Project Team
Students
Sadiq Alli
Computer Science
Penn State Altoona
Faculty Mentors
Kofi Adu
Penn State Altoona
Physics
Ramakrishnan Rajagopalan
Penn State University Park/Penn State DuBois
Engineering Science and Mechanics
Project
Project Video
Project Abstract
Two-dimensional (2D) materials, namely Graphene, Molybdenum Disulfide (MoS2), and Tungsten Disulfide (WS2), has garnered significant interest due to their unique electronic, and optical properties. This abstract presents a comprehensive overview of our synthesis method employed to produce these quantum dotsand highlights their potential applications in cutting-edge technologies.
Graphene, a single layer of carbon atoms arranged in a honeycomb lattice, was synthesized using the laser-induced forward transfer (LIFT METHOD). LIFT involves the use of a laser pulse to transfer material from a donor target into a liquid medium such as water or ethanol. In the case of Graphene, the laser pulse ablates a Graphene-coated material, and the resulting material is propelled into a liquid, where a monolayer or few-layer Graphene particles are deposited. This approach allows for the creation of the Graphene quantum dots which have excellent electronic properties, making it promising for various electronic and optoelectronic applications.
Similarly, LIFT is utilized for the synthesis of MoS2 and WS2 by using the target of the layered materials. Upon laser irradiation, MoS2 or WS2 is transferred to the receiving liquid, resulting in the formation of high-quality quantum dots. Allowing the production of quantum dots for advanced electronic and sensing devices.
We explore the absorption data of these quantum dots after they have been sonicated. They are then tested in the UV-vis spectrometer to obtain the amount of light absorbed by the quantum dots, which we will then use to find the optical application.
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