1
|
López-Sánchez J, Peña Á, Serrano A, Del Campo A, Rodríguez de la Fuente Ó, Carmona N, Matatagui D, Horrillo MDC, Rubio-Zuazo J, Navarro E, Marín P. Generation of Defective Few-Layered Graphene Mesostructures by High-Energy Ball Milling and Their Combination with FeSiCuNbB Microwires for Reinforcing Microwave Absorbing Properties. ACS APPLIED MATERIALS & INTERFACES 2023; 15:3507-3521. [PMID: 36606586 DOI: 10.1021/acsami.2c19886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Defective few-layered graphene mesostructures (DFLGMs) are produced from graphite flakes by high-energy milling processes. We obtain an accurate control of the generated mesostructures, as well as of the amount and classification of the structural defects formed, providing a functional material for microwave absorption purposes. Working under far-field conditions, competitive values of minimum reflection loss coefficient (RLmin) = -21.76 dB and EAB = 4.77 dB are achieved when DFLGMs are immersed in paints at a low volume fraction (1.95%). One step forward is developed by combining them with the excellent absorption behavior that offers amorphous Fe73.5Si13.5B9Cu1Nb microwires (MWs), varying their filling contents, which are below 3%. We obtain a RLmin improvement of 47% (-53.08 dB) and an EAB enhancement of 137% (4 dB) compared to those obtained by MW-based paints. Furthermore, a fmin tunability is demonstrated, maintaining similar RLmin and EAB values, irrespective of an ideal matching thickness. In this scenario, the Maxwell-Garnet standard model is valid, and dielectric losses mainly come from multiple reflections, interfacial and dielectric polarizations, which greatly boost the microwave attenuation of MWs. The present concept can remarkably enhance not only the MW attenuation but can also apply to other microwave absorption architectures of technological interest by adding low quantities of DFLGMs.
Collapse
Affiliation(s)
- Jesús López-Sánchez
- Instituto de Magnetismo Aplicado (IMA), Universidad Complutense de Madrid-Administrador de Infraestructuras Ferroviarias (UCM─ADIF), 28230Las Rozas, Spain
- Departamento de Electrocerámica, Instituto de Cerámica y Vidrio─Consejo Superior de Investigaciones Científicas (ICV─CSIC), 28049Madrid, Spain
| | - Álvaro Peña
- Instituto de Magnetismo Aplicado (IMA), Universidad Complutense de Madrid-Administrador de Infraestructuras Ferroviarias (UCM─ADIF), 28230Las Rozas, Spain
- Departamento de Física de Materiales, Universidad Complutense de Madrid (UCM), 28040Madrid, Spain
| | - Aída Serrano
- Departamento de Electrocerámica, Instituto de Cerámica y Vidrio─Consejo Superior de Investigaciones Científicas (ICV─CSIC), 28049Madrid, Spain
| | - Adolfo Del Campo
- Departamento de Electrocerámica, Instituto de Cerámica y Vidrio─Consejo Superior de Investigaciones Científicas (ICV─CSIC), 28049Madrid, Spain
| | - Óscar Rodríguez de la Fuente
- Instituto de Magnetismo Aplicado (IMA), Universidad Complutense de Madrid-Administrador de Infraestructuras Ferroviarias (UCM─ADIF), 28230Las Rozas, Spain
- Departamento de Física de Materiales, Universidad Complutense de Madrid (UCM), 28040Madrid, Spain
| | - Noemí Carmona
- Instituto de Magnetismo Aplicado (IMA), Universidad Complutense de Madrid-Administrador de Infraestructuras Ferroviarias (UCM─ADIF), 28230Las Rozas, Spain
- Departamento de Física de Materiales, Universidad Complutense de Madrid (UCM), 28040Madrid, Spain
| | - Daniel Matatagui
- Instituto de Magnetismo Aplicado (IMA), Universidad Complutense de Madrid-Administrador de Infraestructuras Ferroviarias (UCM─ADIF), 28230Las Rozas, Spain
- Departamento de Física de Materiales, Universidad Complutense de Madrid (UCM), 28040Madrid, Spain
- SENSAVAN, Instituto de Tecnologías Físicas y de la Información─Consejo Superior de Investigaciones Científicas (ITEFI─CSIC), 28006Madrid, Spain
| | - María Del Carmen Horrillo
- SENSAVAN, Instituto de Tecnologías Físicas y de la Información─Consejo Superior de Investigaciones Científicas (ITEFI─CSIC), 28006Madrid, Spain
| | - Juan Rubio-Zuazo
- Spanish CRG BM25-SpLine at The ESRF─The European Synchrotron, 38000Grenoble, France
- Instituto de Ciencia de Materiales de Madrid─Consejo Superior de Investigaciones Científicas (ICMM─CSIC), 28049Madrid, Spain
| | - Elena Navarro
- Instituto de Magnetismo Aplicado (IMA), Universidad Complutense de Madrid-Administrador de Infraestructuras Ferroviarias (UCM─ADIF), 28230Las Rozas, Spain
- Departamento de Física de Materiales, Universidad Complutense de Madrid (UCM), 28040Madrid, Spain
| | - Pilar Marín
- Instituto de Magnetismo Aplicado (IMA), Universidad Complutense de Madrid-Administrador de Infraestructuras Ferroviarias (UCM─ADIF), 28230Las Rozas, Spain
- Departamento de Física de Materiales, Universidad Complutense de Madrid (UCM), 28040Madrid, Spain
| |
Collapse
|
2
|
Raouf I, Gas P, Kim HS. Numerical Investigation of Ferrofluid Preparation during In-Vitro Culture of Cancer Therapy for Magnetic Nanoparticle Hyperthermia. SENSORS (BASEL, SWITZERLAND) 2021; 21:5545. [PMID: 34450987 PMCID: PMC8402254 DOI: 10.3390/s21165545] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/12/2021] [Accepted: 08/12/2021] [Indexed: 12/19/2022]
Abstract
Recently, in-vitro studies of magnetic nanoparticle (MNP) hyperthermia have attracted significant attention because of the severity of this cancer therapy for in-vivo culture. Accurate temperature evaluation is one of the key challenges of MNP hyperthermia. Hence, numerical studies play a crucial role in evaluating the thermal behavior of ferrofluids. As a result, the optimum therapeutic conditions can be achieved. The presented research work aims to develop a comprehensive numerical model that directly correlates the MNP hyperthermia parameters to the thermal response of the in-vitro model using optimization through linear response theory (LRT). For that purpose, the ferrofluid solution is evaluated based on various parameters, and the temperature distribution of the system is estimated in space and time. Consequently, the optimum conditions for the ferrofluid preparation are estimated based on experimental and mathematical findings. The reliability of the presented model is evaluated via the correlation analysis between magnetic and calorimetric methods for the specific loss power (SLP) and intrinsic loss power (ILP) calculations. Besides, the presented numerical model is verified with our experimental setup. In summary, the proposed model offers a novel approach to investigate the thermal diffusion of a non-adiabatic ferrofluid sample intended for MNP hyperthermia in cancer treatment.
Collapse
Affiliation(s)
- Izaz Raouf
- Department of Mechanical, Robotics and Energy Engineering, Dongguk University-Seoul, 30 Pildong-ro 1-gil, Jung-gu, Seoul 100-715, Korea;
| | - Piotr Gas
- Department of Electrical and Power Engineering, AGH University of Science and Technology, Mickiewicza 30 Avenue, 30-059 Krakow, Poland
| | - Heung Soo Kim
- Department of Mechanical, Robotics and Energy Engineering, Dongguk University-Seoul, 30 Pildong-ro 1-gil, Jung-gu, Seoul 100-715, Korea;
| |
Collapse
|