Subwavelength modulational instability and plasmon oscillons in nanoparticle arrays

We study modulational instability in nonlinear arrays of subwavelength metallic nanoparticles, and analyze numerically nonlinear scenarios of the instability development. We demonstrate that modulational instability can lead to the formation of regular periodic or quasi-periodic modulations of the polarization. We reveal that such nonlinear nanoparticle arrays can support long-lived standing and moving oscillating nonlinear localized modes - plasmon oscillons.Comment: 5 pages, 5 figures, published in Physical Review Letter

Subwavelength plasmonic kinks in arrays of metallic nanoparticles

We analyze nonlinear effects in optically driven arrays of nonlinear metallic nanoparticles. We demonstrate that such plasmonic systems are characterized by a bistable response, and they can support the propagation of dissipative switching waves (or plasmonic kinks) connecting the states with different polarization. We study numerically the properties of such plasmonic kinks which are characterized by a subwavelength extent and a tunable velocity.Comment: 6 pages, 5 figures, published in Opt. Expres

Efeito de residuos culturais de espécies de inverno no controle de plantas daninhas, nas culturas de soja e de milho.

bitstream/item/133611/1/ID12171-1992-1993sojaresultados-p137-148.pdfTrabalho apresentado na XXI Reunião de Pesquisa de Soja da Região Sul, Santa Rosa, 1993

Efeito do intervalo entre a aplicação de herbicidas e a semeadura, no desenvolvimento, na densidade e na produtividade da soja.

bitstream/item/133989/1/ID12166-1989-1990sojaresultados-p76-78.pdfTrabalho apresentado na XVIII Reunião de Pesquisa de Soja da Região Sul, Passo Fundo, 1990

Avaliação do efeito fitotóxico de trifluralina aplicada em pré-emergência na cultura do milho.

bitstream/item/119448/1/FOL-04691.pd

Investigation of the vibration isolation of commercial jet transport pilots during turbulent air penetration

Electrohydraulic pilot seat isolation system of commercial transport pilots during turbulent air penetratio

Quantum annealing of the Traveling Salesman Problem

We propose a path-integral Monte Carlo quantum annealing scheme for the symmetric Traveling Salesman Problem, based on a highly constrained Ising-like representation, and we compare its performance against standard thermal Simulated Annealing. The Monte Carlo moves implemented are standard, and consist in restructuring a tour by exchanging two links (2-opt moves). The quantum annealing scheme, even with a drastically simple form of kinetic energy, appears definitely superior to the classical one, when tested on a 1002 city instance of the standard TSPLIB.Comment: 5 pages, 2 figure