研究目的
To demonstrate the fabrication of an optical shutter from a computer hard disk and its application in controlling laser beam exposure during two-photon polymerization microfabrication.
研究成果
The optical shutter developed from a computer hard disk, controlled via PWM using an Arduino Uno, effectively minimizes power dissipation and extends the device's lifetime. Its application in two-photon polymerization microfabrication demonstrates its utility in controlling laser beam exposure for precise microfabrication.
研究不足
The study focuses on the development and application of the optical shutter in a specific microfabrication setup. The scalability and adaptability of the shutter to other systems were not explored.
1：Experimental Design and Method Selection:
The optical shutter was developed using a computer hard disk's read/write arm, controlled by pulse width modulation (PWM) to minimize power dissipation. The Arduino Uno was used for PWM signal generation.
2：Sample Selection and Data Sources:
A computer hard disk was repurposed for the shutter. The response time of the shutter was measured using a HeNe laser and a photodiode.
3：List of Experimental Equipment and Materials:
Computer hard disk, Arduino Uno, ATtiny85 microcontroller, transistor, potentiometer, HeNe laser, photodiode, oscilloscope.
4：Experimental Procedures and Operational Workflow:
The hard disk's read/write arm was converted into an optical shutter. PWM was applied to control the current, reducing power dissipation. The shutter's response time was measured.
5：Data Analysis Methods:
The delay between the electrical activation signal and the photodiode output was measured using an oscilloscope to determine the shutter's response time.
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