This paper presents the use of insulator-based dielectrophoresis (iDEP) device comprising of densely packed silica beads that achieved high bacterial inactivation performance (~ 4.75 log removal). In the device, insulating silica microbeads were packed between two mesh electrodes that enabled the enhancement of the local electric field strength allowing electroporation of bacterial cells. The inactivation performance of the device was evaluated using two model bacteria including one Gram-po...