Phase-Changing Vanadium Oxides for Electromagnetic Radiation Management.

PAPER pubmed Small science 2026 Review Effect: unclear Evidence: Insufficient

Read original paper → DOI: 10.1002/smsc.202500614 PMID: 41624342 Evidence Lab

Abstract

Vanadium oxides and their polymorphs are transforming electromagnetic radiation security in communications and infrastructure. This arises from their broadband response and potential for wavelength attenuation across the ultraviolet, optical, infrared, and radio regions of the electromagnetic spectrum. More specifically, monoclinic vanadium dioxide's sharp, reversible insulator-to-metal transition near room temperature enables ultrafast, tuneable switching of conductivity and optical properties, triggered by thermal, optical, or electrical controls. Chalcogenide phase-change materials require high crystallisation temperatures and nanosecond switching times, whereas VO's volatile Mott transition operates near ambient conditions with femtosecond response and cycling stability exceeding 100 million cycles. This dynamic modulation supports real-time absorption, shielding, and beam steering across terahertz, infrared, and radiofrequency domains, with demonstrated absorption rates tuneable from 2% to 100% and bandwidths up to 6.35 THz. VO metasurfaces offer polarisation insensitivity and multifunctionality, protecting against jamming, interception, and signal leakage. Advances in large-area synthesis, nanostructuring, and durability have enabled both highly sensitive sensors and long-lived smart coatings. These findings position vanadium oxides as transformative materials for physical-layer electromagnetic security in wireless communications, infrastructure protection, and smart sensing systems.

AI evidence extraction

At a glance

Study type

Review

Effect direction

unclear

Population

—

Sample size

—

Exposure

Evidence strength

Insufficient

Confidence: 74% · Peer-reviewed: yes

Main findings

The review describes phase-changing vanadium oxides (notably VO2) as enabling tunable, reversible modulation of conductivity and optical properties near room temperature, supporting real-time absorption, shielding, and beam steering across terahertz, infrared, and radiofrequency domains. It reports demonstrated absorption tunability from 2% to 100%, bandwidths up to 6.35 THz, and cycling stability exceeding 100 million cycles, with applications in electromagnetic security, smart coatings, and sensing.

Outcomes measured

electromagnetic radiation attenuation
absorption
shielding
beam steering
electromagnetic security (jamming/interception/signal leakage protection)
metasurface performance (bandwidth, tunability, polarization response)
switching speed and cycling stability

View raw extracted JSON

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    "study_type": "review",
    "exposure": {
        "band": null,
        "source": null,
        "frequency_mhz": null,
        "sar_wkg": null,
        "duration": null
    },
    "population": null,
    "sample_size": null,
    "outcomes": [
        "electromagnetic radiation attenuation",
        "absorption",
        "shielding",
        "beam steering",
        "electromagnetic security (jamming/interception/signal leakage protection)",
        "metasurface performance (bandwidth, tunability, polarization response)",
        "switching speed and cycling stability"
    ],
    "main_findings": "The review describes phase-changing vanadium oxides (notably VO2) as enabling tunable, reversible modulation of conductivity and optical properties near room temperature, supporting real-time absorption, shielding, and beam steering across terahertz, infrared, and radiofrequency domains. It reports demonstrated absorption tunability from 2% to 100%, bandwidths up to 6.35 THz, and cycling stability exceeding 100 million cycles, with applications in electromagnetic security, smart coatings, and sensing.",
    "effect_direction": "unclear",
    "limitations": [],
    "evidence_strength": "insufficient",
    "confidence": 0.7399999999999999911182158029987476766109466552734375,
    "peer_reviewed_likely": "yes",
    "keywords": [
        "vanadium oxides",
        "VO2",
        "phase-change materials",
        "insulator-to-metal transition",
        "Mott transition",
        "metasurfaces",
        "electromagnetic radiation management",
        "shielding",
        "absorption",
        "beam steering",
        "terahertz",
        "radiofrequency",
        "wireless communications security"
    ],
    "suggested_hubs": []
}

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AI-extracted fields are generated from the abstract/metadata and may be incomplete or incorrect. This content is for informational purposes only and is not medical advice.

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