摘要:
A sample fabricating method of irradiating a sample with a focused ion beam at an incident angle less than 90 degrees with respect to the surface of the sample, eliminating the peripheral area of a micro sample as a target, turning a specimen stage around a line segment perpendicular to the sample surface as a turn axis, irradiating the sample with the focused ion beam while the incident angle on the sample surface is fixed, and separating the micro sample or preparing the micro sample to be separated. A sample fabricating apparatus for forming a sample section in a sample held on a specimen stage by scanning and deflecting an ion beam, wherein an angle between an optical axis of the ion beam and the surface of the specimen stage is fixed and formation of a sample section is controlled by turning the specimen stage.
摘要:
An electron microscope stage mechanism capable of performing high-accuracy positioning while limiting vibration and drift. An ultrasonic motor is used in a stage drive mechanism, and a fixing mechanism capable of increasing stop stiffness is combined integrally with the motor. That is, a structure in which a piezoelectric actuator of the fixing mechanism is mounted in a pre-load mechanism together with the ultrasonic motor is used. When the stage is fixed by the fixing mechanism after acceleration, deceleration and positioning of the stage performed by the drive mechanism, the piezoelectric actuators positioned on opposite sides of the stage are extended to press the stage.
摘要:
A technique and exposure apparatus measures, with a high degree of accuracy, figure and placement errors of individual optical elements constituting optics embedded inside of an exposure apparatus or the like, with the optics kept in an embedded state as they are. The system measures the distribution of wavefront distortions in the optics while changing the positions of a light source and an image point inside an exposure field of the optics being observed. Optimal displacements of reflective surfaces constituting the optics are then found by calculation based on the measured distribution of wave-front distortions. Finally, the positions of the reflective surfaces are corrected in accordance with the calculated optimal displacements. The positions of the reflective surfaces are corrected by individually controlling displacements output by a plurality of actuators attached to each reflective surface and by mechanically modifying appropriate portions of the reflective surfaces.
摘要:
A separation type optical head according to the present invention includes at least a light source portion for emitting collimated beams, a focusing device (a focusing lens) for focusing the collimated beams onto an information recording surface of an optical disc medium, a focal point control mechanism for the position of the spot on the information recording surface, and a photo-detection portion for receiving beams reflected by the information recording surface. The structure is divided into a fixed portion including the light source portion and the photo-detection portion and a movable portion including the focusing device (focusing lens) and the focal point control mechanism. At least the movable portion of the separation type optical head is movably accommodated n a frame (sealing case) for the optical head so as to prevent irregular vibrations of the movable portion due to high speed air flows or turbulence. Furthermore, a focal point control mechanism of an air float type may be employed in the movable portion of the separation type optical head so as to actively utilize the high speed air flow generated due to the rotation of the disc medium to perform a rough adjustment of the focal point of the focusing device.
摘要:
An object of the present invention is to provide a scanning electron microscope capable of facilitating the cleaning of an electrostatic chuck and also reducing unavailable time due to contamination of the electrostatic chuck. To solve the above problems, there is a proposal of an electron microscope in which a sample is loaded via an auxiliary evacuated chamber in order to carry out measurements and observations using an electron beam, the electron microscope including an electrostatic chuck replacement chamber that is different from the auxiliary evacuated chamber, and a vacuum pump for evacuating the replacement chamber. This configuration eliminates the need to restore a sample chamber to atmospheric pressure for the electrostatic chuck, and also enables effective cleaning of the electrostatic chuck.
摘要:
A sample fabricating method of irradiating a sample with a focused ion beam at an incident angle less than 90 degrees with respect to the surface of the sample, eliminating the peripheral area of a micro sample as a target, turning a specimen stage around a line segment perpendicular to the sample surface as a turn axis, irradiating the sample with the focused ion beam while the incident angle on the sample surface is fixed, and separating the micro sample or preparing the micro sample to be separated. A sample fabricating apparatus for forming a sample section in a sample held on a specimen stage by scanning and deflecting an ion beam, wherein an angle between an optical axis of the ion beam and the surface of the specimen stage is fixed and formation of a sample section is controlled by turning the specimen stage.
摘要:
A two axis stage for microscopes that is thin, has reduced vibration, and is adapted for increased stage transportation speeds is capable of being disposed inside a chamber without changing a floor-projected area. The XY stage comprises a base 1, an X table 2 that can be moved in an X direction on the base 1 by an X feed screw 7, and a Y table 3 that is supported on the X table 2 and movable in a Y direction. A third table 4 is disposed on the base 1, the third table being movable in the Y direction by a Y-feed screw 8 positioned on the base 1. Additionally, a slide unit 14 is disposed on the third table 4, the slide unit 14 being movable in the X direction and connected with the Y table 3.
摘要:
A sample fabricating method of irradiating a sample with a focused ion beam at an incident angle less than 90 degrees with respect to the surface of the sample, eliminating the peripheral area of a micro sample as a target, turning a specimen stage around a line segment perpendicular to the sample surface as a turn axis, irradiating the sample with the focused ion beam while the incident angle on the sample surface is fixed, and separating the micro sample or preparing the micro sample to be separated. A sample fabricating apparatus for forming a sample section in a sample held on a specimen stage by scanning and deflecting an ion beam, wherein an angle between an optical axis of the ion beam and the surface of the specimen stage is fixed and formation of a sample section is controlled by turning the specimen stage.
摘要:
A wafer transport method including the steps of preparing a semiconductor process equipment having a transport chamber, a process chamber, an interface means for connecting the transport chamber to the process chamber, and a transport means for transporting a semiconductor wafer from the transport chamber to the process chamber by way of the interface means; inserting the transport means mounting a substrate in a communicating corridor including a supply means and an exhaust means; and transporting the substrate while performing the supply and exhaust by sequentially controlling a supply shutoff means, an exhaust shutoff means, and a communicating shutoff means according to the position of a conductance part formed of a gap between the transport means and the communicating corridor. With this method, the substrate is transported at a high throughput without the contamination on the substrate while keeping the different atmospheric conditions of the transport chamber and the process chamber, thereby manufacturing a semiconductor device with a high performance.
摘要:
A sample stage for electron microscope according to an embodiment of the invention includes at least two actuators capable of expanding and contracting or capable of swinging for moving a target sample in a predetermined direction. With a coordination of the two actuators, various controls are available by combining the operations of the two actuators. Accordingly, a stage mechanism capable of reducing a stop drift as well as moving a stage can be provided.