The proximity of nanostructures or metallic films to semiconductors significantly affects their properties, particularly optical ones. First, we will describe the strong light–matter coupling between organic semiconductors (J-aggregate molecules) and a surface plasmon mode. We will specifically discuss the collective effects between different molecules induced by light–matter hybridization. By structuring the material on the scale of the coherent mode extension, we will show that it is possible to create an original type of active polaritonic metasurface, as well as to achieve efficient energy transfer. In a second part, we will address structures composed of metals and inorganic semiconductors (gallium arsenide). The potential applications of these structures for the realization of surface lasers will be described.
Abhishake MONDAL (Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore)
Abstract :
The pursuit of smart multifunctional materials with stimuli-responsive magnetic and optical response has drawn escalating interest in both fundamental science and potential applications to switches, sensors, and intelligent devices.1 One of the appealing feature of such materials is the tunability of their physical property via chemistry, where the linking structure and physical properties can be modulated in practically infinite ways, which gives them an edge over the solid-state magnetic materials (Figure 1, a).2 The field of molecular bistable systems is rapidly budding towards utilizing these molecule-based magnetic materials in physics-driven and nanotechnology-driven fields (Figure 1, b).
Figure 1: a) Stimuli-responsive molecular bistable systems and b) Application areas where these systems are actively studied for developing devices
Here, I will briefly cover the exciting field of Molecular Magnetism and will specifically focus on three most important aspects of Molecular Magnetism being pursued in my laboratory i) Spin Crossover (SCO) materials3 ii) Metal-to-Metal Electron Transfer Systems (MMET)4 and iii) Single Molecule Magnets (SMM).5 Lastly, I shall discuss the application of these bistable systems in developing ring-resonator devices for Photonics Application, molecular break junctions and microelectromechanical systems.
Acknowledgments: I thank the Indian Institute of Science (IISc), Bangalore, India, and the Ministry of Human Resource Development (MHRD), Ministry of Education (MoE), Government of India, IISc-Start-up Research Grant, the Department of Science and Technology, Mission on Nano Science and Technology (Nano Mission), Scheme for Transformational and Advanced Research in Sciences (STARS, MHRD), Council of Scientific and Industrial Research (CSIR) for the research fundings.
This workshop is organised with the support of CEFIPRA, the French and Indian Ministries of Foreign Affairs and the ITI QMAT.
Around twenty oral presentations are scheduled. Speakers have been selected from both academia and industry. We will be discussing aspects relating to these materials, their fundamental properties and their applications, particularly in the field of memory and information echnologies.
The workshop is open to all, and free of charge. For organisational reasons, please let me know before 26 June noon of your participation by email ( dayen@unistra.fr ).
