{
    "title": "Teslaphoresis",
    "inventor_name": "Paul Cherukuri",
    "publication_year": 2016,
    "device_name": "Custom-built Tesla coil (Teslaphoresis system)",
    "goal": "Remote, scalable self-assembly of nanomaterials (e.g., carbon nanotubes) into macroscopic wires and circuits.",
    "problem_addressed": "Difficulty in assembling nanoscale building blocks into larger, functional structures in a controllable and scalable manner.",
    "concept_summary": "A high-voltage Tesla coil creates a strong, spatially extended electric-field gradient that polarizes conductive nanomaterials such as single-walled carbon nanotubes. The induced dipoles experience dielectrophoretic forces that align and pull the nanotubes together, forming continuous nanowires over distances of tens of centimeters. The same field can also wirelessly power simple circuits (e.g., LED loads) built from the assembled nanotubes.",
    "detailed_description": "The researchers built a bench-top Tesla coil that generates a high-voltage, high-frequency alternating electric field extending into free space. When carbon nanotubes are placed within this field, each tube becomes polarized, producing induced dipoles that experience a net force toward regions of higher field intensity. This force aligns the tubes and draws them together, causing them to chain-assemble into long, continuous wires up to 15 cm in length. The assembled wires can bridge electrical contacts, forming circuits that harvest energy from the same field to light LEDs. The effect has been observed at distances greater than 30 cm from the coil, and the authors suggest that larger or patterned coil arrays could enable more complex self-assembled structures.",
    "category": "Nanotechnology",
    "principles": [
        "Electrokinetic (dielectrophoretic) force",
        "Polarization of conductive nanomaterials",
        "High-voltage electric-field gradient"
    ],
    "scientific_domains": [
        "Nanoscience",
        "Materials Science",
        "Physics",
        "Electrical Engineering"
    ],
    "mechanisms_of_action": [
        "Induced dipole formation in nanotubes",
        "Dielectrophoretic attraction toward field maxima",
        "Self-assembly via chain formation"
    ],
    "materials": [
        "Single-walled carbon nanotubes",
        "Other conductive nanomaterials (potentially)"
    ],
    "energy_sources": [
        "High-voltage alternating current (Tesla coil)"
    ],
    "inputs": [
        "Electrical power to drive Tesla coil",
        "Dispersion of carbon nanotubes in a fluid or on a substrate"
    ],
    "outputs": [
        "Aligned nanowire wires",
        "Wirelessly powered LED circuits"
    ],
    "claimed_performance": "Nanowire lengths up to 15 cm; self-assembly observed at distances >30 cm; LEDs lit wirelessly using harvested field energy.",
    "experimental_evidence": "Demonstrated in ACS Nano (2016) with photographs and video of nanotube wires forming and lighting LEDs; quantitative lengths and distances reported.",
    "replication_status": "No explicit replication reported in the article.",
    "keywords": [
        "Teslaphoresis",
        "Tesla coil",
        "Dielectrophoresis",
        "Carbon nanotubes",
        "Self-assembly",
        "Wireless power"
    ],
    "related_technologies": [
        "Dielectrophoretic manipulation",
        "Nanomanufacturing",
        "Wireless energy transfer",
        "Nanorobotics"
    ],
    "controversy_level": "low",
    "confidence_score": 0.9,
    "practicability_score": 0.6,
    "fringe_score": 0.2,
    "evidence_strength": 0.7,
    "risk_score": 0.1,
    "trl_estimate": 4,
    "source_urls": [
        "http://news.rice.edu/2016/04/14/nanotubes-assemble-rice-introduces-teslaphoresis-2/",
        "http://pubs.acs.org/doi/abs/10.1021/acsnano.6b02313",
        "https://www.youtube.com/watch?v=w1d0Lg6wuvc"
    ],
    "organizations": [
        "Rice University",
        "Texas A&M University",
        "University of Tennessee-Chattanooga"
    ],
    "applications": [
        "Scalable nanowire fabrication",
        "Flexible electronics",
        "Regenerative medicine scaffolds",
        "Sensor arrays"
    ],
    "limitations": [
        "Effective range limited to a few feet with current coil size",
        "Requires high-voltage equipment",
        "Primarily demonstrated with carbon nanotubes; other materials untested"
    ],
    "open_questions": [
        "How to increase the assembly distance and throughput?",
        "Can the technique be applied to non-conductive nanomaterials?",
        "What is the energy efficiency of the wireless powering aspect?",
        "How to achieve precise patterning and complex circuit geometries?"
    ],
    "red_flags": [],
    "evidence_quotes": [
        "Scientists at Rice University have discovered that the strong force field emitted by a Tesla coil causes carbon nanotubes to self-assemble into long wires, a phenomenon they call aTeslaphoresis.",
        "The researchers discovered that the phenomenon simultaneously assembles and powers circuits that harvest energy from the field. In one experiment, nanotubes assembled themselves into wires, formed a circuit connecting two LEDs and then absorbed energy from the Tesla coil's field to light them.",
        "We show that the TEP field not only directs the self-assembly of long nanotube wires at remote distances (>30 cm) but can also wirelessly power nanotube-based LED circuits.",
        "The longest thus far being 15 cm."
    ]
}