Challenges in realizing ultraflat materials surfaces

Autor: Wataru Nomura, Fabrice Stehlin, Takashi Yatsui, Makoto Naruse, Olivier Soppera, Motoichi Ohtsu
Jazyk: angličtina
Rok vydání: 2013
Předmět:
Zdroj: Beilstein Journal of Nanotechnology, Vol 4, Iss 1, Pp 875-885 (2013)
Beilstein Journal of Nanotechnology
ISSN: 2190-4286
Popis: Ultraflat surface substrates are required to achieve an optimal performance of future optical, electronic, or optoelectronic devices for various applications, because such surfaces reduce the scattering loss of photons, electrons, or both at the surfaces and interfaces. In this paper, we review recent progress toward the realization of ultraflat materials surfaces. First, we review the development of surface-flattening techniques. Second, we briefly review the dressed photon–phonon (DPP), a nanometric quasiparticle that describes the coupled state of a photon, an electron, and a multimode-coherent phonon. Then, we review several recent developments based on DPP-photochemical etching and desorption processes, which have resulted in angstrom-scale flat surfaces. To confirm that the superior flatness of these surfaces that originated from the DPP process, we also review a simplified mathematical model that describes the scale-dependent effects of optical near-fields. Finally, we present the future outlook for these technologies.
Databáze: OpenAIRE