Zobrazeno 1 - 10 of 10 pro vyhledávání: '"E. R. F. Ramos"'
1
Akademický článek
Hydrogels based on chemically modified poly(vinyl alcohol) (PVA-GMA) and PVA-GMA/chondroitin sulfate: Preparation and characterization
Autor: E. C. Muniz, E. G. Crispim, A. R. Fajardo, J. F. Piai, E. R. F. Ramos, T. U. Nakamura, C. V. Nakamura, A. F. Rubira
Publikováno v: eXPRESS Polymer Letters, Vol 6, Iss 5, Pp 383-395 (2012)
This work reports the preparation of hydrogels based on PVA-GMA, PVA-GMA is poly(vinyl alcohol) (PVA) functionalized with vinyl groups from glycidyl methacrylate (GMA), and on PVA-GMA with different content of chondroitin sulfate (CS). The degrees of
Externí odkaz: https://doaj.org/article/9b003e111358492cb46b4f03d6534685
Zobrazit plný text záznamu
2
Coupling collective modes in a trapped superfluid
Autor: Vanderlei Salvador Bagnato, F. E. A. dos Santos, E. R. F. Ramos, M. A. Caracanhas
Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::678c706f9564a4e578551a9f197db639
Zobrazit plný text záznamu
3
Three-vortex configurations in trapped Bose-Einstein condensates
Autor: P. E. S. Tavares, Kílvia Mayre Farias Magalhães, Emanuel Alves de Lima Henn, M. A. Caracanhas, Giacomo Roati, C. Castelo Branco, E. R. F. Ramos, J. A. Seman, P. C. M. Castilho, Vanderlei Salvador Bagnato, F. J. Poveda-Cuevas, R. F. Shiozaki, Masudul Haque
Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
We report on the creation of three-vortex clusters in a $^{87}Rb$ Bose-Einstein condensate by oscillatory excitation of the condensate. This procedure can create vortices of both circulation, so that we are able to create several types of vortex clus
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8d206d87aed0e28c5e973af4bc4a8bf5
https://doi.org/10.1103/physreva.82.033616
Zobrazit plný text záznamu
4
Collective excitation of a Bose-Einstein condensate by modulation of the atomic scattering length
Autor: Emanuel Alves de Lima Henn, S. E. Pollack, D. Dries, Randall G. Hulet, Kílvia Mayre Farias Magalhães, E. R. F. Ramos, Vanderlei Salvador Bagnato, M. A. Caracanhas
Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
We excite the lowest-lying quadrupole mode of a Bose-Einstein condensate by modulating the atomic scattering length via a Feshbach resonance. Excitation occurs at various modulation frequencies, and resonances located at the natural quadrupole freque
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8db2fca07ca7109f36bd9e25010bc3db
http://arxiv.org/abs/1004.2887
Zobrazit plný text záznamu
5
Observation of vortex formation in an oscillating trapped Bose-Einstein condensate
Autor: M. A. Caracanhas, E. P. Olimpio, Emanuel Alves de Lima Henn, J. A. Seman, P. C. M. Castilho, Vanderlei Salvador Bagnato, Kílvia Mayre Farias Magalhães, E. R. F. Ramos, Daniel Varela Magalhães, Giacomo Roati
Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
We report on the observation of vortex formation in a Bose-Einstein condensate of Rb-87 atoms. Vortices are generated by superimposing an oscillating excitation to the trapping potential introduced by an external magnetic field. For small amplitudes
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35b9e8bc1d73b60669431160bf7c3f85
Zobrazit plný text záznamu
6
Generation of nonground-state Bose-Einstein condensates by modulating atomic interactions
Autor: E. R. F. Ramos, Vanderlei Salvador Bagnato, Vyacheslav I. Yukalov, Kílvia Mayre Farias Magalhães, Emanuel Alves de Lima Henn, Kristian Helmerson, J. A. Seman, M. A. Caracanhas
Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
A technique is proposed for creating nonground-state Bose-Einstein condensates in a trapping potential by means of the temporal modulation of atomic interactions. Applying a time-dependent spatially homogeneous magnetic field modifies the atomic scat
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38955be20b02e4546ed169cd00d107c9
Zobrazit plný text záznamu
7
Finite temperature correction to the Thomas–Fermi approximation for a Bose–Einstein condensate: comparison between theory and experiment
Autor: Emanuel Alves de Lima Henn, Kílvia Mayre Farias Magalhães, M. A. Caracanhas, Vanderlei Salvador Bagnato, Kristian Helmerson, J. A. Seman, E. R. F. Ramos
Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
We observe experimentally a deviation of the radius of a Bose–Einstein condensate from the standard Thomas–Fermi prediction, after free expansion, as a function of temperature. A modified Hartree–Fock model is used to explain the observations,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8e1a24677df498a6caff00d34ba5f23
https://doi.org/10.1088/0953-4075/42/14/145304
Zobrazit plný text záznamu
8
Evaporação em armadilhas atômicas e as temperaturas mais baixas do Universo
Autor: J. A. Seman, T. Amthor, Vanderlei Salvador Bagnato, E. R. F. Ramos, Emanuel Alves de Lima Henn, A. H. Iavaronni
Publikováno v: Revista Brasileira de Ensino de Física, Vol 29, Iss 2, Pp 209-214
Revista Brasileira de Ensino de Física v.29 n.2 2007
Revista Brasileira de Ensino de Física
Sociedade Brasileira de Física (SBF)
instacron:SBF
Revista Brasileira de Ensino de Física, Volume: 29, Issue: 2, Pages: 209-214, Published: 2007
Neste trabalho apresentamos um modelo simples de resfriamento evaporativo para átomos ultrafrios aprisionados. Este processo objetiva a diminuição da temperatura da amostra gasosa a partir da retirada dos átomos mais quentes desta e conseqüente
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7dba3138b5551736370622701b27b963
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172007000200005&lng=en&tlng=en
Zobrazit plný text záznamu
9
Introduction to the basic-concepts of Bose-Einstein Condensation
Autor: V. S. Bagnato, K. M. F. Magalhães, J. A. Seman, E. A. L. Henn, E. R. F. Ramos, Rocio R. Jauregui, Jose A. Recamier, Oscar Rosas-Ortiz
Publikováno v: ResearcherID
This text corresponds to part of the course presented at the ELAF XXXVIII. It is composed of work previously done along the years. The level of this introduction follows the last year of undergraduate and first year of graduate courses. We apologize
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebad6846d9a97d1816edf9c44901d435
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=ORCID&SrcApp=OrcidOrg&DestLinkType=FullRecord&DestApp=WOS_CPL&KeyUT=WOS:000254903300003&KeyUID=WOS:000254903300003
Zobrazit plný text záznamu
10
Akademický článek
Finite temperature correction to the Thomas-Fermi approximation for a Bose-Einstein condensate: comparison between theory and experiment.
Autor: M A Caracanhas, J A Seman, E R F Ramos, E A L Henn, K M F Magalhaes, K Helmerson, V S Bagnato
Publikováno v: Journal of Physics B: Atomic, Molecular & Optical Physics; Jul2009, Vol. 42 Issue 14, p145304-145304, 1p
Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání

Omezení vyhledávání
Plný text Recenzováno Digitální knihovna AV ČR
Zdroje