Abstract: This application prides relates to a foldable support plate, a flexible display module, and a foldable electronic device. In an example, a foldable support plate includes a first support portion, a foldable support portion, and a first transition support portion. When the foldable support plate is folded, the first support portion is in a flat state. The foldable support portion is in a bent state when the foldable support plate is folded. The first transition support portion is connected between the first support portion and the foldable support portion. A bending radian of the first transition support portion is less than a bending radian of the foldable support portion when the foldable support plate is folded.

Abstract: An electrochemical method for detecting hydrogen peroxide includes providing an electrochemical sensor comprising: a container holding an electrolyte; a coated electrode positioned in the container; and a counter electrode spaced apart from the coated electrode in the container, where the coated electrode includes a conductive substrate and a coating comprising a topological insulator on the conductive substrate. A voltage is applied to the coated electrode and the counter electrode, and a biological specimen is added to the electrolyte to form an analyte solution. Current density is measured. An increase in the current density upon forming the analyte solution indicates presence of hydrogen peroxide in the biological specimen.