研究目的
To develop a new method of printed electronics by integrating an electrophoretic QR code with a R2R printed wireless 1-bit code generator for wireless identification and authentication to prevent counterfeits.
研究成果
The study successfully demonstrates a novel method for creating an inexpensive RF-authentication system by integrating an electrophoretic QR code with a R2R printed wireless 1-bit code generator. This approach significantly reduces the complexity and cost of printed RFID tags, offering a practical solution for anti-counterfeiting applications.
研究不足
The yield of working ring oscillators varied between 6–53%, indicating a need for improvement in consistency. The process requires high temperature sintering for the antenna, which could be replaced by photosintering for a fully R2R process.
1:Experimental Design and Method Selection:
The study employs R2R gravure printing to fabricate a CMOS-based ring oscillator and integrates it with an electrophoretic QR code for authentication purposes.
2:Sample Selection and Data Sources:
Uses commercially available p-type single wall carbon nanotube (SWCNT) ink and develops an R2R printable n-doping ink.
3:List of Experimental Equipment and Materials:
Includes R2R gravure printing system, SWCNT ink, n-doping ink, silver nanoparticles for antenna, and electrophoretic display materials.
4:Experimental Procedures and Operational Workflow:
Describes the step-by-step printing process for fabricating the NFC QR code label, including printing of antenna, ring oscillator, and integration with electrophoretic QR code.
5:Data Analysis Methods:
Characterizes the electrical properties of the printed components and evaluates the performance of the NFC QR code label.
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BaTiO3 nanoparticles
100 nm
Sigma-Aldrich
Used in the formulation of dielectric ink for the printed electronics.
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SWCNT ink
PARU
Used as the p-type semiconducting layer in the printed electronics.
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TiO2 nanoparticles
25 nm
Inframat Advanced Materials LLC
Acted as a lubricant in the n-doping ink formulation to improve printability.
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PEI-based n-doping ink
Sigma-Aldrich
Used to convert p-type SWCNT-TFTs into n-type SWCNT-TFTs.
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Silver nanoparticles
Used for printing gate, drain, and source electrodes in the ring oscillator.
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Electrophoretic sheet
E-Ink
Used as the signage unit displaying the QR code.
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Diode
CDBU0130R-HF
Comchip Technology
Used in the voltage doubler for rectifying the NFC carrier signal.
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Capacitor
C3216JB1A107M160AC
TDK corporation of America
Used in the voltage doubler to maintain the output voltage.
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