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Innovative Quantum Dot Monitoring: Real-Time Insights Into Nanoparticle Growth
Researchers monitored the diameter of semiconductor quantum dots in real time by observing the wavelength of the emitted light.
Luminescence is the outcome of a process where an object absorbs light at one wavelength and re-emits it at a different wavelength. During this process, electrons in the material’s ground state absorb light and become excited to a higher energy state. After a specific period, unique to each excited state, the electrons return to lower energy states, including the ground state, and emit light. This phenomenon is utilized in a wide range of technological applications, involving highly efficient and reproducible emitting devices that can be easily miniaturized.
The materials with the highest luminescence efficiency include quantum dots (QDs), currently used in high-resolution displays, LEDs, solar panels, and sensors of various kinds, such as those used for precision medical imaging. Functionalization of the surface of QDs with various types of molecules permits interaction with cellular structures or other molecules of interest for the purpose of investigating molecular-level biological processes.
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