SeaSar The crown that shields you from waves
A crown of stainless steel alloyed with gold, tantalum and hafnium. This circuit of noble materials emits protective waves, rebound waves for interference cancellation, and modulates photonic waves through precious stones.
A material architecture in service of wave physics
Electromagnetic radiation from phones, antennas and radars is absorbed by biological tissue — a quantity measured by the Specific Absorption Rate (SAR), expressed in watts per kilogram. SeaSar acts as a resonant structure worn on the head: its metallic circuit redirects, attenuates and recombines incident fields to reduce the energy deposited in the body's most sensitive region.
Protective waves
The steel–gold–tantalum–hafnium circuit forms a resonant cavity that generates an opposing field, deflecting incident waves away from the skull.
Rebound waves
Through destructive interference, reflected waves cancel part of the incoming signal — the same principle as active noise cancellation.
Photonic waves
Ruby, quartz, amethyst and emerald convert and modulate energy into coherent photonic emissions that stabilize the protective field.
Five SAR contexts
Telecommunications, security, rescue, sciences and military radar: SeaSar addresses every high-exposure environment.
SeaSar — the meaning of the name
Phonetically, "SeaSar" is pronounced like "Caesar" and overlays two evocative roots that capture the spirit of the project: authority and depth.
The crown, the imperial emblem par excellence, embodies mastery and command — here, sovereignty over the waves that surround us.
The sea evokes depth, calm and the unconscious — an enveloping, silent protection, like the great bodies of water that absorb and dissipate energy.
The physics of the SeaSar crown
From material science to crystal optics: understanding how a worn structure can modulate electromagnetic fields.
Sixteen noble and advanced materials, tuned together
Material choice determines the electromagnetic response. Around the founding quartet — stainless steel, gold, tantalum and hafnium — SeaSar combines sixteen materials with complementary properties (noble metals, high-conductivity sterling silver and copper, magnetic mu-metal, dense tungsten, a superconductor, graphene, a metasurface and a composite) to form a circuit that is conductive, capacitive, magnetically shielded, thermally stable and finely tuned.
Provides mechanical rigidity and moderate conductivity. Its surface forms a partial Faraday cage that reflects low-frequency fields and serves as the circuit's ground plane. 316L alloy (Fe-Cr-Ni-Mo), ~1.4 MS/m conductivity and near-unity magnetic permeability so it does not disturb the resonance.
Alchemical heir of iron, the metal of Mars: it embodies willpower, courage and grounding. The warrior's shield par excellence, it repels hostile influences and protects the integrity of the one who wears it.
High conductivity and perfect tarnish resistance. Gold traces carry induced currents with minimal loss (44 MS/m conductivity), optimizing the skin effect — penetration depth ~0.8 µm at 6 GHz.
The metal of the Sun and culmination of the alchemical Great Work. A symbol of perfection, sovereignty and enlightenment, it radiates vitality, attracts abundance and raises consciousness toward its highest expression.
Tantalum forms a highly stable dielectric oxide layer (Ta₂O₅) with high permittivity, creating miniature capacitors that tune the circuit's resonant frequency. Ta₂O₅ has a relative permittivity of ≈ 25 with high dielectric strength.
Named after King Tantalus, it teaches patience and mastery of desire. Esoterically, it helps contain impulses and transmute frustration into perseverance.
A refractory metal with a very high melting point. Its high-k oxide (HfO₂, εᵣ ≈ 25) stabilizes the circuit response under thermal and field variations; melting point 2233 °C.
The fire that does not yield: a symbol of permanence and constancy of the soul. It steadies the being through burning trials and preserves the inner flame without being consumed.
A noble platinum-group metal. Palladium forms low-resistance contact interfaces between gold and steel, absorbs hydrogen and catalyzes charge transfer at the circuit junctions.
Consecrated to Pallas Athena, goddess of wisdom: it awakens discernment and strategy. A catalyst of transformation, it eases transitions and harmonizes opposing energies.
A superconducting metal below 9.2 K, used in RF cavities and SQUIDs. Niobium provides ultra-low-loss resonators and an exceptional quality factor Q for microwave filtering.
Named after Niobe, it governs the transmutation of grief and emotion. A metal of subtle resonance, it lets energy flow without resistance and tunes the soul to its purest frequencies.
A single-atom carbon sheet with the highest known electron mobility. Graphene forms a transparent, flexible shield that absorbs microwaves while remaining nearly weightless.
Pure carbon, the matrix of all life: it symbolizes interconnection and the web of consciousness. Light as thought, it binds beings and ideas into an invisible, living weave.
An artificial array of sub-wavelength resonators. The metasurface bends electromagnetic waves around the head (cloaking effect) and finely tunes the circuit's frequency response.
A structure impossible in nature: it embodies the magic of invisibility and the bending of reality. A true cloak of concealment, it turns gazes and unwanted forces away from the wearer.
A ceramic matrix reinforced with carbon fibers: ultra-stiff, refractory and non-magnetic. It lightens the crown while resisting extreme mechanical and thermal stress.
The union of fire (ceramic) and life (carbon): a symbol of resilience and rebirth. Like the phoenix, it passes through the flames to be reborn stronger, embodying transmutation through ordeal.
With a density of 4.5 g/cm³ — nearly half that of steel — yet comparable strength, titanium becomes the main frame. It drastically reduces the crown's weight while keeping stiffness, biocompatibility and corrosion resistance.
The metal of the Titans, primordial forces older than the gods. It grants superhuman endurance and a bond with telluric powers: a quiet, unalterable strength that supports without ever bending.
A noble metal with high conductivity and complete chemical inertness. Platinum forms electrodes and contact points of exceptional stability, ensuring consistent charge transfer over time.
The alchemists' «little silver», a metal of higher purity and perfect balance between solar and lunar. It anchors constancy, protects oaths and seals intentions over time.
A platinum-group metal with the highest reflectivity and remarkable hardness. A rhodium plating protects the gold traces, maximizes the reflection of rebound waves and resists oxidation.
From the Greek rhodon, the rose: mirror of the soul and shield of light. It returns all negative energy to its sender, acting as a magic mirror that protects by reflecting.
Silver has the highest electrical conductivity of any metal (σ ≈ 62 MS/m pure, ~52 MS/m for the 925 alloy). It minimizes ohmic losses and maximizes reflection of incident waves; the 7.5% copper of the sterling alloy adds mechanical strength.
The metal of the Moon par excellence: it governs intuition, psychism and dreams. An astral mirror and purifier, it protects through the night, reveals the invisible and amplifies mediumistic gifts.
With σ ≈ 59 MS/m and thermal conductivity of 401 W/m·K, copper forms the continuous ground plane and the current distribution buses. It evacuates absorbed energy and provides a low-impedance reference across the whole structure.
The metal of Venus, conductor of the energies of love and healing. It harmonizes fields, warms the heart and circulates the forces of care between body and spirit.
A nickel-iron alloy (~80% Ni) with an extremely high relative permeability (μᵣ up to ~50,000). It channels and absorbs low-frequency magnetic fields (50/60 Hz power lines, transformers) that no purely conductive shield can stop.
A silent guardian that absorbs and diverts underground currents: it weaves a protective cocoon, an inner sanctuary shielded from base influences and subtle pollutions.
An extremely dense (19.25 g/cm³) and refractory (melting 3422 °C) metal. It adds inertial mass and a hard barrier against the most energetic radiation, while keeping a useful conductivity (σ ≈ 18.9 MS/m).
The «wolf» (wolfram) of the old miners: a metal of density and inner gravity. It offers deep grounding and an unshakeable guardian strength, weighting the soul with mineral stability.
A tuned loop antenna worn on the head
The crown's closed circular shape constitutes a resonant loop. Combined with the tantalum and hafnium capacitive elements, it forms an LC circuit whose natural frequency f₀ = 1/(2π√LC) is tuned to interact with the most common radiation bands (GSM 0.7–2.6 GHz, Wi-Fi 2.4/5 GHz, radar). Niobium resonators raise the quality factor Q, sharpening the loop's selectivity, while the metasurface widens the usable band.
- The conductive loop (gold on a steel substrate) acts as the inductance (L); trace thickness is set by the skin depth (~2.4 µm in gold at 6 GHz).
- The dielectric oxides of tantalum (Ta₂O₅) and hafnium (HfO₂), with permittivity εᵣ ≈ 25, provide the capacitance (C) as stable thin films.
- LC resonance sets the frequency f₀ at which the incident field is captured then redirected; tuning C accords the crown band by band.
- Induced currents create, per Lenz's law, a secondary field in phase opposition that attenuates the field beneath the crown.
- Niobium cavities (superconducting < 9.2 K) deliver a very high quality factor Q for low-loss microwave filtering.
- The negative-index metasurface flattens the response and extends coverage toward the millimeter bands (5G/6G).
Two arches crossing over the head
SeaSar is not a simple headband: two metallic arches cross at the top of the skull to form a cross. This three-dimensional geometry maximizes field coverage, closes two orthogonal resonant loops and places sensors at key neurological points. The load-bearing structure in titanium and carbon-ceramic composite keeps the total mass around 115 g.
- Sagittal arch (vertical) — runs front-to-back along the midline of the head and carries the main resonant antenna.
- Coronal arch (horizontal) — rests precisely on the separation line of the prefrontal lobes, where the executive brain is most exposed.
- The two orthogonal loops capture waves regardless of their polarization (polarization diversity), removing shielding blind spots.
- The two arches intersect at the upper junction, creating a circuit node where harvested energy and rebound waves converge.
- The titanium and carbon-ceramic composite frame ensures rigidity, biocompatibility and lightness (~115 g) for prolonged wear.
- The cross distributes mass and contact symmetrically for stable wear and uniform shielding around the skull.
Precious stones as optical modulators
Crystals possess ordered atomic structures capable of piezoelectric effects, luminescence and optical modulation. In SeaSar, each stone is positioned on the circuit to convert a fraction of the captured energy into coherent photonic emissions, helping to stabilize and refine the protective field.
Chromium-doped aluminium oxide crystal — the same material as the first laser. Ruby emits coherent light at 694.3 nm (R1 line) via Cr³⁺ fluorescence. Trigonal crystal system (Al₂O₃:Cr), hardness 9 Mohs, refractive index n≈1.77 — the circuit's reference photonic emitter.
The stone of fire and the Sun: it kindles passion, courage and life force. A talisman of royalty and invincibility, it warms the heart, awakens inner power and wards off dark energies.
The quintessential piezoelectric crystal. Quartz converts mechanical stress into electrical charge and stabilizes frequencies. SiO₂, trigonal system, temperature-stable AT-cut; piezoelectric coefficient d₁₁≈2.3 pC/N and quality factor Q up to 10⁶ — the circuit's reference oscillator.
The master crystal of energy healers: a universal amplifier that clears the mind and purifies spaces. It captures, stores and returns intention, harmonizing every other crystal around it.
A violet variety of quartz: SiO₂ colored by traces of irradiated iron (Fe³⁺), with an absorption band near 545 nm. It retains the piezoelectricity of quartz while re-emitting with a Stokes red-shift, broadening the photonic modulation range.
A stone of sobriety and spiritual wisdom: it calms the mind, shields against psychic influences and opens the third eye. Guardian of sleep and dreams, it raises consciousness toward the divine.
Beryl (Be₃Al₂Si₆O₁₈) colored by chromium and vanadium, hexagonal system, index n≈1.58 and birefringence Δn≈0.006. Its structure modulates light polarization, refining the coherence of the emitted photonic field.
The stone of Venus, jewel of the heart: it nourishes love, compassion and emotional healing. A symbol of hope and renewal, it brings harmony to relationships and clairvoyance of the heart.
A crystal that is both piezoelectric AND pyroelectric: it generates charge under mechanical stress and under temperature change. A complex borosilicate (space group R3m) with a pyroelectric coefficient of ~4 µC/m²·K — it generates charge from just a few millikelvin of thermal change.
A protective shield par excellence, especially the black variety: it dissolves negative energies and grounds them into the earth. It creates a powerful field of protection and keeps body and spirit in balance.
Al₂SiO₄(F,OH), orthorhombic system, hardness 8 Mohs and birefringence Δn≈0.010. Both piezoelectric and pyroelectric, topaz recovers residual mechanical stress and stabilizes the optical phase of the photonic field.
A stone of joy and abundance: it radiates optimism, confidence and generosity. An amplifier of intention, it favors the manifestation of desires and attracts success.
Yttrium iron garnet (YIG) is a real magneto-optical material used in microwave circuits. Y₃Fe₅O₁₂, cubic garnet structure, whose ferromagnetic resonance frequency tunes from 1 to 20 GHz with applied magnetic field (insertion loss < 1 dB). It acts as a circulator and directional filter for captured waves.
The stone of inner fire and regeneration: it revives passion, vitality and courage. A talisman of travelers and protection, it renews energy and strengthens the will to act.
Single-crystal Al₂O₃ with ~40 W/m·K thermal conductivity, transparent from 0.2 to 5 µm and with very low dielectric loss (tanδ < 10⁻⁵). Sapphire recovers and dissipates circuit heat while serving as a stable optical reference.
A celestial stone of wisdom and devotion: it soothes the mind, sharpens intuition and invites inner peace. A symbol of truth and fidelity, it guards against troubled thoughts and attracts blessings.
A golden variety of quartz: SiO₂ colored by iron (Fe³⁺), piezoelectric like quartz. It widens the vibration-harvesting band toward lower frequencies (0.1 Hz – 1 kHz) and enriches the emitted photonic spectrum.
The merchant's stone and stone of the sun: it attracts prosperity, success and abundance. Radiant with solar energy, it dispels melancholy and stimulates creativity and self-confidence.
Crystalline carbon with the highest known thermal conductivity (~2000 W/m·K) and the widest optical transparency window. Cubic carbon (Fd3m space group), 5.5 eV band gap, transparent from 180 nm to 25 µm. Diamond instantly drains heat from the circuit and serves as an optical window for UV → infrared photonic emissions.
The stone of absolute light and invincibility: a symbol of purity, eternity and perfection. A supreme amplifier, it clarifies intention, seals unions and radiates an unalterable strength.
A natural photonic crystal: SiO₂·nH₂O whose lattice of silica micro-spheres (~150–400 nm) produces Bragg diffraction tuned to the visible range (play of color). Opal acts as a photonic band-gap filter, selecting and redirecting precise wavelengths.
The stone of visions and magic: it awakens imagination, creativity and intuitive gifts. A mirror of emotions, it amplifies feelings and opens the doors to subtle worlds.
Magnesium aluminate (MgAl₂O₄), a solid-state laser host material. Cubic spinel structure, hardness 8 Mohs. Chromium-doped (Cr³⁺), spinel emits coherent fluorescence near 685 nm and acts as a saturable absorber for laser Q-switching, reinforcing the stability of the photonic beam.
A stone of revitalization and inspiration: it renews depleted energy and rekindles enthusiasm. It encourages perseverance, dispels anxiety and restores the drive to begin anew.
Stone frequency & specification table
Each gem is tuned to a specific band. The circuit combines these responses to cover the spectrum from DC to optical.
| Stone | Physical effect | Frequency / Wavelength | Band covered | Role in the circuit |
|---|---|---|---|---|
| Ruby | Stimulated emission (laser) | 694 nm · 432 THz | Optical (red) | Reference coherent photonic emitter |
| Quartz | Piezoelectric | 32.768 kHz – 100 MHz | RF / oscillator | Reference oscillator, phase stabilization |
| Amethyst | Luminescence | 380 – 700 nm | Optical (violet) | Broadens the modulation band |
| Emerald | Polarization modulation | 500 – 560 nm | Optical (green) | Refines beam coherence |
| Tourmaline | Piezo + pyroelectric | 1 Hz – 30 kHz | Vibration / thermal | Harvests heat and vibrations |
| Topaz | Piezo + pyroelectric | 1 kHz – 5 MHz | Mechanical / optical | Optical phase stabilization |
| Garnet (YIG) | Magneto-optical | 1 – 20 GHz | Microwave | Circulator and directional filter |
| Sapphire | Thermal conduction | 200 nm – 5 µm | Broadband optical | Heat dissipation, optical reference |
| Citrine | Piezoelectric | 0.1 Hz – 1 kHz | Low frequency | Low-frequency vibration harvesting |
| Diamond | Thermal / optical conduction | 180 nm – 25 µm | UV → far infrared | Optical window & heat sink |
| Opal | Photonic crystal (diffraction) | 400 – 700 nm | Optical (visible) | Photonic band-gap filter |
| Spinel | Laser fluorescence (Cr³⁺) | 685 nm · 438 THz | Optical (red) | Laser host material, beam stability |
What the stones recover — and feed back
Beyond modulation, each gem acts as a micro energy-harvester. The circuit collects these fractions of ambient energy and feeds them back to self-sustain the protective field, reducing dependence on any external source.
Head movement, speech and micro-vibrations deform the crystals, which generate an exploitable electrical charge.
The temperature gradient between the skull and ambient air induces a voltage in the pyroelectric crystals.
The metallic loop captures part of the surrounding RF radiation and rectifies it into DC, instead of letting it be absorbed by tissue.
Light absorption and re-emission by the gems powers the circuit's coherent photonic emitters.
Voice, ambient noise and mechanical vibrations conducted through the skull bone make the crystals resonate, turning these sound waves into electrical charge.
Low-frequency magnetic fields from power grids (50/60 Hz) and motors induce a current in the ferromagnetic loop — captured rather than endured.
Infrared radiation emitted by the body is absorbed and re-emitted at a usable wavelength, powering the coherent photonic emitters.
Friction of hair, textiles and air on the noble surfaces generates triboelectric charges that the circuit collects and stores.
Higher-energy ultraviolet photons are absorbed by the gems and converted into coherent visible emission, widening the harvesting window toward the top of the spectrum.
Sending light into the stones — one wave per function
To drive each stone, SeaSar does not rely on ambient radiation alone: an integrated optical-pumping system actively sends calibrated light into every gem. The injected wavelength is chosen to exactly match the wave the function must produce — following E = h·f and Bragg's law, each color excites the intended crystal transition.
Micro-photonic sources
Miniature micro-LEDs and laser diodes embedded in the frame generate stable monochromatic beams — one source per useful band.
Fiber routing
Bare optical fibers guide each beam to the heart of its matching gem, with no loss or crosstalk between channels.
Wavelength ↔ function tuning
Each channel's wavelength is tuned to the crystal transition (fluorescence, Bragg diffraction, modulation) so the emitted wave precisely matches the targeted function.
Feedback loop
A sensor reads the stone's actual emission and adjusts intensity in real time, guaranteeing an output wave that matches the setpoint.
Generating oxygen from light
Beyond electromagnetic protection, SeaSar explores a vital function: producing oxygen on demand from sunlight alone. An embedded oxidizing crystal decomposes under UV photons and releases dioxygen (O₂) — a controlled photolysis, designed around safety from the very start.
The photons hν — mainly ultraviolet — break the O–O bond of the peroxide, releasing oxygen while leaving only water as a by-product.
General principle
Oxidizing crystal
An oxygen-rich crystal (peroxide, chlorate or percarbonate) acts as a solid reservoir, stable as long as it is not exposed to active light.
Sunlight
Solar radiation provides UV and visible photons (hν): the energy source that triggers the reaction, with no electricity or external heat.
Breaking the O–O bond
The photonic energy breaks the crystal's oxygen–oxygen bond, initiating its controlled decomposition.
O₂ release
The crystal decomposes and releases gaseous dioxygen, recovered by a micro gas circuit — with water as the only residue.
Because a solid oxidant remains a sensitive material, SeaSar favors stabilized peroxides in small quantities, confined in an inert matrix, with active thermal dissipation and sealed gas recovery. The goal: a gentle, gradual and fully controlled release of oxygen.
The Specific Absorption Rate and its five contexts
SAR measures the electromagnetic energy absorbed by tissue, in W/kg. SeaSar is designed to reduce this absorption across five critical environments.
What is SAR?
The Specific Absorption Rate quantifies the electromagnetic power absorbed per unit mass of tissue (W/kg). Regulatory limits are set at 2 W/kg (Europe, over 10 g of tissue) and 1.6 W/kg (United States, over 1 g). SeaSar aims to reduce residual SAR at the head well below these thresholds.
Telecommunications
Mobile terminals emit in immediate proximity to the skull. SeaSar interposes a resonant loop tuned to cellular bands (700 MHz – 3.5 GHz) and Wi-Fi (2.4 / 5 GHz) to deflect incident energy.
Security & Surveillance
Security personnel are continuously exposed to gates, RFID readers and surveillance systems. SeaSar attenuates cumulative exposure over long working days.
Search & Rescue
Rescue teams use high-power radios near the head. The crown reduces absorption while preserving the communication quality essential to operations.
Sciences & Research
Researchers working near RF emitters, microwave generators or imagers experience intense fields. SeaSar offers portable, non-intrusive protection in the lab.
Radar & Military
Radar operators work alongside very high-power emitters. The steel–hafnium circuit, temperature-stable and refractory, suits radar bands (1–18 GHz) and extreme conditions.
The SeaSar Scepter — choose your function
A companion to the crown, the scepter gathers the stones in its pommel to select the desired function with a single touch. At its heart, the red ruby commands all-power.
A companion to the crown, the scepter gathers the stones in its pommel to select the desired function with a single touch. At its heart, the red ruby commands all-power.
The pommel is a quartz sphere — the reference oscillator — on which the function gems are set. The central ruby, the all-power button, unifies and amplifies every wave.
SAR shield
Reinforces electromagnetic shielding and heat evacuation from the circuit.
Field coherence
Refines the polarization and coherence of the protective photonic field.
Energy harvesting
Maximizes ambient energy harvesting and feedback into the circuit.
Neural soothing
Modulates low frequencies for a soft, soothing field envelope.
Phase stabilization
Locks the optical phase of the field and stabilizes circuit oscillations.
Window & dissipation
Opens a broadband optical window and instantly evacuates heat.
The equations that govern SeaSar
Every protection and harvesting mechanism rests on a precise physical law. From the specific absorption rate to the total energy grouped by the whole stone + metal assembly.
Targeted frequency bands
Wavelength λ = c/f and photon energy E = hf for the main communication bands. All remain in the non-ionising domain (E ≪ 12.4 eV, the molecular ionisation threshold).
| Band | Frequency | Wavelength λ | Photon energy E | Use |
|---|---|---|---|---|
| GSM 900 | 880–960 MHz | ~333 mm | ~3.7 µeV | 2G / voice |
| GSM / LTE 1800 | 1.71–1.88 GHz | ~167 mm | ~7.4 µeV | 2G / 4G |
| Wi-Fi / BT 2.4 | 2.40–2.48 GHz | ~125 mm | ~9.9 µeV | Wi-Fi / Bluetooth |
| 5G n78 | 3.3–3.8 GHz | ~86 mm | ~14 µeV | 5G mid-band |
| Wi-Fi 5 / 6 | 5.15–5.85 GHz | ~60 mm | ~21 µeV | Wi-Fi 5 GHz |
| Radar X | 8–12 GHz | ~30 mm | ~41 µeV | Radar / satellite |
| Radar Ku | 12–18 GHz | ~20 mm | ~62 µeV | SATCOM |
A broad field of use
From everyday use to extreme professional environments, SeaSar adapts to every electromagnetic exposure situation.
Everyday use
Passive, permanent protection during intensive use of smartphones, wireless headsets and laptops.
Telecom professionals
Antenna technicians, 5G installers and network operators exposed to high-power emitters.
Data centers
Personnel working near dense wireless infrastructure and server farms.
Medical staff
MRI, diathermy and electrosurgery operators exposed to RF fields.
Rescue teams
Firefighters, paramedics and radio operators in prolonged interventions with communication equipment.
Aviation & maritime
Crew exposed to navigation radar and high-frequency communication systems.
Scientific research
Physicists and engineers working with accelerators, plasmas and microwave generators.
Defense & radar
Operators of radar stations, electronic warfare systems and surveillance platforms.
Gamers & VR
Users of VR/AR headsets and wireless peripherals worn for long hours in direct contact with the skull.
Students & remote work
Prolonged exposure to laptops, home Wi-Fi routers and daily video calls.
Electric vehicles
Drivers and passengers exposed to the fields of batteries, motors and fast-charging stations.
Smart home & IoT
Environments saturated with connected devices, voice assistants, smart meters and mesh networks.
Industry 4.0 & private 5G
Operators of automated factories with private 5G networks, robots and induction welding.
Aerospace & satellite
Control-center staff, ground stations and high-power emitter test benches.
Astronauts & crewed flight
In-cabin protection against onboard-system fields and the intense electromagnetic radiation of space.
Pregnant women & infants
Reduced RF exposure in saturated home environments, for the most sensitive populations.
Electro-hypersensitive (EHS)
Passive relief for people reporting sensitivity to electromagnetic fields in dense urban areas.
Athletes & cognitive performance
Athletes and biohacking enthusiasts seeking to limit exposure during training, recovery and sleep.
High-voltage technicians
Electricians and substation / high-voltage line operators exposed to intense low-frequency fields.
6G & terahertz labs
Researchers developing 6G communications, terahertz imaging and millimeter-wave generators.
Key features
Characteristics & materials
Detailed technical data for the SeaSar crown, from constituent materials to the frequency ranges covered.
Technical parameters
| Parameter | Value |
|---|---|
| Frequency range covered | 700 MHz – 18 GHz |
| Main bands | GSM, LTE, 5G, Wi-Fi, radar S/C/X |
| Photonic coverage | 380 nm – 5 µm (UV → infrared) |
| SAR reduction target | > 60% (modeled) |
| Modeled peak attenuation | −18 dB at resonance |
| Quality factor Q (cavity) | ~120 |
| Opposing-field response time | < 1 µs |
| Energy-harvesting sources | 6 (mechanical, thermal, RF, light, magnetic, tribo) |
| Metals & materials combined | 16 (noble metals, sterling silver, copper, mu-metal, tungsten…) |
| Active gems | 12 tuned stones |
| Power supply | None — passive resonant, self-powered |
| Mass | ~115 g (titanium frame) |
| Adjustable diameter | 54 – 62 cm |
| Operating temperature | −20 °C to +120 °C |
| Humidity range | 5 – 95% RH non-condensing |
| Protection rating | IP54 |
Physical properties of the materials
Reference values at 20 °C used in the circuit model (skin depth computed at 1 GHz).
| Material | Density (g/cm³) | Conductivity σ (MS/m) | Permittivity εᵣ | Melting (°C) | Skin @1 GHz |
|---|---|---|---|---|---|
| 316L stainless steel | 8.0 | 1.4 | — | 1400 | 13.5 µm |
| Gold (Au) | 19.3 | 44 | — | 1064 | 2.4 µm |
| Tantalum (Ta) | 16.7 | 7.7 | 25 (Ta₂O₅) | 3017 | 5.7 µm |
| Hafnium (Hf) | 13.3 | 3.3 | 25 (HfO₂) | 2233 | 8.8 µm |
| Palladium (Pd) | 12.0 | 9.5 | — | 1555 | 5.2 µm |
| Niobium (Nb) | 8.6 | 6.6 | — | 2477 | 6.2 µm |
| Graphene | 2.27 | ≈100 | — | ~3650 (subl.) | — |
| Metasurface | — | — | < 0 (neg. index) | — | — |
| C-ceramic composite | 2.0 | ≈0 | — | > 1600 | — |
| Titanium (Ti) | 4.5 | 2.4 | — | 1668 | 10.3 µm |
| Platinum (Pt) | 21.5 | 9.4 | — | 1768 | 5.2 µm |
| Rhodium (Rh) | 12.4 | 23 | — | 1964 | 3.3 µm |
| Sterling silver (Ag 925) | 10.3 | 52 | — | 893 | 2.0 µm |
| Copper (Cu) | 8.96 | 59 | — | 1085 | 2.1 µm |
| Mu-metal (Ni-Fe) | 8.7 | 1.6 | μᵣ≈50,000 | 1450 | — |
| Tungsten (W) | 19.25 | 18.9 | — | 3422 | 3.7 µm |
Principles & compliance
Lenz's law & induction
The opposing field relies on the fundamental electromagnetism laws of Faraday and Lenz.
ICNIRP framework
Designed with reference to ICNIRP guidelines and regulatory SAR limits (2 W/kg / 1.6 W/kg).
Biocompatible materials
316L steel and 24k gold, inert materials used in medical applications.
Scientific references
The physical principles, metal properties and optical behaviour of the stones draw on the reference literature in electromagnetics, materials science, metallurgy and mineralogy.
Electromagnetic foundations & dosimetry
Metals & conductive materials
Gemstones & photonics
SeaSar is a demonstration concept: the values shown illustrate the cited physical laws and do not constitute a medical claim.
Request a technical dossier
Are you a researcher, engineer or professional? Contact the SeaSar team for a scientific exchange or a detailed dossier.