FemtoSci has developed several variations of accelerometers using our unique and inexpensive diamond deposition technology.

Three-Axis Diamond-Based Accelerometer

FemtoSci has developed a MEMS 3-Axis diamond-based accelerometer {pat. pending) with a deposited diamond layer sandwiched between two glass plates which serve as motion stops and protection. This device is produced using MEMS wafer fabrication techniques producing thousands at a time. This device can be easily tailored for various acceleration ranges typically from fractions of a G up to the range of 10kG to 30kG. The assembly can be packaged in various configurations to accommodate a wide variety of applications.

FemtoSci has developed a diamond-based force-balanced accelerometer with wide dynamic range extending from microG's to hundredss of G's with applications for IMUs for high radiation, temperature and other environmental extremes.

FemtoSci has successfully fabricated active electronic components—including diodes and triodes—utilizing our proprietary diamond-based technology. These components function as current control devices analogous to conventional transistors but with superior performance characteristics in extreme environments.

Scanning Electron Microscope Image of Lateral Vacuum Electron Emission "Transistor" Device

Our diamond-based devices maintain operational stability at temperatures exceeding 500°C with negligible performance degradation. This exceptional thermal tolerance is achieved through a fundamental operational mechanism where electron transport occurs through vacuum or intrinsic diamond rather than semiconductor material.

This same mechanism provides comprehensive radiation hardness against both cumulative radiation exposure (total dose) and instantaneous high-intensity radiation events (gamma dot/transient pulse radiation).

These characteristics make our diamond-based active devices ideal for mission-critical applications in aerospace, defense, nuclear, and deep-drilling operations where conventional semiconductor technologies reach their operational limits.

FemtoSci's advanced CVD diamond capacitor technology delivers exceptional performance in high-radiation and high-temperature applications. Leveraging diamond's 10 MV/cm breakdown strength, our capacitors achieve >80 kV voltage ratings and >2 J/cm³ energy densities in compact packages.

These devices maintain excellent thermal stability (10 ppm/°C) with sub-400ns charge-discharge capabilities across thousands of operational cycles. Our proprietary electrode metallurgy and packaging ensure reliable performance in launch vehicles, spacecraft re-entry systems, and radiation-intensive environments where other capacitors fail.

The semiconductor industry's progression toward 2.5D and 3D integrated circuit configurations presents significant challenges for thermal management and electromagnetic interference (EMI) control. As IC chips are vertically stacked, heat dissipation pathways become increasingly restricted while inter-layer signal interference intensifies.

Stylized Image of an Interposer between Chiplet Devices

FemtoSci has developed a comprehensive solution addressing both issues simultaneously through our diamond interposer technology with integrated EMI shielding. This innovation leverages diamond's exceptional material properties—including its industry-leading thermal conductivity and superior dielectric breakdown strength—while incorporating strategically positioned conductive elements to provide electromagnetic isolation between layers.

Our diamond interposer technology enables semiconductor manufacturers to overcome the fundamental physical limitations that have traditionally constrained 3D integration, delivering a cost-effective solution that maintains signal integrity while efficiently managing thermal loads in densely packed electronic assemblies.

FemtoSci has developed, produced, and patented proprietary functionalized nanodiamond additives that significantly enhance the performance of industrial fluids and composite materials. Our transformer oil additive technology delivers over 25% improvement in thermal conductivity at concentrations below 100 PPM, resulting in reduced operating temperatures, extended equipment lifespan, and improved operational safety.

For structural applications, our nanodiamond concentrates dramatically improve the mechanical properties of thermosetting resins, epoxies, and polymer-based materials. Progressive performance enhancements are clearly demonstrated with increasing nanodiamond concentration (0.6% to 1.2%), while maintaining excellent processing compatibility.

These same materials also exhibit enhanced thermal conductivity at minimal additive concentrations, providing multifunctional benefits from a single solution.

The exceptional performance of our nanodiamond technology stems from our proprietary deaggregation and functionalization processes, which ensure optimal dispersion and integration within host materials while preserving diamond's inherent thermal and mechanical properties.

Graphite capacitor plates internal to diamond produced by pulsed laser

Diamond has the highest dielectric breakdown strength (30 MV/cm) and highest thermal conductivity (2000 W/mK) of known materials. Advanced high voltage capacitors (> 80 kV), high energy density (> 2 J/cm3) utilizing chemical vapor deposition (CVD) diamond in conjunction with a robust electrode metallurgy and packaging have been achieved.

These capacitors will achieve a temperature coefficient of capacitance of 10 ppm/°C, and are capable of rapid charging and discharging (< 400 ns) over thousands of cycles.

Diamond-based resistors operate reliably at temperatures exceeding 500°C — far beyond silicon's 150°C limit. Their wide bandgap (5.5 eV) and exceptional thermal conductivity (5× better than copper) make them ideal for high-temperature, high-power applications.

Diamond resistors on an aluminum nitride substrates pictured relative to a dime.

FemtoSci's specialized CVD (chemical vapor deposition) techniques produce polycrystalline diamond films with electrical properties comparable to single-crystal diamond at lower cost. These can be precisely patterned into resistor arrays with tailored values.

Diamond's strong C-C sp3 bond structure also provides outstanding radiation hardness, making these components virtually immune to displacement damage from particle radiation — critical for aerospace, nuclear, and military applications where conventional electronics can be more susceptible to failure.

FemtoSci's diamond-based accelerometer technology provides unprecedented reliability for vibration monitoring in harsh industrial environments. Our sensors maintain precise measurement capabilities at temperatures exceeding 500°C and in high-radiation conditions where conventional silicon-based devices fail.

By continuously monitoring the vibration signatures of motors, generators, and bearing assemblies, our technology enables predictive maintenance strategies that significantly reduce downtime and prevent catastrophic equipment failures.

The exceptional stability and durability of our diamond accelerometers deliver consistent measurement accuracy throughout extended deployment periods without requiring frequent recalibration or replacement.

TEC is based on the widely understood physical principal of thermionic emission which describes the thermal emission of electrons from a heated cathode, relative so the anode, as shown here in a figure from patent no. 10,658,164.

FemtoSci has pioneered breakthrough technology in thermionic energy conversion (TEC), secured by two foundational patents (US 10,373,812 and 10,658,164). Our diamond-based energy conversion system leverages diamond's exceptional electron emission properties at elevated temperatures to generate significant electrical current with remarkable efficiency.

Operating at temperatures around 800°C, our TEC technology achieves direct thermal-to-electrical energy conversion at efficiencies that surpass conventional photovoltaic systems. This makes it ideal for capturing energy from concentrated solar applications, industrial waste heat recovery in foundries and metal processing facilities, and advanced nuclear energy systems.

The exceptional thermal stability of diamond enables our devices to maintain reliable operation in extreme temperature environments while providing a scalable, sustainable solution for converting previously untapped heat sources into valuable electrical power.