Fabrication of X-band Oscillator on LCP Substrate Using Aerosol Printing

2017 ◽  
Vol 2017 (1) ◽  
pp. 000052-000055
Author(s):  
Christopher Oakley ◽  
Premjeet Chahal ◽  
John Papapolymerou ◽  
John D. Albrecht
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Substrate Material ◽  
Metal Quality ◽  
Microstrip Resonator ◽  
Manufacturing Method ◽  
X Band ◽  
Jet Printing ◽  
Passive Circuit ◽  
Aerosol Jet Printing

Abstract This paper presents a low-cost additive manufacturing method for rapid prototyping of millimeter and microwave circuits using aerosol jet printing of silver nanoparticle ink deposited on commercially available liquid crystal polymer (LCP) substrate material. Two passive circuit elements, a 50 Ω microstrip transmission line and a band-stop microstrip resonator, were designed, fabricated and measured. These passive elements form the basis of a printed X-band transistor-based oscillator circuit in which all metal layers have been printed, including metalized vias. Impacts of via metallization quality on oscillator performance are obtained by comparing measured data and designs. We conclude that printed metal quality (conductivity, roughness and uniformity) is an important fabrication issue for obtaining high-performance 3D printed circuits.

A Flexible Ultrasensitive IgG-Modified rGO-Based FET Biosensor Fabricated by Aerosol Jet Printing

2015 ◽  
Vol 748 ◽  
pp. 157-161 ◽  
Author(s):  
Wei Yu ◽  
Pei Jie Cai ◽  
Rui Liu ◽  
Fang Ping Shen ◽  
Ting Zhang
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Drain Current ◽  
Flexible Sensors ◽  
Flexible Polymer ◽  
Low Concentrations ◽  
Rabbit Igg ◽  
Jet Printing ◽  
Aerosol Jet Printing ◽  
Flexible Polymer Substrate

High-performance biosensors are the key elements for rapid and real-time detection of specific biomolecules. Herein, an ultrasensitive FET biosensor on a flexible polymer substrate was reported, and the aerosol jet printing (AJP) method offers a unique way for low-cost mass manufacturing of the flexible sensors. The stable PBA functionalized rGO layer and the goat-anti-rabbit IgG layer on the rGO were both printed by AJP method between the source/drain electrodes. The flexibe biosensors exposure to low concentrations of target rabbit IgG showed dramatic increase in the source-drain current, which exhibited great sensing performance with the lowest detection limit of 13 fM.

Fabrication of a Carbon Nanotube Gas Sensor Microelectrodes and its Application for Ammonia Detection

2013 ◽  
Vol 431 ◽  
pp. 306-311
Author(s):  
Xiang Tao Ran ◽  
Zhi Wang ◽  
Li Yang
Keyword(s):  
Gas Sensors ◽  
High Performance ◽  
Gas Sensing ◽  
Structural Parameters ◽  
Low Cost ◽  
Manufacturing Method ◽  
Multi Walled Carbon Nanotubes ◽  
Ammonia Detection ◽  
Low Cost Manufacturing ◽  
Walled Carbon Nanotubes

With the increasing needs for high-performance gas sensors in industrial production, environmental monitoring and so on, the research on gas sensors is becoming more and more important. In this paper, the electric field intensity distribution simulation process of the interdigital microelectrodes (IMEs) is discussed in details to get the proper electrode structural parameters. The IMEs on the ITO surface with a minimum gap of about 4μm are achieved by lithography, which provides a reliable, low-cost manufacturing method. Sensitive components are made of the multi-walled carbon nanotubes modified materials. The gas-sensing property of the sensor is detected for ammonia. The experiment result shows that the performance of the nanomodified sensor is obviously improved.

Fan Shaped Patch with Fan Shaped Defected Ground Structure is designed for X-band Applications

2018 ◽  
Vol 8 (4) ◽  
pp. 57
Author(s):  
K.S. Ravi Kumar ◽  
Lalbabu Prasad ◽  
B. Ramesh ◽  
K.P. Vinay
Keyword(s):  
Dielectric Constant ◽  
Low Cost ◽  
Dielectric Substrate ◽  
Substrate Material ◽  
Frequency Range ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Band Region ◽  
X Band ◽  
Simulation Results

In this novel work a simple Fan Shaped Patch (FSP) Antenna is designed for X-band applications using Fan Shaped DGS structure to improve the Bandwidth and Gain. The Antenna is designed by using low cost FR4 Epoxy dielectric substrate material having dielectric constant of 4.4 with size 31.4x28.33x1.6mm3. The Antenna is simulated by using CST MW studio2014 software to analyze the results. The simulation results shows reasonable |S11|<-10 for the frequency range over 8.38 to 11.59GHz in X-band region.

scholarly journals Double slot aerosol jet printed antenna for X-band applications

2021 ◽  
Vol 2086 (1) ◽  
pp. 012047
Author(s):  
P V Arsenov ◽  
A S Sobolev ◽  
A A Efimov ◽  
V V Ivanov
Keyword(s):  
Slot Antenna ◽  
Printed Antenna ◽  
Central Frequency ◽  
Printed Antennas ◽  
Flexible Polymer ◽  
X Band ◽  
Microwave Losses ◽  
Jet Printing ◽  
Operating Bandwidth ◽  
Aerosol Jet Printing

Abstract A double slot antenna for X-band applications was designed and aerosol jet printing technology was used to fabricate the prototype with silver nano-ink on a flexible polyimide substrate. We investigated the microwave losses of printed antennas in the range from 100 kHz to 27 GHz, obtained at sintering temperatures of 200 °C and 250 °C. Double slot X-band antennas have been calculated and measured. It was found that an operating bandwidth of the printed antenna is 10% in the region of the central frequency of 10.5 GHz. Thus, the possibility of forming antennas on flexible polymer substrates with high functional characteristics by aerosol jet printing method has been demonstrated.

scholarly journals Design And Development of Inset Feed Microstrip Patch Antennas using Various Substrates

2019 ◽  
Vol 8 (9) ◽  
pp. 163-167
Keyword(s):  
Microstrip Antenna ◽  
Return Loss ◽  
Low Cost ◽  
Substrate Material ◽  
Patch Antennas ◽  
Microstrip Patch Antennas ◽  
Microstrip Patch ◽  
X Band ◽  
Materials Used ◽  
Rectangular Microstrip Antenna

Selecting an appropriate substrate material for the design of microstrip patch antenna for various applications is a very important step in antenna design. This paper presents a work of various substrates materials used for the design of low cost inset feed rectangular microstrip antenna for WLAN, WiMax, LTE, C-band and X-band applications. The substrates used are FR-4 epoxy, foam, polyethylene terephthalate (PET) and polydimethylsiloxane (PDMS). The antennas were designed, optimized and simulated using HFSS 15.0. Return loss, voltage standing wave ratio and gain analysis is carried out for these antennas. The measurement of reflection coefficient of the fabricated antennas is done using Agilent PNA-L series vector network analyzer. The simulated and measured results are well in agreement. The analysis show that antenna with foam substrate offers the lowest return loss of - 41.28 dB. Larger bandwidth and gain of 4.38 dB is observed with PET substrate.

A Computational Fluid Dynamics (CFD) Study of Pneumatic Atomization in Aerosol Jet Printing (AJP) Process

2019 ◽  
Author(s):  
Roozbeh (Ross) Salary ◽  
Jack P. Lombardi ◽  
Darshana L. Weerawarne ◽  
Prahalad K. Rao ◽  
Mark D. Poliks
Keyword(s):  
Process Monitoring ◽  
Nonlinear Process ◽  
Cfd Model ◽  
Monitoring And Control ◽  
Loop Control ◽  
Manufacturing Method ◽  
Aerosol Generation ◽  
Process Monitoring And Control ◽  
Jet Printing ◽  
Aerosol Jet Printing

Abstract Aerosol jet printing (AJP) is a direct-write additive manufacturing method, which has been utilized particularly for the fabrication of flexible and hybrid electronics (FHE). In spite of the advantages of AJP — e.g., high-resolution material deposition on nonplanar surfaces and accommodation of a wide renege of ink viscosity — AJP inherently is a complex process, prone to nonlinear process changes. Consequently, real-time process monitoring and control (with an understanding of the physics behind aerosol generation and transport) are inevitable. The overarching goal of this work is to establish a physics-based framework for process monitoring and closed-loop control (for correction) in AJP. In pursuit of this goal, the objective is to forward a CFD model to explain the underlying physical phenomena behind aerosol nebulization in AJP. To realize this objective, a 3D compressible, turbulent multi-phase flow CFD model is forwarded. The geometry of the pneumatic atomizer is modeled based on X-ray computed tomography (CT) imaging. The boundary conditions of the problem are defined based on experimental observations. The outcome of this study paves the way for understanding the complex mechanisms of aerosol generation in AJP and also design of efficient atomizers.

scholarly journals A Post-Treatment Method to Enhance the Property of Aerosol Jet Printed Electric Circuit on 3D Printed Substrate

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5602
Author(s):  
Bing Wang ◽  
Haining Zhang ◽  
Joon Phil Choi ◽  
Seung Ki Moon ◽  
Byunghoon Lee ◽  
...  
Keyword(s):  
Electrical Resistance ◽  
High Performance ◽  
Electronic Devices ◽  
Electric Circuit ◽  
Treatment Method ◽  
Post Treatment ◽  
Original Structure ◽  
Fused Deposition ◽  
Jet Printing ◽  
Aerosol Jet Printing

Aerosol jet printing of electronic devices is increasingly attracting interest in recent years. However, low capability and high resistance are still limitations of the printed electronic devices. In this paper, we introduce a novel post-treatment method to achieve a high-performance electric circuit. The electric circuit was printed with aerosol jet printing method on an ULTEM substrate. The ULTEM substrate was fabricated by the Fused Deposition Modelling method. After post-treatment, the electrical resistance of the printed electric circuit was changed from 236 mΩ to 47 mΩ and the electric property was enhanced. It was found that the reduction of electric resistance was caused by surface property changes. Different surface analysis methods including scanning electron microscopy (SEM) and x-ray photoelectron spectroscopy (XPS) were used to understand the effectiveness of the proposed method. The results showed that the microsurface structure remained the same original structure before and after treatment. It was found that the surface carbon concentration was significantly increased after treatment. Detailed analysis showed that the C-C bond increased obviously after treatment. The change of electrical resistance was found to be limited to the material’s surface. After polishing, the circuit resistance was changed back to its original value. As the electric circuit is the basic element of electric devices, the proposed method enables the fabrication of high performance devices such as capacitors, strain gauge, and other sensors, which has potential applications in many areas such as industrial, aerospace, and military usage.

scholarly journals Highly conductive electronics circuits from aerosol jet printed silver inks

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Kacper Skarżyński ◽  
Jakub Krzemiński ◽  
Małgorzata Jakubowska ◽  
Marcin Słoma
Keyword(s):  
Silver Nanoparticles ◽  
Printed Electronics ◽  
Bulk Material ◽  
Low Cost ◽  
Electrical Performance ◽  
Uniform Structure ◽  
Electrical Measurements ◽  
Jet Printing ◽  
Printed Patterns ◽  
Aerosol Jet Printing

AbstractRecently, low-cost electronics printed on lightweight, flexible and 3D shaped substrates are gaining importance in the markets of wearables and smart packaging. However, printed electronics do not meet the electrical performance of subtractive techniques because the resistivity of metallic printed patterns is still much higher than that of bulk material. To fulfil this need, low-resistive and easy printable inks for high resolution printed electronics techniques are needed. In this work, parameters of silver nanoparticles ink for micro-scale printed electronics technique, Aerosol Jet Printing, are being enhanced. To increase electrical conductivity and enhance printability, surfactants and dispersing agents were used to increase ultrasonic atomisation efficiency, obtain a uniform structure of printed lines, and narrow the width of printed patterns. Electrical measurements show a decrease in resistivity value in samples enhanced by cationic and non-ionic surfactants, by 95%, compared to initially prepared inks. Surfactant additions to silver nanoparticles Aerosol Jet Printing ink show promising features for application in modern electronics.

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