The properties of quantum dots (QDs) are determined by various factors, including size, shape, composition, and structure, such as whether they ... significant efforts were required to improve basic ...
Argonne scientists have unveiled new methods for controlling material properties. The breakthrough enables researchers to ...
Quantum dot FP lasers have an ensemble of self-assembled QDs inside the cavity as shown in Fig. 1.By simply modulating the laser's injection current, the laser emits a stream of digital data bits ...
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Heavy-metal-free quantum dots enable high-speed, eye-safe LIDAR breakthroughLIDAR is a system that calculates distances using laser pulses, similar to how SONAR uses sound waves. SWIR waves are unique ...
However, a key problem with most modern lasers is that they emit light at fixed wavelengths. This limitation can be overcome using quantum dots, nanoscale semiconductors that can emit light of ...
An international team has merged two lab-synthesized materials into a synthetic quantum structure once thought impossible to exist and produced an exotic structure expected to provide insights that ...
Argonne researchers have shown that they can use light to temporarily alter the crystal symmetry within lead sulfide quantum dots. This process reduces the off-centering of lead atoms and affects the ...
Associate Professor Jia said the researchers achieved this by fine-tuning the structure of the quantum dots at an atomic level, reducing defects that can interfere with light emission.
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