Publications by authors named "Shany Z Cohen"
Topological insulators are materials characterized by an insulating bulk and high mobility topologically protected surface states, making them promising candidates for future optoelectronic and quantum devices. Although their electronic properties have been extensively studied, their mid-infrared (MIR) properties and prospective photonic capabilities have not been fully uncovered. Here, we use a combination of far-field and near-field nanoscale imaging and spectroscopy to study chemical vapor deposition-grown BiSe nanobeams (NBs).
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- Thermal effects significantly impact the electronic and optical properties of materials, which is crucial for the functionality of various optoelectronic devices, particularly through the thermo-optic (TO) effect.
- * The TO effect, indicating how refractive index changes with temperature, poses challenges for devices needing stable performance as it can cause shifts in resonance frequency, amplitude, or phase due to temperature variations.
- * This study presents a method using hybrid subwavelength resonators made from two materials with opposite TO dispersions, achieving a zero effective TO coefficient and leading to temperature-invariant performance in nanophotonic devices, enabling consistent optical responses across various temperatures.