keyword
MENU ▼
Read by QxMD icon Read
search

flexible electronics

keyword
https://www.readbyqxmd.com/read/28822249/en-masse-pyrolysis-of-flexible-printed-circuit-board-wastes-quantitatively-yielding-environmental-resources
#1
Jang Won Kim, Albert S Lee, Seunggun Yu, Jeong Whan Han
This paper reports the recycling of flexible printed circuit board (FPCB) waste through carbonization of polyimide by dual pyrolysis processes. The organic matter was recovered as pyrolyzed oil at low temperatures, while valuable metals and polyimide-derived carbon were effectively recovered through secondary high temperature pyrolysis. The major component of organics extracted from FPCB waste comprised of epoxy resins were identified as pyrolysis oils containing bisphenol-A. The valuable metals (Cu, Ni, Ag, Sn, Au, Pd) in waste FPCB were recovered as granular shape and quantitatively analyzed via ICP-OES...
August 8, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28821043/effect-of-moderate-electric-fields-in-the-properties-of-starch-and-chitosan-films-reinforced-with-microcrystalline-cellulose
#2
Caroline C S Coelho, Miguel A Cerqueira, Ricardo N Pereira, Lorenzo M Pastrana, Otniel Freitas-Silva, António A Vicente, Lourdes M C Cabral, José A Teixeira
Microcrystalline cellulose (MCC) can provide improved properties when the aim is the development of biodegradable packaging materials. In this work the physicochemical properties of polysaccharide-based films (chitosan and starch) with the incorporation of MCC and the application of moderate electric field (MEF) and ultrasonic bath (UB) as treatments, were evaluated. For each treatment, the thickness, moisture content, solubility, water vapor permeability, contact angle, mechanical properties, along with its color and opacity were determined...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28820238/combustion-assisted-photonic-annealing-of-printable-graphene-inks-via-exothermic-binders
#3
Ethan B Secor, Theodore Z Gao, Manuel H Dos Santos, Shay G Wallace, Karl W Putz, Mark C Hersam
High-throughput and low-temperature processing of high performance nanomaterial inks is an important technical challenge for large-area, flexible printed electronics. In this report, we demonstrate nitrocellulose as an exothermic binder for photonic annealing of conductive graphene inks, leveraging the rapid decomposition kinetics and built-in energy of nitrocellulose to enable versatile process integration. This strategy results in superlative electrical properties that are comparable to extended thermal annealing at 350 °C, using a pulsed light process that is compatible with thermally sensitive substrates...
August 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28817099/sintering-inhibition-of-silver-nanoparticle-films-via-agcl-nanocrystal-formation
#4
Thomas Öhlund, Magnus Hummelgård, Håkan Olin
Electrically conductive films are key components in most printed and flexible electronics applications. For the solution processing of conductive films, inks containing silver nanoparticles (AgNPs) remain important because of their relatively easy processing and generally low resistivity after a sintering procedure. Because the commonly used, moderate sintering temperatures of 150-300 °C are still too high for most low-cost flexible substrates, expanding the knowledge of surface-ink interactions that affect the sintering temperature is desirable...
August 17, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28817090/insights-on-the-optical-properties-of-poly-3-4-ethylenedioxythiophene-poly-styrenesulfonate-formulations-by-optical-metrology
#5
Argiris Laskarakis, Varvara Karagkiozaki, Despoina Georgiou, Christoforos Gravalidis, Stergios Logothetidis
Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is among the most widely used polymers that are used as printed transparent electrodes for flexible Organic Electronic (OE) devices, such as Organic Photovoltaics (OPVs). The understanding of their optical properties and the correlation of the optical properties with their electronic properties and metallic-like behavior can lead to the optimization of their functionality as transparent electrodes in multilayer OE device architectures. In this work, we study the optical properties of different PEDOT:PSS formulations by non-destructive Spectroscopic Ellipsometry (SE), from the infrared to the far ultraviolet spectral regions...
August 17, 2017: Materials
https://www.readbyqxmd.com/read/28816043/electronic-muscles-and-skins-a-review-of-soft-sensors-and-actuators
#6
Dustin Chen, Qibing Pei
This article reviews several classes of compliant materials that can be utilized to fabricate electronic muscles and skins. Different classes of materials range from compliant conductors, semiconductors, to dielectrics, all of which play a vital and cohesive role in the development of next generation electronics. This paper covers recent advances in the development of new materials, as well as the engineering of well-characterized materials for the repurposing in applications of flexible and stretchable electronics...
August 17, 2017: Chemical Reviews
https://www.readbyqxmd.com/read/28815142/a-data-capture-framework-for-large-scale-interventional-studies-with-survey-workflow-management
#7
Shiqiang Tao, Ningzhou Zeng, Xi Wu, Xiaojin Li, Wei Zhu, Licong Cui, G Q Zhang
Capturing high-quality survey data is an arduous process for large-scale and extensive interventional studies. This paper presents the architecture, interface design, and an innovative form generation engine of a system called RE- Form: Refactorized Electronic Web Forms. REForm provides researchers the capability to design and manage surveys and the flexibility to organize them in a customizable workflow. REForm has been designed, implemented, pilot-tested and deployed for an NCI-funded interventional study IMPACT...
2017: AMIA Summits on Translational Science Proceedings
https://www.readbyqxmd.com/read/28814505/the-molecular-architecture-of-the-yeast-spindle-pole-body-core-determined-by-bayesian-integrative-modeling
#8
Shruthi Viswanath, Massimiliano Bonomi, Seung Joong Kim, Vadim A Klenchin, Keenan C Taylor, King C Yabut, Neil T Umbreit, Heather A Van Epps, Janet Meehl, Michele H Jones, Daniel Russel, Javier A Velazquez-Muriel, Mark Winey, Ivan Rayment, Trisha N Davis, Andrej Sali, Eric G Muller
Microtubule organizing centers (MTOCs) form, anchor and stabilize the polarized network of microtubules in a cell. The central MTOC is the centrosome that duplicates during the cell cycle and during mitosis assembles a bipolar spindle to capture and segregate sister chromatids. Yet, despite their importance in cell biology, the physical structure of MTOCs is poorly understood. Here we determine the molecular architecture of the core of the yeast spindle pole body (SPB) by Bayesian integrative structure modeling based on in vivo FRET, small-angle X-ray scattering (SAXS), X-ray crystallography, electron microscopy and two-hybrid analysis...
August 16, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28812871/high-performance-porous-molybdenum-oxynitride-based-fiber-supercapacitors
#9
Dan Ruan, Rui Lin, Kui Jiang, Xiang Yu, Yaofeng Zhu, Yaqin Fu, Zilong Wang, He Yan, Wenjie Mai
Scalable manufacturing of flexible, fiber-shaped energy storage devices has enabled great technological advances in wearable and portable technology. Replacing inefficient oxides with inexpensive and high-performance oxynitrides with more favourable 3D structures is critical if the practical applications of these technologies are to be realised. Here we developed a facile and controllable approach for the synthesis of 3D porous micropillars of molybdenum oxynitride, which exhibit high conductivity, robust stability and excellent energy storage properties...
August 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28812089/large-scale-all-polycrystalline-diamond-structures-transferred-onto-flexible-parylene-c-films-for-neurotransmitter-sensing
#10
Bin Fan, Yan Zhu, Robert Rechenberg, Cory A Rusinek, Michael F Becker, Wen Li
Boron-doped diamond (BDD) has superior electrochemical properties for bioelectronic systems. However, due to its high synthesis temperature, traditional microfabrication methods have limits to integrating BDD with emerging classes of flexible, polymer-based bioelectronic systems. This paper introduces a novel fabrication solution to this challenge, which features (i) a wafer-scale substrate transfer process with all diamond structures transferred onto a flexible Parylene-C substrate and (ii) Parylene anchors introduced to strengthen the bonding between BDD and Parylene substrates, as demonstrated by a peeling test...
August 16, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28811590/structural-analysis-of-wss1-protein-from-saccharomyces-cerevisiae
#11
Xiaoyun Yang, Yanhua Li, Zengqiang Gao, Zongqiang Li, Jianhua Xu, Wenjia Wang, Yuhui Dong
Wss1 is a DNA-protein crosslinks (DPCs) repair protein, which is responsible for degradation of the protein components in DPCs. In this investigation, crystal structure of the protease domain from saccharomyces cerevisiae Wss1 (ScWss1) was solved and was compared with the known crystal structure of Schizosaccharomyces prombe Wss1 (SpWss1). It is found that the cleft near zinc ion to be the most conserved core region of Wss1 and that the electronic surface distributions vary greatly between the two homologs...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28810743/layer-by-layer-molecular-assemblies-for-dye-sensitized-pho-toelectrosynthesis-cells-prepared-by-atomic-layer-deposi-tion
#12
Degao Wang, Matthew V Sheridan, Bing Shan, Byron H Farnum, Seth L Marquard, Benjamin D Sherman, Michael S Eberhart, Animesh Nayak, Christopher Dares, Atanu Das, R Morris Bullock, Thomas J Meyer
In a Dye Sensitized Photoelectrosynthesis Cell (DSPEC) the relative orientation of the catalyst and chromophore plays an important role in determining the device efficiency. Here we introduce a new, robust atomic layer deposition (ALD) procedure for the preparation of molecular chromophore-catalyst assemblies on wide bandgap semiconductors. In this procedure, solution deposited, phosphonate derivatized metal complexes on metal oxide surfaces are treated with reactive metal reagents in the gas phase by ALD to form an outer metal ion bridging group which can bind a second phosphonate containing species from solution to establish a R1-PO2-O-M-O-PO2-R2 type surface assembly...
August 15, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28810131/prescription-opioid-registry-protocol-in-an-integrated-health-system
#13
G Thomas Ray, Amber L Bahorik, Paul C VanVeldhuisen, Constance M Weisner, Andrea L Rubinstein, Cynthia I Campbell
OBJECTIVES: To establish a prescription opioid registry protocol in a large health system and to describe algorithms to characterize individuals using prescription opioids, opioid use episodes, and concurrent use of sedative/hypnotics. STUDY DESIGN: Protocol development and retrospective cohort study. METHODS: Using Kaiser Permanente Northern California (KPNC) electronic health record data, we selected patients using prescription opioids in 2011...
May 1, 2017: American Journal of Managed Care
https://www.readbyqxmd.com/read/28809109/characterization-of-rotational-stacking-layers-in-large-area-mose2-film-grown-by-molecular-beam-epitaxy-and-interaction-with-photon
#14
Yoon-Ho Choi, Dong-Hyeok Lim, Jae-Hun Jeong, Dambi Park, Kwang-Sik Jeong, Minju Kim, Aeran Song, Hee-Suk Chung, Kwun-Bum Chung, Yeonjin Yi, Mann-Ho Cho
Transition metal dichalcogenides (TMDCs) are promising next-generation materials for optoelectronic devices because, at sub-nanometer thicknesses, they have a transparency, flexibility, and band gap in the near-infrared to visible light range. In this study, we examined continuous, large-area MoSe2 film, grown by molecular beam epitaxy on an amorphous SiO2/Si substrate, which facilitated direct device fabrication without exfoliation. Spectroscopic measurements were implemented to verify the formation of a homogeneous MoSe2 film by performing mapping on the micrometer scale and measurements at multiple positions...
August 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28806516/scalable-and-facile-preparation-of-highly-stretchable-electrospun-pedot-pss-pu-fibrous-nonwovens-towards-wearable-conductive-textile-applications
#15
Yichun Ding, Wenhui Xu, Wenyu Wang, Hao Fong, Zhengtao Zhu
Flexible and stretchable conductive textiles are highly desired for potential applications in wearable electronics. This study demonstrates a scalable and facile preparation of all-organic nonwoven that is mechanically stretchable and electrically conductive. Polyurethane (PU) fibrous nonwoven is prepared via the electrospinning technique; in the following step, the electrospun PU nonwoven is dip-coated with the conducting polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). This simple method enables convenient preparation of PEDOT:PSS@PU nonwovens with initial sheet resistance in the range of 35~240 Ω/ sq (i...
August 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28805366/simultaneous-top-and-bottom-perovskite-interface-engineering-by-fullerene-surface-modification-of-titanium-dioxide-as-electron-transport-layer
#16
John Ciro, Santiago Mesa, Juan Felipe Montoya, Jose Ignacio Uribe, Rafael Betancur, Franklin Jaramillo
Optimization of the interface between the electron transport layer (ETL) and hybrid perovskite is crucial to achieve high performance perovskite solar cell (PSC) devices. Fullerene-based compounds have attracted attention as modifiers on the surface properties of TiO2, the archetypal ETL in regular n-i-p PSCs. However, the partial solubility of fullerenes in the aprotic solvents used for perovskite deposition hinders its application to low-temperature solution-processed PSCs. In this work, we introduce a new method for fullerene modification of TiO2 layers derived from nanoparticles (NPs) inks...
August 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28804678/capacitively-coupled-arrays-of-multiplexed-flexible-silicon-transistors-for-long-term-cardiac-electrophysiology
#17
Hui Fang, Ki Jun Yu, Christopher Gloschat, Zijian Yang, Chia-Han Chiang, Jianing Zhao, Sang Min Won, Siyi Xu, Michael Trumpis, Yiding Zhong, Enming Song, Seung Won Han, Yeguang Xue, Dong Xu, Gert Cauwenberghs, Matthew Kay, Yonggang Huang, Jonathan Viventi, Igor R Efimov, John A Rogers
Advanced capabilities in electrical recording are essential for the treatment of heart-rhythm diseases. The most advanced technologies use flexible integrated electronics; however, the penetration of biological fluids into the underlying electronics and any ensuing electrochemical reactions pose significant safety risks. Here, we show that an ultrathin, leakage-free, biocompatible dielectric layer can completely seal an underlying layer of flexible electronics while allowing for electrophysiological measurements through capacitive coupling between tissue and the electronics, and thus without the need for direct metal contact...
2017: Nature biomedical engineering
https://www.readbyqxmd.com/read/28802395/changes-in-pediatric-tracheostomy-tubes-exposed-to-home-dishwashing
#18
David E Smolar, Brian Ho, Steven M Kent, C Anthony Hughes, Donald Mettenburg, Fredrick A Rueggeberg, Michael W Groves
OBJECTIVE: Determine the effects of household dishwashing on Tracheostomy Tube safety. INTRODUCTION: Tracheostomy tubes accumulate biofilms, which may limit their lifespan. Frequent cleaning of the tubes is a method for biofilm prevention. Cleaning practices vary widely. Some families prefer dishwashing of tubes, but its effects are currently unknown. We hypothesize that dishwashing has no significant effect on the physical properties of tracheostomy tubes and can be recommended as a safe way to clean tracheostomy tubes...
September 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28802194/direct-laser-writing-of-micro-supercapacitors-on-thick-graphite-oxide-films-and-their-electrochemical-properties-in-different-liquid-inorganic-electrolytes
#19
Rajesh Kumar, Ednan Joanni, Rajesh K Singh, Everson T S G da Silva, Raluca Savu, Lauro T Kubota, Stanislav A Moshkalev
In this article we demonstrate a simple approach to fabricate interdigitated in-plane electrodes for flexible micro-supercapacitors (MSCs). A nanosecond ultraviolet laser treatment is used to reduce and pattern the electrodes on thick graphite oxide (GO) freestanding films. These laser-treated regions obtained by direct writing provide the conducting channels for electrons in the capacitors. The electrochemical performance of the MSCs was evaluated in the presence of two different electrolytes and they exhibit characteristics of nearly electrical double layer capacitors...
August 3, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28801930/conformationally-flexible-bis-9-fluorenylidene-porphyrin-diradicaloids
#20
Jishan Wu, Hejian Zhang, Hoa Phan, Tun Seng Herng Herng, Tullimilli Y Gopalakrishna, Wangdong Zeng, Jun Ding
A stable 5,10-bis(9-fluorenylidene)porphyrin (Por-Fl) diradicaloid was synthesized. It shows a quinoidal, saddle-shaped geometry in single crystal but can be thermally populated to triplet diradical both in solution and in solid state. Coordination with Ni2+ ion (Por-Fl-Ni) does not significantly change the contorted conformation but reduces the singlet-triplet gap. Heat-induced geometric change can explain the observed paramagnetic properties as well as unusual hysteresis in SQUID measurements. On the other hand, protonation (Por-Fl-2H+) dramatically changes the conformation while maintains the closed-shell electronic structure...
August 12, 2017: Angewandte Chemie
keyword
keyword
49343
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"