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Errors in Taping01:18

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Errors in taping arise from multiple factors that can significantly impact measurement accuracy in surveying. Misalignment of the tape, often due to human error, is one primary source. A skilled rear tapeman, using a telescope, can help correct alignment by guiding the head tapeman; however, human limitations still lead to small inaccuracies. These errors may include misplacement of pins or inaccurate tape readings due to common visual confusions, such as mistaking a six for a nine. Such...
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Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
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Taping over varying ground profiles requires careful adaptation to achieve accurate measurements. On smooth, level ground with minimal vegetation, the tape can rest directly on the ground. Here, the taping team, typically consisting of a head and a rear tapeman, coordinates their positions with clear communication. The rear tapeman holds the tape at the starting point and guides the head tapeman toward a range pole placed beyond the endpoint, using hand or voice signals to ensure alignment.On...
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One of the unique features of tRNA is the presence of modified bases. In some tRNAs, modified bases account for nearly 20% of the total bases in the molecule. Altogether, these unusual bases protect the tRNA from enzymatic degradation by RNases.
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Tape-Based Photodetector: Transfer Process and Persistent Photoconductivity.

Li Wang1, Peng Chen1, Yu-Cheng Wang1

  • 1School of Electronics and Information Technology, State Key Laboratory of Opto-Electronic Materials & Technologies, Guangdong Province Key Laboratory of Display Materials and Technologies , Sun Yat-sen University , Guangzhou 510275 , People's Republic of China.

ACS Applied Materials & Interfaces
|April 25, 2018
PubMed
Summary
This summary is machine-generated.

Flexible photodetectors fabricated on tape using cadmium sulfide (CdS) nanowires show excellent performance. Introducing poly(3,4-ethylenedioxythiophene)polystyrene sulfonate (PEDOT:PSS) eliminates persistent photocurrent and enhances response speed.

Keywords:
CdS nanowirespersistent photoconductivitysilver nanowires electrodetape transfer printingtape-based photodetector

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Optoelectronics

Background:

  • Flexible photodetectors are crucial for wearable electronics and IoT devices.
  • Conventional fabrication methods often involve rigid substrates and complex processes.
  • Persistent photocurrent is a significant limitation in many photodetector designs.

Purpose of the Study:

  • To develop a facile method for fabricating high-performance flexible photodetectors directly on tape.
  • To improve the performance of CdS nanowire-based photodetectors by eliminating persistent photocurrent.
  • To achieve fast response and ultrashort decay times in tape-based photodetectors.

Main Methods:

  • Fabrication of flexible photodetectors on tape using a facile transfer method.
  • Integration of CdS nanowire active layers and conductive polymer PEDOT:PSS.
  • Characterization of device performance, including response time and decay time.

Main Results:

  • Tape-based photodetectors with CdS nanowire active layers demonstrated comparable performance to conventional devices.
  • Introduction of PEDOT:PSS effectively eliminated persistent photocurrent in the photodetectors.
  • Optimized PEDOT:PSS concentration yielded devices with fast response, ultrashort decay times (6.64 ms with gold electrodes), and large photocurrent.

Conclusions:

  • A facile tape-based fabrication method for flexible photodetectors using CdS nanowires is demonstrated.
  • PEDOT:PSS incorporation successfully addresses the persistent photocurrent issue, enhancing device stability and performance.
  • The developed photodetectors exhibit superior response and decay characteristics, paving the way for advanced flexible optoelectronic applications.