Abstract: A real time and quantitative method of measuring traction force of living cells include the following procedures. Place AT-cut and BT-cut quartz crystals of the same frequency, surface morphology and/or modified with the same cell adhesion molecules in petri dishes or detection cells; add the cells to the petri dishes or detection cells, the cell traction force at arbitrary time t during adhesion of the cells or under different internal/external environmental stimulations is estimated by the following equation: ?St=(KAT?KBT)?1[tqAT?ftAT/frAT?tqBT?ftBT/frBT]. The method can be used to track the dynamic changes of cells generated force during the adhesion of cells and under different internal/external environmental stimulations, such as the effects of drugs. The drugs can be added before or after the adhesion of the cells. This method is suitable for all adherent cells, including primary cells and passage cells.

Abstract: The present disclosure discloses an isolation structure of a large array antenna and an antenna. According to an embodiment of the present disclosure, a boundary plate is disposed between array elements of a large array antenna. The boundary plate has hollowed-out areas and is perpendicular to a plane where the array elements are located. The hollowed-out areas of the boundary plate form sub-areas with staggered patterns in the boundary plate to allow a coupling path of signals of array elements generated at the boundary plate and a radiation path of the array elements to counteract with each other, so as to weaken the coupling between the array elements and improve the isolation between the array elements, especially the isolation between 3-5 db array elements.