PAPER 3 - A Graphene-Based Gravitational Wave Detector: Conceptual Design and Sensitivity Considerations

DOI: To Be Assigned

John Swygert

March 9, 2026

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Abstract

Gravitational waves are currently detected primarily using kilometer-scale laser interferometers such as those operated by the LIGO Scientific Collaboration. This paper proposes a conceptual alternative approach using the exceptional mechanical and electronic properties of graphene to detect spacetime strain at nanoscopic scales. The concept explores the possibility that gravitational waves may induce measurable perturbations in graphene electron lattices. While highly preliminary, this approach may motivate further investigation into nanoscale gravitational-wave sensing technologies.

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1. Introduction

The detection of gravitational waves represents one of the most significant scientific achievements of the twenty-first century. Current detectors rely on kilometer-scale laser interferometers capable of measuring spacetime strain on the order of:

h \sim 10^{-21}

While these detectors have proven successful, their scale and cost motivate exploration of complementary detection technologies.

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2. Graphene as a Sensing Medium

Graphene possesses several properties that make it an attractive candidate for precision sensing:

• atomic-scale lattice structure

• extremely high electron mobility

• exceptional mechanical strength

• high sensitivity to strain

These properties have already enabled graphene to function as a sensitive detector in nanoscale mechanical and electronic systems.

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3. Conceptual Detector Design

The proposed detector consists of a suspended graphene membrane integrated into an electronic measurement circuit.

In principle, a passing gravitational wave would produce minute strain in spacetime. This strain could induce deformation in the graphene lattice, altering electron distributions and measurable electrical properties.

Potential detection mechanisms include:

• capacitance variation

• tunneling current variation

• nanoscale displacement measurement

Figure 3. Conceptual design of a graphene-based gravitational wave detector. A suspended graphene membrane acts as a nanoscale resonant sensing element. Passing gravitational waves may induce minute spacetime strain, producing deformation in the graphene lattice that can be measured through electronic or capacitive sensing techniques.

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4. Sensitivity Considerations

Initial order-of-magnitude estimates suggest that gravitational-wave induced strain could produce extremely small lattice displacements on the order of picometers or smaller.

Detecting such displacements would require:

• cryogenic operation

• advanced noise suppression

• nanoscale displacement sensing

Further research would be necessary to evaluate whether graphene-based detectors could approach or complement the sensitivity of existing interferometric observatories.

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5. Future Work

Future investigation of this concept may include:

• nano-mechanical modeling of graphene membranes

• strain-to-signal coupling analysis

• noise modeling and sensitivity estimation

• laboratory prototype development

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6. Conclusion

Graphene’s unique physical properties make it a promising candidate for precision sensing applications. While the concept remains highly preliminary, nanoscale detectors based on graphene or similar materials may one day complement large-scale gravitational-wave observatories.

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References

Abbott, B. P. et al.
Observation of Gravitational Waves from a Binary Black Hole Merger.

Novoselov, K. et al.
Graphene: Status and Prospects.