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Application of Aerosol Jet 3D Printing with Conductive and Non-Conductive Inks for Manufacturing mm-Wave Circuits
摘要： In this paper, an application of Aerosol Jet 3D printing with conductive and non-conductive inks for the realization of mm-wave circuits well above 30 GHz is presented and investigated. The Optomec 5X aerosol jet 3D printing system is used together with polyimide and silver inks to fully-additive manufacture various microstrip circuits. A section of microstrip transmission line with a transition to a via-less conductor backed coplanar waveguide was designed together with a T-junction and a branch-line coupler. These circuits were designed to operate within the Ka and V frequency bands. The measured thickness of the polyimide dielectric substrate is 20.7 ± 1.35 μm while the silver traces are 2.6 ± 1.35 μm. A section of the transmission line with the developed transitions was measured up to the W-band, exhibiting a total loss of 0.65 dB/mm at 100 GHz. The T-junction power divider yielded a total loss at its center frequency of 34 GHz of 0.55 dB. The 3-dB branch line coupler yielded a loss at its center frequency at 42 GHz of 1.1 dB. The experimental results demonstrate the application of this approach for fast and high-resolution mm-wave circuit fabrication.
关键词： circuit fabrication,additive manufacturing,mm-wave circuits,aerosol jet printing,3D printing
更新于2025-09-23 15:22:29
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Aerosol Jet Printed Optical Waveguides for Short Range Communication
摘要： This article presents an innovative way for additive manufacturing of optical multimode waveguides for short range data transmission. By the use of aerosol jet printing between conditioning lines on flexible foils, low cost and low weight polymer optical waveguides can be easily fabricated. The main advantages – compared to other waveguide manufacturing techniques – are the maximum fabricable waveguide length (not limited by panel- or wafer size), technology costs and 3D-ability. Furthermore, the printing allows for very long structures, which are not limited to wafer or panel sizes. In order to classify the new manufacturing approach and compare it to other technologies such as photolithography, imprinting, dispensing and ion-exchange, results on the mechanical (shear strength) and optical performance (transmittance, near field and attenuation) are presented. In addition, the experimental results on the data transmission performance are important to prove the suitability of the waveguides for high-speed communication applications. In this context, nearly error-free transmission up to 10 Gbit/s was achieved at a wavelength of 850 nm.
关键词： optical multimode waveguide,additive manufacturing,shear test,aerosol jet printing,optical data transmission
更新于2025-09-23 15:21:01
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Thin Dielectric Layer Enabled Low Voltage Operation of Fully Printed Flexible Carbon Nanotube Thin Film Transistors
摘要： Quality of printable dielectric layer has become one of the major obstacles to achieve high performance fully printed transistors. A thick dielectric layer will require high gate voltage to switch on and off the transistors, which will cause high power dissipation in printed devices. In response to this challenge, fully printed carbon nanotube (CNT) based thin film transistors (TFTs) have been fabricated on flexible membranes such as polyimide and liquid crystal polymer using aerosol jet printing (AJP). These devices can be operated at bias voltages below ±10 V (drain/gate voltages around ±6 V). It is much smaller than the previously reported values for fully printed CNT-TFTs using xdi-dcs (mixture of poly(vinylphenol)/poly (methylsilsesquioxane)) as dielectric and using a single printing method. This is enabled because of thin dielectric layer (~300 nm) and good uniformity in printed CNT network. The printed CNT-TFTs show on/off ratio > 105, and mobility > 5 cm2V-1s-1. Layer-by-layer deposition of CNT allows highly uniform and dense network formation, and the optimization of the xdi-dcs concentration using natural butyl alcohol provides a high-yield printing of a thin dielectric layer. Collectively, this work shows a potential of using fully printed CNT-TFTs in various flexible electronic applications such as wearable sensors, actuators, artificial skins, displays and wireless tags and antennas.
关键词： xdi-dcs,aerosol jet printing,printed dielectric,flexible electronics,fully printed thin film transistors,carbon nanotube network
更新于2025-09-19 17:13:59
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34.3: <i>Invited Paper:</i> Printing Pixel Circuits on Light Emitting Diode Array for AMLED Displays
摘要： An active matrix light emitting display module integrated with carbon nanotubes control circuits was fully printed. The high performance of super pure single-chirality carbon nanotube TFT provides super bright and low power consumption technologies for indoor and outdoor augmented reality that are highly desirable for civil and military display applications.
关键词： Aerosol Jet Printing,Active Matrix LED Display Module,Single Chirality Semiconducting Single-Walled Carbon Nanotubes,Thin Film Transistors,Light Emitting Diode Array
更新于2025-09-16 10:30:52
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Non-Fullerene Based Printed Organic Photodiodes with High Responsivity and MHz Detection Speed
摘要： Digitally printed organic photodiodes (OPDs) are of great interest for the cost-efficient additive manufacturing of single and multi-device detection systems with full freedom of design. Recently reported high-performance non-fullerene acceptors (NFAs) can address the crucial demands of future applications in terms of high operational speed, tunable spectral response as well as device stability. Here, we present the first demonstration of inkjet and aerosol-jet printed OPDs based on the high-performance NFA, IDTBR, in combination with poly(3-hexylthiophene) (P3HT) exhibiting a spectral response up to the NIR. These digitally printed devices reach record responsivities up to 300 mA/W in the visible and NIR spectrum competing with current commercially available technologies based on Si. Furthermore, their fast dynamic response with cut-off frequencies surpassing 2 MHz outperforms most of the state-of the-art organic photodiodes. The successful process translation from spincoating to printing is highlighted by the marginal loss in performance compared to the reference devices, which reach responsivities of 400mA/W and detection speeds of more than 4 MHz. The achieved high device performance and the industrial relevance of the developed fabrication process provide NFAs with an enormous potential for the development of printed photodetection systems.
关键词： aerosol-jet printing,spectral responsivity,non-fullerene acceptor,inkjet printing,digital printing,organic photodiode
更新于2025-09-10 09:29:36
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[IEEE 2018 7th Electronic System-Integration Technology Conference (ESTC) - Dresden, Germany (2018.9.18-2018.9.21)] 2018 7th Electronic System-Integration Technology Conference (ESTC) - Compact LTCC Packaging and Printing Technologies for Sub–THz Modules
摘要： Low Temperature Co-fired Ceramics (LTCC) is a ceramic multilayer material with properties that suit well as both as a substrate and packaging material. LTCCs multilayer capabilities, excellent electrical properties, extremely high reliability and full hermetic nature suit it to a wide range of RF applications. Several frequency bands of interest from 100 GHz up to 300 GHz could potentially benefit from the use of LTCC system in package devices. To test the ability of LTCC materials at these frequencies, several grounded coplanar waveguide (GCPW) on 35-60 μm thick LTCC substrates were manufactured with the help of high-resolution Aerosol Jet printing technique and measured from 1-320 GHz (Ferro A6M-E) and 1-220 GHz, respectively (DuPont 9k7). For the first time, LTCC material are characterized as mm-wave circuit substrates at the frequency band of 220-320 GHz.
关键词： high frequency,MMIC,high resolution,LTCC,thick-film,Aerosol Jet printing,H-Band,radar
更新于2025-09-04 15:30:14