Mixing performance of a planar micromixer with circular obstructions in a curved microchannel

Numerical study of fluid mixing at different inlet flow-rate ratios in Tear-drop and Chain micromixers compared to a new H-C passive micromixer

“…The use of microfluidic devices permit a reduction in the size and cost of laboratory equipment, diminishing the consumption of specimens and increasing the speed and reliability of analysis (Solehati, Bae, & Sasmito, 2014). Micromixers are broadly applied in various industrial processes such as polymer mixing, chemical reaction and food processing, in cosmetics and pharmaceutics, and also in waste-water treatment (Alam, Afzal, & Kim, 2014;Hossain, Husain, & Kim, 2011;Meijer, Singh, & Patrick, 2012). Convection and diffusion are the basic mechanisms which permit fluid mixing in mixers (Liu, Deng, Zhang, Liu, & Wu, 2013).…”

Análise numérica da mistura do óleo de Pinhão-Manso e etanol em microcanais

“…Para malhas mais refinadas (volumes de controle acima de 9,00 × 10 5 ), a mistura dos fluidos começa a tender para um valor em torno de 0,7. Trabalhos como os de Alam et al, (2013), Alam e Kim (2012) e Ansari e Kim (2009) que também realizaram um teste de malha com água e etanol, encontraram a mesma relação entre o refinamento da malha e o valor do índice de mistura. Por isso o valor de 1,14 × 10 6 foi selecionado para o estudo da mistura nos micromisturadores, visto que os valores de 9,65 × 10 5 e 1,43 × 10 6 apresentaram comportamento diferente do esperado.…”

“…Os ativos, utilizam uma fonte externa de energia, que pode ser elétrica ou magnética, para realizar a mistura dos fluidos. Já nos passivos não é utilizado nenhuma fonte de energia, além da pressão básica utilizada para guiar o escoamento dos fluidos (Nguyen e Wereley, 2006;Alam et al, 2013). …”

Development of quantum dots-based biosensor towards on-farm detection of subclinical ketosis

“…Here, the reagent and the sample solutions must be loaded into the two inlets simultaneously to maximally avoid trapping air bubble. Cylinder-shaped posts were embedded in the microchannel as the passive micromixer which has been proven to be able to enhance mixing performance without damaging bio-cells in the transmission (Alam et al, 2014). The microfluidic chip was made by the following the standard soft lithography protocol (Weng et al, 2011).…”