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Craig A Milroy, Seonpil Jang, Toshihiko Fujimori, Ananth Dodabalapur, Arumugam Manthiram
Improved thin-film microbatteries are needed to provide appropriate energy-storage options to power the multitude of devices that will bring the proposed "Internet of Things" network to fruition (e.g., active radio-frequency identification tags and microcontrollers for wearable and implantable devices). Although impressive efforts have been made to improve the energy density of 3D microbatteries, they have all used low energy-density lithium-ion chemistries, which present a fundamental barrier to miniaturization...
January 11, 2017: Small
Zhinian Li, Lei He, Shenliang Wang, Wuzhong Yi, Shihui Zou, Liping Xiao, Jie Fan
The development of efficient catalyst for oxidative coupling of methane (OCM) reaction represents a grand challenge in direct conversion of methane into other useful products. Here, we reported that a newly developed combinatorial approach can be used for ultrafast optimization of La2O3-based multicomponent metal oxide catalysts in OCM reaction. This new approach integrated inkjet printing assisted synthesis (IJP-A) with multidimensional group testing strategy (m-GT) tactfully takes the place of conventionally high-throughput synthesis-and-screen experiment...
January 9, 2017: ACS Combinatorial Science
Chaelin Kim, Ka Young Kim, Ji Ha Lee, Junho Ahn, Kazuo Sakurai, Shim Sung Lee, Jong Hwa Jung
We report the correlation between the luminescence intensity and the helical pitch of supramolecular hydrogels with Tb(III) and Eu(III) as well as their inkjet printing patterning as an application. The luminescent gels, which exhibited three different emissions of red, green, and blue, could be prepared without and with Eu(III) and Tb(III). The luminescence intensity of supramolecular gels (gel-Tb and gel-Eu) composed of Tb(III) and Eu(III) was ca. 3 fold larger than that of the sol (1+Tb(III) or 1+Eu(III)), which was attributed to large tilting angles between molecules...
January 6, 2017: ACS Applied Materials & Interfaces
Alvaro Ortiz Pérez, Vera Kallfaß-de Frenes, Alexander Filbert, Janosch Kneer, Benedikt Bierer, Pirmin Held, Philipp Klein, Jürgen Wöllenstein, Dirk Benyoucef, Sigrid Kallfaß, Ulrich Mescheder, Stefan Palzer
This manuscript describes the design considerations, implementation, and laboratory validation of an odor sensing module whose purpose is to support people that suffer from incontinence. Because of the requirements expressed by the affected end-users the odor sensing unit is realized as a portable accessory that may be connected to any pre-existing smart device. We have opted for a low-cost, low-power consuming metal oxide based gas detection approach to highlight the viability of developing an inexpensive yet helpful odor recognition technology...
December 29, 2016: Sensors
Sebastian Meyer, Duy Vu Pham, Sonja Merkulov, Dennis Weber, Alexey Merkulov, Niels Benson, Roland Schmechel
Semiconductor inks containing an indium-based oxo alkoxide precursor material were optimized regarding rheology requirements for a commercial 10 pL inkjet printhead. The rheological stability is evaluated by measuring the dynamic viscosity of the formulations for 12 hours with a constant shear rate stress under ambient conditions. It is believed that the observed superior stability of the inks is the result of effectively suppressing the hydrolysis and condensation reaction between the metal oxo alkoxide precursor complex and atmospheric water...
December 29, 2016: ACS Applied Materials & Interfaces
Jungmi Lee, Annie Agnes Suganya Samson, Joon Myong Song
An accurate, rapid, and cost-effective methodology for enzyme inhibitor assays is highly needed for large-scale screening to evaluate the efficacy of drugs at the molecular level. For the first time, we have developed an inkjet printing-based enzyme inhibition assay for the assessment of drug activity using a conventional inkjet printer composed of four cartridges. The methodology is based on the determination of the number of mole of the drug on the printed surface. The number of mole was quantified through the volume of substance ejected onto the printed surface...
December 27, 2016: Analytical Chemistry
Prinjaporn Teengam, Weena Siangproh, Adisorn Tuantranont, Charles S Henry, Tirayut Vilaivan, Orawon Chailapakul
A novel paper-based electrochemical biosensor was developed using an anthraquinone-labeled pyrrolidinyl peptide nucleic acid (acpcPNA) probe (AQ-PNA) and graphene-polyaniline (G-PANI) modified electrode to detect human papillomavirus (HPV). An inkjet printing technique was employed to prepare the paper-based G-PANI-modified working electrode. The AQ-PNA probe baring a negatively charged amino acid at the N-terminus was immobilized onto the electrode surface through electrostatic attraction. Electrochemical impedance spectroscopy (EIS) was used to verify the AQ-PNA immobilization...
February 1, 2017: Analytica Chimica Acta
Zhaoyao Zhan, Jianing An, Yuefan Wei, Van Thai Tran, Hejun Du
Inkjet printing is a powerful and cost-effective technique for deposition of liquid inks with high accuracy, which is not only of great significance for graphic applications but also has enormous potential for the direct printing of optoelectronic devices. This review highlights a comprehensive overview of the progress that has been made in optoelectronics fabrication by the inkjet printing technique. The first part briefly covers the droplet-generation process in the nozzles of printheads and the physical properties affecting droplet formation and the profiles of the printed patterns...
December 23, 2016: Nanoscale
Li-Sheng Wang, Bradley Duncan, Rui Tang, Yi-Wei Lee, Brian Creran, Sukru Gokhan Elci, Jiaxin Zhu, Gülen Yesilbag Tonga, Jesse Doble, Matthew Fessenden, Mahin Bayat, Stephen Nonnenmann, Richard W Vachet, Vincent M Rotello
Protein-based biomaterials provide versatile scaffolds for generating functional surfaces for biomedical applications. However, tailoring the functional and biological properties of protein films remains a challenge. Here, we describe a high-throughput method to designing stable, functional biomaterials by combining inkjet deposition of protein inks with a nanoimprint lithography based methodology. The translation of the intrinsically charged proteins into functional materials properties was demonstrated through controlled cellular adhesion...
December 28, 2016: ACS Applied Materials & Interfaces
Yunnan Fang, Jimmy G D Hester, Wenjing Su, Justin H Chow, Suresh K Sitaraman, Manos M Tentzeris
A bio-enabled, environmentally-friendly, and maximally mild layer-by-layer approach has been developed to surface modify inherently hydrophobic Kapton HN substrates to allow for great printability of both water- and organic solvent-based inks thus facilitating the full-inkjet-printing of flexible electronic devices. Different from the traditional Kapton surface modification approaches which are structure-compromising and use harsh conditions to target, and oxidize and/or remove part of, the surface polyimide of Kapton, the present Kapton surface modification approach targeted the surface electric charges borne by its additive particles, and was not only the first to utilize environmentally-friendly clinical biomolecules to build up a thin film of protamine-heparin complex on Kapton, but also the first to be conducted under minimally destructive and maximally mild conditions...
December 23, 2016: Scientific Reports
Lynda C Ikejimba, Christian G Graff, Shani Rosenthal, Andreu Badal, Bahaa Ghammraoui, Joseph Y Lo, Stephen J Glick
PURPOSE: Physical phantoms are central to the evaluation of 2D and 3D breast imaging systems. Currently available physical phantoms have limitations including unrealistic uniform background structure, large expense, or excessive fabrication time. The purpose of this work is to outline a method for rapidly creating realistic, inexpensive physical anthropomorphic phantoms for use in full field digital mammography (FFDM) and digital breast tomosynthesis (DBT). METHODS: The phantom was first modeled using analytical expressions and then discretized into voxels of a specified size...
December 19, 2016: Medical Physics
Young Kwon Kim, Ju An Park, Woong Hee Yoon, Joonwon Kim, Sungjune Jung
We present drop-on-demand inkjet-based mammalian cell printing with a 30-μm nozzle diameter for cell-level accuracy. High-speed imaging techniques have been used to analyze the go-and-stop movement of cells inside the nozzle under a pulsed pressure generated by a piezo-actuator and the jet formation after ejection. Patterning of an array of 20 × 20 dots on a glass substrate reveals that each printed drop contains 1.30 cells on average at the cell concentration of 5.0 × 10(6) cells ml(-1) for the very small nozzle, whereas larger nozzles with the diameter of 50 and 80 μm deliver 2...
November 2016: Biomicrofluidics
Laura Elomaa, Yunzhi Peter Yang
There is a great need for engineered vascular grafts among patients with cardiovascular diseases who are in need of bypass therapy and lack autologous healthy blood vessels. In addition, because of the severe worldwide shortage of organ donors, there is an increasing need for engineered vascularized tissue constructs as an alternative to organ transplants. Additive manufacturing (AM) offers great advantages and flexibility of fabrication of cell-laden, multimaterial, and anatomically shaped vascular grafts and vascularized tissue constructs...
January 10, 2017: Tissue Engineering. Part B, Reviews
Yueyuan Zhang, Julie Northcutt, Tim Hanks, Ian Miller, Bill Pennington, Raz Jelinek, Inyee Han, Paul Dawson
Polydiacetylene (PDA) vesicles are of interest as biosensors, particularly for pathogenic bacteria. As part of a food monitoring system, interaction with food sanitizers/surfactants was investigated. PDA vesicles were prepared by inkjet-printing, photopolymerized and characterized by dynamic light scattering (DLS) and UV/Vis spectroscopy. The optical response of PDA vesicles at various concentrations verses a fixed sanitizer/surfactant concentration was determined using a two variable factorial design. Sanitizer/surfactant response at various concentrations over time was also measured...
April 15, 2017: Food Chemistry
Tomáš Homola, Petr Dzik, Michal Veselý, Jakub Kelar, Mirko Černák, Martin Weiter
Hybrid mesoporous titania/silica electron-generating and transporting layers were prepared using wet-coating with a dispersion consisting of prefabricated titania nanoparticles and a methyl-silica binder. Titania/methyl-silica wet layers were deposited by inkjet printing and further mineralized by low-temperature atmospheric-pressure air plasma using diffuse coplanar surface barrier discharge (DCSBD) to form a titania/silica hybrid nanocomposite coating. Morphological analysis performed by scanning electron microscopy revealed no damage to the titania nanoparticles and chemical analysis performed by X-ray photoelectron spectroscopy disclosed a rapid decrease in carbon and increase in oxygen, indicating the oxidation effect of the plasma...
December 14, 2016: ACS Applied Materials & Interfaces
Zhenkun Gu, Kang Wang, Huizeng Li, Meng Gao, Lihong Li, Minxuan Kuang, Yong Sheng Zhao, Mingzhu Li, Yanlin Song
Perovskite single-crystalline microplate arrays are directly achieved in large scale by inkjet printing, which present high performance lasing property with quality factors up to 863 and RGB (red-green-blue) emission. This facile, nonlithographic method makes its promising applications on multi-integrated coherent light sources and other high-performance integrated optoelectronic applications.
December 12, 2016: Small
Haihua Zhou, Rui Chang, Elsa Reichmanis, Yanlin Song
The resolution of inkjet printing technology is determined by wetting and evaporation processes after the jet drop contacts the substrate. Here, the wetting of different picoliter solubilized polymer droplets jetting onto one-end-closed porous alumina was investigated. The selected polymers are commonly used in inkjet ink. The synergistic effects of the hierarchical structure and substrate surface modification were used to control the behavior of polymer-based ink drops. A model that invokes the effect of surface tension was applied to calculate the amount of polymer solution penetrating into the pores...
December 21, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
Hao Jiang, Sheida Alan, Haleh Shahbazbegian, Jasbir N Patel, Bozena Kaminska
Inkjet printing of silver ink has been widely used to print conductive patterns in flexible electronic devices, and the printed patterns are commonly known to be colorless. We demonstrate that by printing a single type of ordinary silver nanoparticle ink on top of a substrate patterned with polymer nanostructures, the printed silver is molded by the nanostructures and gains robust structural colors. The colors are tunable by varying the geometries of nanostructures, and a broad range of visual colors can be achieved by mixing the red, green, and blue colors displayed from silver dots printed on different nanostructures...
November 22, 2016: ACS Nano
Shinji Sakai, Yusuke Yamamoto, Gantumur Enkhtuul, Kohei Ueda, Kenichi Arai, Masahito Taya, Makoto Nakamura
The authors report a method to prepare cell-laden, cell-sized microparticles from various materials suitable for individual applications. The method includes a piezoelectric inkjetting technology and a horseradish peroxidase (HRP)-catalyzed crosslinking reaction. The piezoelectric inkjetting technology enables production of cell-laden, cell-sized (20-60 μm) droplets from a polymer aqueous solution. The HRP-catalyzed crosslinking of the polymer in the ejected solution enables production of spherical microparticles from various materials...
December 8, 2016: Macromolecular Bioscience
Abdul Quddious, Shuai Yang, Munawar M Khan, Farooq A Tahir, Atif Shamim, Khaled N Salama, Hammad M Cheema
An inkjet-printed, fully passive sensor capable of either humidity or gas sensing is presented herein. The sensor is composed of an interdigitated electrode, a customized printable gas sensitive ink and a specialized dipole antenna for wireless sensing. The interdigitated electrode printed on a paper substrate provides the base conductivity that varies during the sensing process. Aided by the porous nature of the substrate, a change in relative humidity from 18% to 88% decreases the electrode resistance from a few Mega-ohms to the kilo-ohm range...
December 6, 2016: Sensors
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