{'fraction_non_alphanumeric': 0.021538461538461538, 'fraction_numerical': 0.008205128205128205, 'mean_word_length': 5.684931506849315, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Mechanisms of Spontaneous Emission Rate Enhancement in Metal-Insulator-Metal Cavities

The emergence of metal-insulator-metal (MIM) has offered plethora of applications in various field of photonics owing to its simplicity and versatile nature. Tailoring the emission and radiation properties of an emitter is of fundamental importance in the perspective of novel photonic devices for emerging photonic applications [1] , [2] . Here, in this study we demonstrate 260-folds of photoluminescence enhancement along with tunable lifetime of LDS798 fluorescent dye by integrating with MIM nanocavity. Interestingly, the integration of dye with MIM nanocavity exhibits a unique pathway to engineer the emission properties not only by Purcell factor rather through enhancing the excitation rate. The structural simplicity and tunable optical properties of such hybrid system would provide more efficient, lithography free and low-cost photonic devices with advanced functionalities.