Abstract: This invention relates to a method and apparatus for controlling the length of a carbon nanotube, in cooperation with a substrate having at least one reference level on a surface of the substrate on which at least one carbon nanotube is formed, comprising at least one positioning platform for mounting and calibrating the substrate; a discharging electrode mounted on one side of the positioning platform to cut the carbon nanotube wherein the position of the discharging electrode can be calibrated with the positioning platform; a piezoelectric actuator for calibrating the position of the discharging electrode or the height of the discharging electrode relative to the substrate reference level; a position sensor for detection of the height of the substrate; and a voltage pulse supplying means for applying a voltage pulse to the discharging electrode to cut the carbon nanotube.

Abstract: A high access rate flash control provided for accessing more than one flash memory chip having different access timing specifications is disclosed. The controller comprises a read/write(R/W) pulse generator, a R/W delay chain circuit, a sampling delay chain circuit, a bi-directional feedback pad (PAD1), a data bus sampler, and a second pad (PAD 2). In an embodiment, the flash controller using a fix clock to generate synchronized Read/Write pulse which is then appropriated adjusted by the R/W delay chain circuit to provide optimum R/W control signal. The adjusted R/W signal is than outputted by a bi-directional pad to flash memory chips. With the external signal feedback function, the bi-directional pad has associated with the sampling delay chain, the time latency due to pads can be eliminated nearly. Thus, the flash controller can approach high rate to access flash chips.

Abstract: This invention relates to a method and apparatus for controlling the length of a carbon nanotube, in cooperation with a substrate having at least one reference level on a surface of the substrate on which at least one carbon nanotube is formed, comprising at least one positioning platform for mounting and calibrating the substrate; a discharging electrode mounted on one side of the positioning platform to cut the carbon nanotube wherein the position of the discharging electrode can be calibrated with the positioning platform; a piezoelectric actuator for calibrating the position of the discharging electrode or the height of the discharging electrode relative to the substrate reference level; a position sensor for detection of the height of the substrate; and a voltage pulse supplying means for applying a voltage pulse to the discharging electrode to cut the carbon nanotube.

Abstract: A high access rate flash control provided for accessing more than one flash memory chip having different access timing specifications is disclosed. The controller comprises a read/write (R/W) pulse generator, a R/W delay chain circuit, a sampling delay chain circuit, a bi-directional feedback pad (PAD1), a data bus sampler, and a second pad (PAD2). In an embodiment, the flash controller using a fix clock to generate synchronized Read/Write pulse which is then appropriated adjusted by the R/W delay chain circuit to provide optimum R/W control signal. The adjusted R/W signal is than outputted by a bi-directional pad to flash memory chips. With the external signal feedback function, the bi-directional pad has associated with the sampling delay chain, the time latency due to pads can be eliminated nearly. Thus, the flash controller can approach high rate to access flash chips.

Abstract: This invention relates to a method and apparatus for controlling the length of a carbon nanotube, in cooperation with a substrate having at least one reference level on a surface of the substrate on which at least one carbon nanotube is formed, comprising at least one positioning platform for mounting and calibrating the substrate; a discharging electrode mounted on one side of the positioning platform to cut the carbon nanotube wherein the position of the discharging electrode can be calibrated with the positioning platform; a piezoelectric actuator for calibrating the position of the discharging electrode or the height of the discharging electrode relative to the substrate reference level; a position sensor for detection of the height of the substrate; and a voltage pulse supplying means for applying a voltage pulse to the discharging electrode to cut the carbon nanotube.