Geng Integrity Report: Multioctagonal Ring Metamaterial with Broadband Microwave Absorption at Elevated Temperature (DOI: 10.1002/pssr.202200478)

Academic fraud report · Geng Detector

Summary

Verdict: Highly suspicious. This Rapid Research Letter reports a multioctagonal ring metamaterial with broadband microwave absorption at elevated temperature. Three internal-text inconsistencies were verified from the manuscript: (1) The minimum reflection loss is stated as -18.19 dB at 9.2 GHz in the Results section but as -18.06 dB in the Conclusion — a 0.13 dB discrepancy in the paper's headline simulated metric. (2) The vector network analyzer is referred to as a "Keysight 5071C," which omits the leading "E" from the standard Keysight/Agilent E5071C ENA model. (3) A sentence describing the effective absorption bandwidth at 700 °C is grammatically inverted, claiming the EAB "increases to 500 °C," which reverses the intended thermal trend. Image reuse, image splicing, statistical anomalies, and timeline irregularities could not be assessed because only text was provided. Overall confidence is moderate; findings rely on textual contradictions rather than forensic image or statistical evidence, and cannot be confirmed without the authors' raw CST and .s2p data.

Verdict

🟠 Highly suspicious. Three independently verified textual irregularities in a short Rapid Research Letter indicate sloppy drafting and inconsistent reporting of the paper's central simulated metric. A definitive determination of misconduct is not possible from text alone; raw simulation files and measurement data are required.

Key findings

Internal contradiction of headline simulated value: Results section reports RLmin = -18.19 dB at 9.2 GHz; Conclusion reports -18.06 dB at the resonance point. A 0.13 dB discrepancy in the same metric within one short letter.
Instrument model misstatement: The vector network analyzer is named "Keysight 5071C"; the standard commercial designation is Keysight E5071C (ENA series), suggesting copy-paste or careless writing in the methodology.
Inverted thermal-trend sentence: The 700 °C EAB clause reads "increases to 500 °C," reversing the temperature direction described immediately before it.
No image-forensic evidence available: Figures 1–4 (simulation curves, field distributions, experimental photos) were not supplied, so duplicate-image and splice checks could not be performed.
No statistical evidence available: The paper reports only a few scalar values; no error bars, SD/SE, or p-values are provided, so last-digit and p-hacking analyses are not applicable.
Timeline benign: Received 22 Dec 2022; published 17 Jan 2023 — consistent with the RRL rapid-publication format. No obvious self-citation or funding irregularity was detected.

Evidence highlights

Section 3 (Results and Discussion) vs. Section 5 (Conclusion): RLmin reported as -18.19 dB at 9.2 GHz vs. -18.06 dB at the resonance point — exact numeric mismatch of 0.13 dB.
Section 4 (Testing and Experimental Verification): "Keysight 5071C vector network analyzer" — missing leading "E" relative to the canonical Keysight E5071C ENA model.
Section 4: "The EAB of the metamaterial absorber is 10.7 GHz (7.3–18 GHz) at 700 °C, which increases to 500 °C..." — EAB of 10.6 GHz at 500 °C and 10.7 GHz at 700 °C indicates the intended trend is an increase from 500 °C to 700 °C, not the reverse.
DOI: 10.1002/pssr.202200478; journal: physica status solidi (RRL) – Rapid Research Letters; year: 2023.

Notes

Confidence in the three textual findings is high because they are directly verifiable from the manuscript. Their interpretive weight (carelessness vs. data fabrication) is moderate; such inconsistencies are non-trivial in a published RRL but do not by themselves prove fraud.
Image-based, statistical, and timeline-audit conclusions are explicitly limited by the text-only input and should not be interpreted as exoneration.
Recommended follow-up: request the authors' raw CST simulation files and .s2p VNA exports to identify which RLmin value (-18.19 dB or -18.06 dB) corresponds to the actual dataset; flag the contradictions on PubPeer.