Development of a colloidal gold-based immunochromatographic strip for rapid detection of .

Background: (APV1), the causal agent of betel palm yellow leaf disease (YLD), has caused significant yield losses and decreased product quality of betel nuts, posing a serious economic threat to local farmers. There is an urgent need for a convenient and reliable method for the rapid detection and surveillance of APV1.

Methods: The Capsid protein (CP) of APV1 was expressed in and purified as antigen to immunize BALB/c mice.

Customized binary and multi-level HfO-based memristors tuned by oxidation conditions.

The memristor is a promising candidate for the next generation non-volatile memory, especially based on HfO, given its compatibility with advanced CMOS technologies. Although various resistive transitions were reported independently, customized binary and multi-level memristors in unified HfO material have not been studied. Here we report Pt/HfO/Ti memristors with double memristive modes, forming-free and low operation voltage, which were tuned by oxidation conditions of HfO films.