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printed electronics

Kristy Marynak, Andrea Gentzke, Teresa W Wang, Linda Neff, Brian A King
Electronic cigarettes (e-cigarettes) are the most commonly used tobacco product among U.S. middle and high school students (1). Exposure to e-cigarette advertisements is associated with higher odds of current e-cigarette use among middle and high school students (2-4). To assess patterns of self-reported exposure to four e-cigarette advertising sources (retail stores, the Internet, television, and newspapers and magazines), CDC analyzed data from the 2014, 2015, and 2016 National Youth Tobacco Surveys (NYTSs)...
March 16, 2018: MMWR. Morbidity and Mortality Weekly Report
Jong-In Kim, Hee-Jung Kim, Jung Ju Lee, Ji Hee Jun, Tae-Young Choi, Myeong Soo Lee
BACKGROUND: The ability of acupuncture to successfully control pain has been reported in the past. However, currently no systematic reviews exist regarding the effect of acupuncture on trigeminal neuralgia (TN). This proposed review aims to evaluate the current evidence on the efficacy of acupuncture for the management of pain in TN. METHODS: A total of 11 databases were searched from their inception. These include MEDLINE, AMED, EMBASE, the Cochrane Library, 6 Korean medical databases, and 1 Chinese Medical Database...
March 2018: Medicine (Baltimore)
Zheng Cui, Yiwei Han, Qijin Huang, Jingyan Dong, Yong Zhu
A silver nanowire (AgNW) based conductor is a promising component for flexible and stretchable electronics. A wide range of flexible/stretchable devices using AgNW conductors has been demonstrated recently. High-resolution, high-throughput printing of AgNWs remains a critical challenge. Electrohydrodynamic (EHD) printing has been developed as a promising technique to print different materials on a variety of substrates with high resolution. Here, AgNW ink was developed for EHD printing. The printed features can be controlled by several parameters including AgNW concentration, ink viscosity, printing speed, stand-off distance, etc...
March 14, 2018: Nanoscale
Ruike Zhao, Shaoting Lin, Hyunwoo Yuk, Xuanhe Zhao
Structures of thin films bonded on substrates have been used in technologies as diverse as flexible electronics, soft robotics, bio-inspired adhesives, thermal-barrier coatings, medical bandages, wearable devices and living devices. The current paradigm for maintaining adhesion of films on substrates is to make the films thinner, and more compliant and adhesive, but these requirements can compromise the function or fabrication of film-substrate structures. For example, there are limits on how thin, compliant and adhesive epidermal electronic devices can be fabricated and still function reliably...
March 14, 2018: Soft Matter
Michael A Luzuriaga, Danielle R Berry, John C Reagan, Ronald A Smaldone, Jeremiah J Gassensmith
Biodegradable polymer microneedle (MN) arrays are an emerging class of transdermal drug delivery devices that promise a painless and sanitary alternative to syringes; however, prototyping bespoke needle architectures is expensive and requires production of new master templates. Here, we present a new microfabrication technique for MNs using fused deposition modeling (FDM) 3D printing using polylactic acid, an FDA approved, renewable, biodegradable, thermoplastic material. We show how this natural degradability can be exploited to overcome a key challenge of FDM 3D printing, in particular the low resolution of these printers...
March 14, 2018: Lab on a Chip
Yuqing Zhang, Xinyu Zhou, Lining Yang, Sarah E Hetrick, John R Weisz, Pim Cuijpers, Jürgen Barth, Cinzia Del Giovane, Shuai Yuan, David Cohen, Donna Gillies, Xiaofeng Jiang, Teng Teng, Peng Xie
INTRODUCTION: Post-traumatic stress disorder (PTSD) is common among children and adolescents who are exposed to trauma, and it is often associated with significant negative impacts on their psychosocial functioning and quality of life. Many types of psychotherapies have been found to be effective for PTSD in children and adolescents. However, due to the lack of direct comparisons between different psychotherapies, the hierarchy of treatment efficacy is still unclear. Therefore, we plan to conduct a systematic review and network meta-analysis to evaluate the efficacy and acceptability of various types of psychotherapies for PTSD in children and adolescents...
March 12, 2018: BMJ Open
Okan Yurduseven, Daniel L Marks, Thomas Fromenteze, David R Smith
We present a reconfigurable, dynamic beam steering holographic metasurface aperture to synthesize a microwave camera at K-band frequencies. The aperture consists of a 1D printed microstrip transmission line with the front surface patterned into an array of slot-shaped subwavelength metamaterial elements (or meta-elements) dynamically tuned between "ON" and "OFF" states using PIN diodes. The proposed aperture synthesizes a desired radiation pattern by converting the waveguide-mode to a free space radiation by means of a binary modulation scheme...
March 5, 2018: Optics Express
Amy J Spooner, Leanne M Aitken, Wendy Chaboyer
BACKGROUND: Miscommunication during handover has been linked to adverse patient events and is an international patient safety priority. Despite the development of handover resources, standardized handover tools for nursing team leaders (TLs) in intensive care are limited. AIMS: The study aim was to implement and evaluate an evidence-based electronic minimum data set for nursing TL shift-to-shift handover in the intensive care unit using the knowledge-to-action (KTA) framework...
March 8, 2018: Worldviews on Evidence-based Nursing
Hui Pan, Da-Wei Wang, Qingfa Peng, Jun Ma, Xin Meng, Yaopeng Zhang, Yuning Ma, Shenmin Zhu, Di Zhang
The miniaturization of portable electronic devices has fueled the development of microsupercapacitors that hold great potential to complement or even to replace microbatteries and electrolytic capacitors. In spite of recent development taking advantage of printing and lithography, it remains a great challenge to attain high energy density without sacrificing power density. Herein, a new protocol mimicking the spider's spinning process is developed to create highly oriented microfibers from graphene-based composite via a purpose-designed microfluidic chip...
March 7, 2018: ACS Applied Materials & Interfaces
Steven Nagels, Wim Deferme
Stretchable electronics promise to naturalize the way that we are surrounded by and interact with our devices. Sensors that can stretch and bend furthermore have become increasingly relevant as the technology behind them matures rapidly from lab-based workflows to industrially applicable production principles. Regardless of the specific materials used, creating stretchable conductors involves either the implementation of strain reliefs through insightful geometric patterning, the dispersion of stiff conductive filler in an elastomeric matrix, or the employment of intrinsically stretchable conductive materials...
March 3, 2018: Materials
Anders Fredrik Elfwing, Wanzhu Cai, Liangqi Ouyang, Xianjie Liu, Yuxin Xia, Zheng Tang, Olle Inganäs
A new solution processable electron transport material (ETM) is introduced for use in photovoltaic devices, which consists of a metallic conjugated polyelectrolyte, poly(4-(2,3-dihydrothieno[3,4- b][1,4]dioxin-2-yl-methoxy)-1-butanesulfonic acid (PEDOT-S), and surfactant-functionalized deoxyribonucleic acid (DNA) (named DNA: CTMA: PEDOT-S). This ETM is demonstrated to effectively work for bulk-heterojunction organic photovoltaic devices (OPV) based on different electron acceptor materials. The fill factor, open circuit voltage and the overall power conversion efficiency of the solar cells with a DNA: CTMA: PEDOT-S modified cathode are comparable to that of devices with a traditional Lithium fluoride/Aluminum cathode...
March 5, 2018: ACS Applied Materials & Interfaces
Ju Ah Lee, Soobin Jang, Ji Hee Jun, Myeong Soo Lee, Eunhee Lee, Namkwen Kim, Dong Hyo Lee
BACKGROUND: Bojungikki-tang, a herbal medicine for strengthening the digestive system, has been widely used in East Asian countries since the Yuan Dynasty in China. Moreover, Bojungikki-tang has reportedly exhibited anti-allergy effects in many clinical trials. This systematic review will assess the effectiveness and safety of Bojungikki-tang for allergic rhinitis (AR). METHODS AND ANALYSIS: Eleven databases, including Asian databases, will be searched for studies conducted through October 2017...
January 2018: Medicine (Baltimore)
Shanshan Wei, Gang Qu, Guanyi Luo, Yuxing Huang, Huisheng Zhang, Xuechang Zhou, Liqiu Wang, Zhou Liu, Tiantian Kong
Creating complex three-dimensional structures from soft yet durable materials enables advances in fields, such as flexible electronics, regenerating tissue engineering and soft robotics. The tough-hydrogels that mimic the human skin can bear enormous mechanical loads. By employing a spider-inspired biomimetic microfluidic-nozzle, we successfully achieve the continuous-printing of tough-hydrogels into fibers, 2D networks and even 3D structures without compromising its extreme mechanical properties. The resultant thin fibers demonstrate a stretch up to 21 at a water content of 52%, and are intrinsically transparent, biocompatible, and conductive at high stretches...
March 5, 2018: ACS Applied Materials & Interfaces
Eda Yuhana Ariffin, Yook Heng Lee, Dedi Futra, Ling Ling Tan, Nurul Huda Abd Karim, Nik Nuraznida Nik Ibrahim, Asmat Ahmad
A novel electrochemical DNA biosensor for ultrasensitive and selective quantitation of Escherichia coli DNA based on aminated hollow silica spheres (HSiSs) has been successfully developed. The HSiSs were synthesized with facile sonication and heating techniques. The HSiSs have an inner and an outer surface for DNA immobilization sites after they have been functionalized with 3-aminopropyltriethoxysilane. From field emission scanning electron microscopy images, the presence of pores was confirmed in the functionalized HSiSs...
March 5, 2018: Analytical and Bioanalytical Chemistry
Guillermo Suarez-Cuartin, Jordi Giner, José Luis Merino, Ana Rodrigo-Troyano, Anna Feliu, Lidia Perea, Ferran Sanchez-Reus, Diego Castillo, Vicente Plaza, James D Chalmers, Oriol Sibila
RATIONALE: Airway colonization by Potentially Pathogenic Microorganisms (PPM) in bronchiectasis is associated with worse clinical outcomes. The electronic nose is a non-invasive technology capable of distinguishing volatile organic compounds (VOC) in exhaled breath. We aim to explore if an electronic nose can reliably discriminate airway bacterial colonization in patients with bronchiectasis. METHODS: Seventy-three clinically stable bronchiectasis patients were included...
March 2018: Respiratory Medicine
B Molinero-Abad, D Izquierdo, L Pérez, I Escudero, M J Arcos-Martínez
An anodic stripping voltammetric method is reported in this study for the determination of sub-nanomolar Pb concentration using disposable sensors, each consisting of three (counter, working and reference) screen-printed electrodes. Sensor performance was optimized for the determination of Pb through several surface modifications, by using single-walled carbon nanotubes, electro-reduced graphene oxide and gold nanoparticles. A scanning electron microscopy study of the deposition of electrogenerated gold nanoparticles of various sizes on the working electrode surface showed that spherical nanoparticles of around 100 nm provided the best results...
May 15, 2018: Talanta
Lakkavarapu Suresh, Pradeep Kumar Brahman, Kasarla Ramakrushna Reddy, Bondili J S
In this study, we have developed an electrochemical immunosensor for the detection of prostate-specific antigen (PSA) based on gold nanoparticles (AuNPs) and a chitosan (CHI) nanocomposite film coated on a screen printed electrode (SPE). The modified SPE was characterized using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The immunosensor was fabricated by sequential immobilization of anti-PSA primary antibody, PSA antigen and HRP-tagged secondary antibody on the surface of AuNPs/CHI/SPE...
May 2018: Enzyme and Microbial Technology
Sean E Doris, Adrien Pierre, Robert A Street
In recent years, organic electrochemical transistors (OECTs) have found applications in chemical and biological sensing and interfacing, neuromorphic computing, digital logic, and printed electronics. However, the incorporation of OECTs in practical electronic circuits is limited by the relative lack of control over their threshold voltage, which is important for controlling the power consumption and noise margin in complementary and unipolar circuits. Here, the threshold voltage of OECTs is precisely tuned over a range of more than 1 V by chemically controlling the electrochemical potential at the gate electrode...
March 2, 2018: Advanced Materials
Stefano Lai, Fabrizio Antonio Viola, Piero Cosseddu, Annalisa Bonfiglio
Organic Field-Effect Transistors (OFETs) are attracting a rising interest for the development of novel kinds of sensing platforms. In this paper, we report about a peculiar sensor device structure, namely Organic Charge-Modulated Field-Effect Transistor (OCMFET), capable of operating at low voltages and entirely fabricated with large-area techniques, i.e., inkjet printing and chemical vapor deposition, that can be easily upscaled to an industrial size. Device fabrication is described, and statistical characterization of the basic electronic parameters is reported...
February 26, 2018: Sensors
Sichao Tong, Jia Sun, Junliang Yang
Thin film transistors (TFTs) have experienced tremendous development during the past decades and show great potential applications in flat displays, sensors, radio frequency identification tags, logic circuit, and so on. The printed TFTs are the key components for rapid development and commercialization of printed electronics. The researchers in China play important roles to accelerate the development and commercialization of printed TFTs. In this review, we comprehensively summarize the research progress of printed TFTs on rigid and flexible substrates from China...
March 1, 2018: ACS Applied Materials & Interfaces
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