Antenna Produced by Drop Casting Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene
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Bibliographic record
Abstract
The continuous growth of RFID technology due to the increasing demands in healthcare and manufacturing industries has prompted the adoption and integration of novel materials in the structure of RFID identifiers. This work presents a 920 MHz UHF RFID identifier (tag) antenna, fabricated by drop-casting of MXene (Ti <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> C <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> T <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</inf> ) on acetate substrates at ambient conditions. RFID tags with similar geometries and different thickness of MXene layers (0.4 µm and 0.85 µm) were fabricated and experimentally investigated via measuring the input impedance through scattering parameters (reflection coefficients). At 920 MHz, tags with one and two coating cycles demonstrated an impedance of Z <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</inf> =73+j105, and Z <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</inf> =27+j54, respectively. Drop casting and drying cycles significantly affected the input impedance of the tags, attributed to the variation of bulk conductivity in the strip-line traces. Additionally, the performance of the tags was monitored in cyclic humidity levels from 5% to 65%, which demonstrated negligible performance fluctuation of 0.48%. The initial findings suggest that drop-casting of MXene on flexible substrates has the potential to produce cost-effective and flexible RFID tags and serve as a viable substitute for conventional metallic tags.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.003 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.003 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it