Abstract: A light emitting diode (LED) linear light modulator with temperature compensation includes a comparing module, a timing processing module, an LED module and a temperature compensating current control module. The comparing module compares an analog input signal with a triangular wave sampling signal to generate a pulse width modulation (PWM) signal. The PWM signal is inputted into the timing processing module and converted to a digital signal. The temperature compensating current control module, electrically connected to the LED module and the timing processing module, includes a plurality of low-temperature correlated linear current units and a switching switch, and controls a current amount passing through the LED module to generate a low-temperature correlated linear current. Thus, the color temperature of an LED is prevented from drifting with a change in the ambient temperature.

Abstract: The present application relates to a method of increasing density of aligned carbon nanotubes. Firstly, aligned carbon nanotubes grown on a substrate is transferred to a stretched retractable film. The retractable film is then shrunk along a direction which is perpendicular to the alignment direction of the carbon nanotubes to obtain high density carbon nanotubes. The array of aligned carbon nanotubes is finally transferred from the retractable film to a target substrate. The disclosed method can efficiently obtain high-density high-quality aligned carbon nanotubes at low cost.

Abstract: The present application relates to a method of increasing density of aligned carbon nanotubes. Firstly, aligned carbon nanotubes grown on a substrate is transferred to a stretched retractable film. The retractable film is then shrunk along a direction which is perpendicular to the alignment direction of the carbon nanotubes to obtain high density carbon nanotubes. The array of aligned carbon nanotubes is finally transferred from the retractable film to a target substrate. The disclosed method can efficiently obtain high-density high-quality aligned carbon nanotubes at low cost.