Study of high order plasmonic modes on ceramic nanodisks

Area of Science:

• Materials Science
• Nanotechnology
• Optics

Background:

• Noble metals like gold are standard plasmonic materials.
• Transition metal nitrides offer comparable plasmonic properties and higher thermal stability.
• Plasmonic materials are crucial for advanced data storage technologies.

Purpose of the Study:

• To investigate the plasmonic resonances of titanium nitride (TiN) nanodisk arrays.
• To evaluate TiN as an alternative to gold for plasmonic enhanced magnetic recording.
• To compare the performance of TiN and gold nanodisks in near-field transducer designs.

Main Methods:

• Angle-dependent spectral measurements of TiN nanodisk arrays.
• Excitation of plasmonic modes using polarized light.
• Numerical simulations comparing gold (Au) and TiN nanodisks.

Main Results:

• TiN nanodisks exhibit localized surface plasmon resonances.
• TiN transducers show high electric field enhancement at longer wavelengths compared to Au.
• TiN demonstrates superior performance for specific plasmonic transducer designs.

Conclusions:

• Titanium nitride is a promising plasmonic material for data storage applications.
• TiN's high melting temperature and plasmonic characteristics make it suitable for demanding applications.
• TiN offers a viable alternative to noble metals in near-field transducer technology.