Surface-Enhanced Raman Scattering Substrates Based on Nitride Thin Films
Summary
Surface-enhanced Raman scattering (SERS) substrates based on nitride thin films have emerged as a robust and cost-effective alternative to noble-metal platforms. Transition metal nitrides such as titanium nitride (TiN), zirconium nitride (ZrN) and hafnium nitride (HfN) combine metallic conductivity with ceramic durability, enabling strong plasmonic resonances in the visible to near-infrared range. Thin-film deposition techniques—ranging from reactive magnetron sputtering to glancing-angle physical vapour deposition—allow precise control of film thickness, composition and nanostructure. By tuning grain size, texture and surface morphology, researchers achieve high densities of electromagnetic “hot spots” and enhancement factors comparable to or exceeding those of gold and silver. These nitride substrates exhibit superior thermal and chemical stability, long-term recyclability and compatibility with silicon technologies, making them attractive for environmental sensing, bioanalysis and security screening.
Research from Nature Portfolio
Recent studies have demonstrated the design of branched titanium nanorod arrays fabricated by glancing-angle deposition. Annealing in a nitrogen atmosphere reduces surface oxidation and preserves plasmonic activity, while a thin silver overcoat further amplifies localised fields. The hybrid Ti–Ag nanorods yield a Raman signal enhancement approximately 37-fold higher than untreated titanium alone, maintain thermal and chemical stability, and integrate readily with silicon-based electronics. This work provides a scalable route to thermally robust, high-sensitivity SERS sensors.
Surface-Enhanced Raman Scattering Substrates Based on Nitride Thin Films publication trend
The graph below shows the total number of articles in surface-enhanced raman scattering substrates based on nitride thin films across all publications each year (not limited to Nature Index journals).
Technical terms
Surface-Enhanced Raman Scattering (SERS): A technique that amplifies Raman signals via intensified electromagnetic fields at nanostructured surfaces.
Localised Surface Plasmon Resonance (LSPR): Collective oscillation of conduction electrons in nanoscale materials that concentrates light into subwavelength volumes.
Enhancement Factor (EF): A dimensionless measure of the amplification of Raman scattering intensity by a SERS substrate.
Transition Metal Nitride (TMN): A class of refractory compounds combining metallic and ceramic properties, used for robust plasmonic applications.
References
- General Synthesis of Large‐Area Transition Metal Nitride Porous Arrays for Highly Sensitive Surface‐Enhanced Raman Scattering Substrates with Ultrahigh Durability. Small Structures (2023).
- Reusability, Long‐Life Storage and Highly Sensitive Zirconium Nitride (ZrN) Surface‐Enhanced Raman Spectroscopy (SERS) Substrate Fabricated by Reactive Gas‐Timing Rf Magnetron Sputtering. Advanced Materials Interfaces (2023).
- Tailoring Properties of Hafnium Nitride Thin Film via Reactive Gas-Timing RF Magnetron Sputtering for Surface Enhanced-Raman Scattering Substrates. Crystals (2022).
- Design of high SERS sensitive substrates based on branched Ti nanorods. Scientific Reports (2022).
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