{"id":29,"date":"2014-03-17T13:53:39","date_gmt":"2014-03-17T13:53:39","guid":{"rendered":"https:\/\/sites.ifi.unicamp.br\/modelogrupo\/?page_id=29"},"modified":"2026-02-12T08:48:47","modified_gmt":"2026-02-12T11:48:47","slug":"pesquisa","status":"publish","type":"page","link":"https:\/\/sites.ifi.unicamp.br\/gmfa\/en\/pesquisa\/","title":{"rendered":"Research"},"content":{"rendered":"

<\/p>\n

Nanomagnetism \/ Magnetic Hyperthermia<\/strong><\/span><\/h3>\n

Our research focuses on the study of magnetic phenomena in nanostructured systems. We are particularly interested in the properties and behavior of magnetic nanoparticles, with an emphasis on biomedical applications such as magnetic hyperthermia, as well as other potential technological uses of these nanomaterials.<\/p>\n

Research topics include:<\/p>\n

    \n
  • Hybrid nanoparticles: fundamentals and applications<\/strong><\/li>\n
  • Nanoparticles for magnetic hyperthermia<\/strong><\/li>\n
  • Application of nanoparticles in viscous fluids and flow systems<\/strong><\/li>\n
  • \n

    Kramers’ theory and interparticle interactions<\/strong><\/p>\n<\/li>\n<\/ul>\n

    \n

    Magnetic Oxides \/ Neuromorphic Computing<\/span><\/h3>\n

    We investigate complex magnetic oxides with potential applications in neuromorphic computing. Our focus includes both bulk materials<\/strong> and thin films<\/strong>, particularly those exhibiting promising magnetic and electronic properties<\/strong> for integration into neuromorphic circuits.<\/p>\n

    We employ advanced techniques such as spin resonance<\/strong> and ferromagnetic resonance<\/strong>, measured as a function of temperature and voltage, alongside magnetization<\/strong>, electronic transport<\/strong>, and X-ray diffraction<\/strong> measurements.<\/p>\n

    Research topics include:<\/p>\n

      \n
    • Phase separation<\/strong><\/li>\n
    • Griffiths phase<\/strong><\/li>\n
    • Metal-insulator transitions<\/strong><\/li>\n
    • Resistive switching<\/strong><\/li>\n
    • Multiferroic properties<\/strong><\/li>\n<\/ul>\n

      One of our main research directions involves studying how different types of stimuli \u2014 optical, magnetic, and electronic<\/strong> \u2014 influence the various degrees of freedom in these oxides, and how these interactions affect their functional properties.<\/p>\n

      Equipments <\/span><\/h3>\n
        \n
      • Chemical Lab<\/strong> to sample Preparation with two chaples.<\/li>\n
      • X-Ray Diffractometer: <\/strong> Rigaku DMAX X-ray diffractometer operates at angles between 5 \u00b0and 110\u00b0  and is capable of functioning within a temperature range from 25 K to 300 K.<\/li>\n
      • EPR:<\/strong> non-commercial X-band spectrometer (f = 9.14 GHz) with 2 mW power, with magnetic fields ranging from 0.5 to 8 kOe applied at a ramp rate of 80 Oe\/s. The temperature was controlled within \u00b12 K and varied between 108 and 300 K during the measurements.<\/li>\n
      • SQUID:<\/strong> Quantum Design \u2013 SQUID – SQUID MPMS up to 7T, desde 2K a 325K, with a fiber optic accessory. Since few years not working to problems in supply of He.<\/li>\n
      • PPMS:<\/strong> Quantum Design PPMS \u2013 Physical Property Measurement System. It operates under a magnetic field up to 9T and a temperature range between 2K and 320K. It facilitates calorimetric measurements through relaxation techniques, heat flux measurements using Peltier sensors, four-point resistivity measurements, and DC and AC magnetization measurements ranging from 100Hz to 10kHz.<\/li>\n
      • Hyperthemria:<\/strong> Equipment to meassure Specific Absorption Rate\/ Magneto-hypertermia experiments at differente fields and frequencies.<\/li>\n<\/ul>\n

         <\/p>\n

        \n

        \"\"<\/span><\/h3>\n

         Conhecimento Brasil<\/em><\/span><\/h3>\n

         01\/08\/2025-31\/08\/2029. #446156\/2024-8.  Hybrid Nanodevices Based on Mesoporous Silica-Coated Magnetic Nanoparticles for Water Treatment through Magnetic Hyperthermia. Coordinator: Dra. Maria Eug\u00eania Fortes Brollo<\/span><\/strong><\/p>\n

        The project aims to develop hybrid nanodevices composed of iron oxide nanoparticles
        \ncoated with mesoporous silica, with the goal of creating an innovative solution for water
        \ntreatment. These nanomaterials combine the magnetic properties of iron oxide nanoparticles with
        \nthe high surface area and chemical versatility of mesoporous silica, offering unique ad-
        \nvantages for environmental applications.<\/p>\n

        \n

        Recent Research Projects as Principal Investigator<\/strong><\/span><\/h3>\n

        \"\"  <\/strong><\/span><\/h3>\n

        CEPID<\/strong><\/span><\/h3>\n

        July 01, 2025 – June 30, 2030. #24\/00998-6. Center for Research and Innovation on Smart and Quantum Materials (CRISQuaM). Principal Researcher. Coordinator: Prof. Daniel Ugarte. <\/strong><\/p>\n

        O Centro tem como objetivo explorar de forma sin\u00e9rgica ci\u00eancias fundamentais e aplicadas para desenvolver novos materiais com alto potencial para o projeto e constru\u00e7\u00e3o de dispositivos e sensores que abordam desafios tecnol\u00f3gicos associados \u00e0 sustentabilidade, mudan\u00e7as clim\u00e1ticas, agricultura de precis\u00e3o, ecologia e sa\u00fade. Para alcan\u00e7ar esses objetivos, a equipe de pesquisa foi constru\u00edda com o conceito de pesquisa interdisciplinar e uma abordagem colaborativa para integrar especialidades de diversos dom\u00ednios cient\u00edficos para identificar e adaptar novos materiais com alto potencial de inova\u00e7\u00e3o. Ao combinar m\u00e9todos originais de s\u00edntese, t\u00e9cnicas avan\u00e7adas de caracteriza\u00e7\u00e3o, abordagens te\u00f3ricas, simula\u00e7\u00f5es computacionais, tecnologias qu\u00e2nticas e design e constru\u00e7\u00e3o de dispositivos inovadores, pretendemos ser pioneiros em avan\u00e7os em novos materiais inteligentes e qu\u00e2nticos, promovendo excel\u00eancia cient\u00edfica e desenvolvimento tecnol\u00f3gico. Esperamos alcan\u00e7ar inova\u00e7\u00e3o disruptiva em instrumenta\u00e7\u00e3o, tanto em hardware quanto em ferramentas baseadas em intelig\u00eancia artificial, tecnologias qu\u00e2nticas, dispositivos biom\u00e9dicos e processamento de sinais, bem como bi\u00f4nica vegetal, explorando intera\u00e7\u00f5es planta-pat\u00f3geno. Al\u00e9m das atividades de pesquisa, planejamos introduzir uma forte a\u00e7\u00e3o na educa\u00e7\u00e3o, difus\u00e3o e divulga\u00e7\u00e3o de informa\u00e7\u00f5es ao p\u00fablico n\u00e3o especializado, pois uma sociedade moderna deve estar ciente dos s\u00e9rios desafios que a humanidade est\u00e1 enfrentando e de como a pesquisa e a tecnologia s\u00e3o essenciais para desenvolver as ferramentas para explorar sabiamente os recursos limitados que nosso planeta pode oferecer. As atividades de inova\u00e7\u00e3o do Centro ser\u00e3o aceleradas desde o in\u00edcio pela parceria com v\u00e1rias empresas que trabalham em tecnologias relacionadas, muitas delas brasileiras. Por fim, todas as atividades do Centro ser\u00e3o gerenciadas respeitando metas de diversidade, equidade e inclus\u00e3o e as melhores pr\u00e1ticas nessa \u00e1rea. <\/p>\n

        \n

        \"\"<\/p>\n

        Jul 1, 2023 \u2013 Jun 30, 2025, FAPESP \u2013 Regular Grant: Ferrofluids for Viscous Fluid Flow Applications.
        \n<\/strong><\/p>\n

        This project seeks to enhance the magnetic properties of ferrofluids to optimize the conversion of electromagnetic energy into heat via the magneto-hyperthermia (MH) effect, for application in the recovery and transport of oil or any viscous fluid by reducing its viscosity. MH is a phenomenon in which the temperature of a system containing magnetic nanoparticles (NPs) increases when exposed to an alternating magnetic field, as the electromagnetic energy is converted into heat through the magnetization reversal of the NPs. Viscosity, on the other hand, decreases as temperature rises. Highly viscous liquids are present in several industries, including Oil & Gas, pharmaceuticals, chemical, and food sectors, where reducing viscosity can lead to lower extraction or transportation costs. The potential implementation of magnetic nanoparticles in this technological challenge originates from a fundamental issue related to the dispersion of NPs in viscous fluids. Therefore, this project aims to develop new synthesis methods for colloidal magnetic nanoparticle systems, targeting their implementation in fluid extraction or transport technologies.<\/p>\n

        \n

        \"\"<\/p>\n

        Mar 1, 2024 \u2013 Feb 28, 2027, CNPq \u2013 Magneto-hyperthermia in Clustered Nanoparticles.
        Productivity in Research Grant, PQ2.<\/strong><\/p>\n

        This project is of significant scientific and technological relevance. From a technological perspective, it could lead to the development of new technologies that reduce costs in processes involving the transport of viscous liquids, with potential applications across a broad range of industries. Additionally, magnetic nanoparticles can be easily recovered and reused. From a scientific standpoint, the project will contribute to the generation of knowledge in the field of colloidal NP dispersions\u2014a cross-cutting topic relevant to any colloidal NP system, magnetic or non-magnetic.<\/p>\n

        There is no consensus in the international scientific community regarding the effects of dipolar interactions between magnetic nanoparticles and their consequences on heat capacity. This project will also contribute to the training of new researchers, with a minimum of three undergraduate students and one master\u2019s student involved, in addition to a postdoctoral researcher contributing to various activities.<\/p>\n

         <\/p>\n

        <\/p>","protected":false},"excerpt":{"rendered":"

        Nanomagnetism \/ Magnetic Hyperthermia Our research focuses on the study of magnetic phenomena in nanostructured systems. We are particularly interested in the properties and behavior of magnetic nanoparticles, with an emphasis on biomedical applications such as magnetic hyperthermia, as well as other potential technological uses of these nanomaterials. Research topics include: Hybrid nanoparticles: fundamentals and … <\/p>\n

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