Next 2DCC Webinar:
Thursday February 25, 2021
1:00-2:00pm
Probing the first layer of atoms: manipulating and observing matter in nanoscale self-organized systems
Jean Paul Allain, Penn State University
Deciphering self-organization mechanisms of nanostructures (e.g. nanodots, ripples) and low-dimensional state systems (e.g. 2D materials, ultrathin films, etc...) on complex materials (i.e. compound semiconductors [1], alloys, metallic glass [2]) via low-energy ion beam irradiation is critical to manipulate functionality in nanostructured systems. By operating at ultra-low energies near the damage threshold, irradiation-driven defect engineering can be optimized (e.g. 10-500 eV). Tunability of optical, electronic, magnetic and nuclear detection properties is realized by reaching metastable phases controlled by irradiation. This talk summarizes emerging research that exploits irradiation-driven materials modification with applications in: nanophotonics, nanoelectronics, biomaterials and nuclear detection. Furthermore advances of in-situ analysis conducted during modification to correlate tunable irradiation synthesis and device performance will be summarized [3].
[1] M Lively et al. Sci. Reports 10, (2020) 8253
[2] P. Luo et al. ACS Appl. Nano Mater 3, 12 (2020) 12025
[3] J.P. Allain and A. Shetty, J. Phys. D: Appl. Phys. 50, 28 (2017) 283002
