Abstract: An output control method according to an embodiment is to control an output by a deflection amplifier that outputs a voltage signal to a deflection electrode of an electron beam writing apparatus. The voltage signal is proportional to input data, and the method includes: performing, for the voltage signal generated by synthesizing respective outputs by a plurality of D/A converters to which a control range of the voltage signal is assigned, the respective outputs by the plurality of D/A converters being proportional to respective inputs, sampling on at least either a lower limit value of the voltage signal within the control range or an upper limit value thereof; and generating a correction value to correct the output by the D/A converter based on the sampling result.

Abstract: An output control method according to an embodiment is to control an output by a deflection amplifier that outputs a voltage signal to a deflection electrode of an electron beam writing apparatus. The voltage signal is proportional to input data, and the method includes: performing, for the voltage signal generated by synthesizing respective outputs by a plurality of D/A converters to which a control range of the voltage signal is assigned, the respective outputs by the plurality of D/A converters being proportional to respective inputs, sampling on at least either a lower limit value of the voltage signal within the control range or an upper limit value thereof; and generating a correction value to correct the output by the D/A converter based on the sampling result.

Abstract: A base sequence detection apparatus is provided with a channel formed on a base sequence detection chip. Working electrodes are formed along the channel and include a probe immobilized thereon, counter electrodes are formed on the inner surface of the channel and, reference electrodes are formed on the inner surface of the channel. An introduction port introduces solution or air from the upstream side of the channel, a delivery port delivers the solution or air in the channel, and the sample is injected into the channel through a sample injection port.

Abstract: A base sequence detection apparatus is provided with a channel formed on a base sequence detection chip. Working electrodes are formed along the channel and include a probe immobilized thereon, counter electrodes are formed on the inner surface of the channel and, reference electrodes are formed on the inner surface of the channel. An introduction port introduces solution or air from the upstream side of the channel, a delivery port delivers the solution or air in the channel, and the sample is injected into the channel through a sample injection port.

Abstract: A base sequence detection apparatus is provided with a channel formed on a base sequence detection chip. Working electrodes are formed along the channel and include a probe immobilized thereon, counter electrodes are formed on the inner surface of the channel and, reference electrodes are formed on the inner surface of the channel. An introduction port introduces solution or air from the upstream side of the channel, a delivery port delivers the solution or air in the channel, and the sample is injected into the channel through a sample injection port.

Abstract: An electron beam drawing apparatus includes an acquisition unit which acquires a position data of an Nth drawing area, an acquisition unit which acquires a stage position and speed, a prediction unit which predicts a stage position when drawing on the Nth area is carried out, a determination unit which determines whether a distance from the stage position to the Nth area position is less than a deflection distance, a decision unit which, when the distance is less than the deflection distance, corrects a deflection distortion in accordance with the determined distance and decides a deflection voltage, a detection unit which detects a drawing end of an (N-1)th drawing area when drawing on the (N-1)th area is ended, and a drawing unit which, when the drawing end is detected, deflects an electron beam in accordance with the deflection voltage to draw a pattern on the Nth area.

Abstract: A base sequence detection apparatus is provided with a channel formed on a base sequence detection chip. Working electrodes are formed along the channel and include a probe immobilized thereon, counter electrodes are formed on the inner surface of the channel and, reference electrodes are formed on the inner surface of the channel. An introduction port introduces solution or air from the upstream side of the channel, a delivery port delivers the solution or air in the channel, and the sample is injected into the channel through a sample injection port.

Abstract: A pressure measuring system wherein light is transmitted from a light source via a first optical fiber to a pressure-receiving diaphragm having a reflecting surface which undergoes a deflection in relation to the pressure being measured. The diaphragm reflects light transmitted thereto to a second optical fiber which transmits the reflected light to a first photosensitive element. A reference optical fiber is arranged approximately coextensive to the first and second optical fibers and transmits light from the light source in round trip fashion along substantially the same path as light transmitted by the first and second optical fibers to a second photosensitive element. The photosensitive elements produce respective electrical signals which are applied to an operational circuit which eliminates variations in the amount of light due to external disturbances by dividing one electrical signal by the other.