Abstract: A robot navigation system includes a handheld robot, a spatial information measuring device, a computing module and a display. The hand-held robot has a body, a tool and a movable connection mechanism. The movable connection mechanism is connected between the body and the tool, so that the tool can move relative to the body. The spatial information measuring device is configured to track the body, the tool and a target. The computing module is connected to the spatial information measuring device to obtain a plurality of relative positions between the body, the tool and the movable connection mechanism with respect to the target. The computing module calculates a guiding region according to the relative positions and mechanical parameters of the handheld robot. The display is configured to display the guiding region and the handheld robot based on the coordinate of the target.

Abstract: In an embodiment, a chip is used for isolating RBC from a whole blood and includes an accommodating space, a porous membrane and a microchannel system. The accommodating space is configured for containing a whole blood sample including RBC debris. The porous membrane is disposed at a bottom of the accommodating space and includes a plurality of pores. A diameter of the pores is larger than a size of the RBC debris and larger than a mean diameter of WBCs and CTCs. The microchannel system includes a liquid inlet, a liquid outlet and a microchannel. The microchannel is disposed between and communicates with the liquid inlet and the liquid outlet. The microchannel is disposed under the porous membrane.

Abstract: A robot navigation system includes a handheld robot, a spatial information measuring device, a computing module and a display. The hand-held robot has a body, a tool and a movable connection mechanism. The movable connection mechanism is connected between the body and the tool, so that the tool can move relative to the body. The spatial information measuring device is configured to track the body, the tool and a target. The computing module is connected to the spatial information measuring device to obtain a plurality of relative positions between the body, the tool and the movable connection mechanism with respect to the target. The computing module calculates a guiding region according to the relative positions and mechanical parameters of the handheld robot. The display is configured to display the guiding region and the handheld robot based on the coordinate of the target.

Abstract: A modified epoxy resin is prepared by mixing an isocyanate terminated urethane prepolymer with an epoxy resin in reactive conditions. The modified epoxy resin has a low internal stress when it is cured due to the flexible backbone of the urethane prepolymer incorporated therein, and has a high glass transition temperature due to a rigid oxazolidone structure formed via the epoxy ring opening with the isocyanate groups, and thus is useful as an electronic encapsulant.