Ressonância magnética nuclear de bancada baseada em arranjos Halbach aplicada à agricultura: Uma revisão da literatura

Autores

DOI:

https://doi.org/10.33448/rsd-v15i2.50520

Palavras-chave:

Ressonância Magnética Nuclear de baixo campo, Arranjos magnéticos de Halbach, Análise não destrutiva, Aplicações agrícolas e alimentares.

Resumo

A Ressonância Magnética Nuclear (RMN) de baixo campo baseada em magnetos permanentes tem emergido como uma alternativa promissora aos sistemas convencionais de alto campo, especialmente para aplicações fora do ambiente laboratorial. Neste contexto, os arranjos de ímãs do tipo Halbach destacam-se por sua capacidade de gerar campos magnéticos intensos, homogêneos e auto-blindados em dispositivos compactos e de baixo custo operacional. O objetivo deste artigo é revisar de forma crítica o estado da arte da RMN de bancada baseada em arranjos Halbach e suas aplicações no setor agrícola e agroalimentar. A metodologia adotada consistiu em uma revisão sistemática da literatura científica publicada nas últimas décadas, abordando desde os fundamentos físicos da RMN de baixo campo, princípios de relaxometria e engenharia de magnetos Halbach, até estratégias avançadas de homogeneização de campo, estabilidade térmica e processamento de sinais. São discutidas aplicações relevantes em fenotipagem e fisiologia vegetal in vivo, monitoramento hídrico de solos, avaliação da qualidade de sementes e grãos, ciência da carne, controle de qualidade de alimentos e monitoramento de nutrientes e biocombustíveis. Os estudos analisados demonstram que sensores RMN baseados em Halbach possibilitam análises rápidas, não destrutivas e volumétricas diretamente em campo ou em linhas de processamento, superando limitações de métodos ópticos superficiais. Conclui-se que a integração de arranjos Halbach com técnicas avançadas de processamento de sinais, quimiometria e inteligência artificial representa um caminho estratégico para a democratização da RMN e para o avanço da agricultura de precisão e do controle de qualidade agroindustrial.

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2026-02-01

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Ciências Agrárias e Biológicas

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Ressonância magnética nuclear de bancada baseada em arranjos Halbach aplicada à agricultura: Uma revisão da literatura. Research, Society and Development, [S. l.], v. 15, n. 2, p. e0215250520, 2026. DOI: 10.33448/rsd-v15i2.50520. Disponível em: https://rsdjournal.org/rsd/article/view/50520. Acesso em: 12 fev. 2026.