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https://www.readbyqxmd.com/read/28299709/inkjet-printed-paper-fluidic-devices-for-onsite-detection-of-antibiotics-using-surface-enhanced-raman-spectroscopy
#1
Stephen M Restaino, Adam Berger, Ian M White
Surface enhanced Raman spectroscopy (SERS) provides rapid and sensitive identification of small molecule analytes. Traditionally, fabrication of SERS devices is an expensive process that involves the use of micro- and nano-fabrication procedures. Further, acquisition of diverse sample types requires complex preparation procedures that limits SERS to lab-based applications. Recent innovations using plasmonic nanoparticles embedded in flexible paper substrates has allowed the expansion of SERS techniques to portable analytical procedures...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28290194/inkjet-printed-photodetector-arrays-based-on-hybrid-perovskite-ch3nh3pbi3-microwires
#2
Yang Liu, Fushan Li, Chandrasekar Perumal Veeramalai, Wei Chen, Tailiang Guo, Chaoxing Wu, Tae Whan Kim
Hybrid perovskite CH3NH3PbI3 has attracted extensive research interests in optoelectronic devices in recent years. Herein, inkjet printing method has been employed to deposit a perovskite CH3NH3PbI3 layer. By choosing the proper solvent and controlling the crystal growth rate, hybrid perovskite CH3NH3PbI3 nanowires, microwires, network and islands were synthesized by means of inkjet printing. Electrode-gap-electrode lateral-structured photodetectors were fabricated with these different crystals, of which hybrid perovskite microwires-based photodetector would balance the uniformity and low defects to obtain switching ratio of 16000%, responsivity of 1...
March 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28282850/fully-printed-flexible-single-chip-rfid-tag-with-light-detection-capabilities
#3
Aniello Falco, Jose F Salmerón, Florin C Loghin, Paolo Lugli, Almudena Rivadeneyra
A printed passive radiofrequency identification (RFID) tag in the ultra-high frequency band for light and temperature monitoring is presented. The whole tag has been manufactured by printing techniques on a flexible substrate. Antenna and interconnects are realized with silver nanoparticles via inkjet printing. A sprayed photodetector performs the light monitoring, whereas temperature measurement comes from an in-built sensor in the silicon RFID chip. One of the advantages of this system is the digital read-out and transmission of the sensors information on the RFID tag that ensures reliability...
March 8, 2017: Sensors
https://www.readbyqxmd.com/read/28271501/preparation-of-artificial-blood-from-the-extract-of-legume-root-nodules-and-the-creation-of-artificial-latent-fingermarks-in-blood-using-artificial-blood
#4
Sungwook Hong, Chaewon Kim, Soyoung Jeon, Eunhye Lee
Distribution of homogeneous fingermarks in blood is essential for conducting proficiency tests in forensic science. Hence, the artificial blood was prepared using the root nodule extract of Glycine max plants. The reactivity of the artificial blood with widely used human blood detection reagents was tested. Artificial latent fingermarks in blood were printed using an inkjet cartridge case filled with artificial blood solution. The artificial latent fingermarks in blood were developed with amino acid-sensitive reagents and could obtain development as prominent as the image of the master fingermark saved on the computer...
March 7, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28268978/conformai-electronics-for-longitudinal-bio-sensing-in-at-home-assistive-and-rehabilitative-devices
#5
John C Batchelor, Stephen G Yeates, Alexander J Casson
Wearable electronics are revolutionizing personalized and preventative healthcare by allowing the easy, unobtrusive, and long term monitoring of a range of body parameters. Conformal electronics which attach directly to the skin in a very robust and long term manner are envisioned as the next generation of highly portable miniaturized computing devices, beyond wearables. In this paper we overview the state-of-the-art in conformal electronics created using silver nanoparticle inkjet printed techniques for home assistive and rehabilitative devices...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28251424/visualization-and-non-destructive-quantification-of-inkjet-printed-pharmaceuticals-on-different-substrates-using-raman-spectroscopy-and-raman-chemical-imaging
#6
Magnus Edinger, Daniel Bar-Shalom, Jukka Rantanen, Natalja Genina
PURPOSE: The purpose of this study was to investigate the applicability of Raman spectroscopy for visualization and quantification of inkjet-printed pharmaceuticals. METHODS: Haloperidol was used as a model active pharmaceutical ingredient (API), and a printable ink base containing lactic acid and ethanol was developed. Inkjet printing technology was used to apply haloperidol ink onto three different substrates. Custom-made inorganic compacts and dry foam, as well as marketed paracetamol tablets were used as the substrates...
March 1, 2017: Pharmaceutical Research
https://www.readbyqxmd.com/read/28249512/design-of-a-novel-5-dof-flexure-based-compound-alignment-stage-for-roll-to-roll-printed-electronics
#7
Weihai Chen, Shang Yang, Jingmeng Liu, Wenjie Chen, Yan Jin
Alignment stage is a pivotal component for Roll-to-Roll Printed Electronic (R2RPE), especially for Roll-to-Roll inkjet printing. This paper presents the design, modeling, and testing of a new flexure-based compound alignment stage for R2RPE. In this design, the alignment stage has 5-DOF (Degree of Freedom) motions for compensating the alignment errors and only the rotation motion about the y-axis is redundant. The stage is constructed in series by four key parts and adopts a compounded flexure structure to achieve a great performance...
February 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28249472/rapid-jetting-status-inspection-and-accurate-droplet-volume-measurement-for-a-piezo-drop-on-demand-inkjet-print-head-using-a-scanning-mirror-for-display-applications
#8
Dong-Youn Shin, Minsung Kim
Despite the inherent fabrication simplicity of piezo drop-on-demand inkjet printing, the non-uniform deposition of colourants or electroluminescent organic materials leads to faulty display products, and hence, the importance of rapid jetting status inspection and accurate droplet volume measurement increases from a process perspective. In this work, various jetting status inspections and droplet volume measurement methods are reviewed by discussing their advantages and disadvantages, and then, the opportunities for the developed prototype with a scanning mirror are explored...
February 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28248646/filling-schemes-of-silver-dots-inkjet-printed-on-pixelated-nanostructured-surfaces
#9
Sheida Alan, Hao Jiang, Haleh Shahbazbegian, Jasbir N Patel, Bozena Kaminska
Recently, our group demonstrated an inkjet-based technique to enable high-throughput, versatile and full-colour printing of structural colours on generic pixelated nanostructures, termed as molded ink on nanostructured surfaces. The printed colours are controlled by the area of printed silver on the pixelated red, green and blue polymer nanostructure arrays. This paper investigates the behaviour of jetted silver ink droplets on nanostructured surfaces and the microscale dot patterns implemented during printing process, for achieving accurate and consistent colours in the printed images...
March 1, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28239692/high-throughput-screening-of-microchip-synthesized-genes-in-programmable-double-emulsion-droplets
#10
H F Chan, S Ma, J Tian, K W Leong
The rapid advances in synthetic biology and biotechnology are increasingly demanding high-throughput screening technology, such as screening of the functionalities of synthetic genes for optimization of protein expression. Compartmentalization of single cells in water-in-oil (W/O) emulsion droplets allows screening of a vast number of individualized assays, and recent advances in automated microfluidic devices further help realize the potential of droplet technology for high-throughput screening. However these single-emulsion droplets are incompatible with aqueous phase analysis and the inner droplet environment cannot easily communicate with the external phase...
February 27, 2017: Nanoscale
https://www.readbyqxmd.com/read/28230340/all-inkjet-printed-metal-oxide-thin-film-transistor-array-with-good-stability-and-uniformity-using-surface-energy-patterns
#11
Yuzhi Li, Linfeng Lan, Sheng Sun, Zhenguo Lin, Peixiong Gao, Wei Song, Erlong Song, Peng Zhang, Junbiao Peng
An array of inkjet-printed metal-oxide thin-film transistors (TFTs) is demonstrated for the first time with the assistance of surface-energy patterns prepared by printing pure solvent to etch the ultrathin hydrophobic layer. The surface-energy patterns not only restrained the spreading of inks but also provided a facile way to regulate the morphology of metal oxide films without optimizing ink formulation. The fully printed InGaO TFT devices in the array exhibited excellent electron transport characteristics with a maximum mobility of 11...
February 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28227188/conformai-electronics-for-longitudinal-bio-sensing-in-at-home-assistive-and-rehabilitative-devices
#12
John C Batchelor, Stephen G Yeates, Alexander J Casson, John C Batchelor, Stephen G Yeates, Alexander J Casson, Stephen G Yeates, John C Batchelor, Alexander J Casson
Wearable electronics are revolutionizing personalized and preventative healthcare by allowing the easy, unobtrusive, and long term monitoring of a range of body parameters. Conformal electronics which attach directly to the skin in a very robust and long term manner are envisioned as the next generation of highly portable miniaturized computing devices, beyond wearables. In this paper we overview the state-of-the-art in conformal electronics created using silver nanoparticle inkjet printed techniques for home assistive and rehabilitative devices...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28218518/one-step-interface-engineering-for-all-inkjet-printed-all-organic-components-in-transparent-flexible-transistors-and-inverters-polymer-binding
#13
Jewook Ha, Seungjun Chung, Mingyuan Pei, Kilwon Cho, Hoichang Yang, Yongtaek Hong
We report a one-step interface engineering methodology which can be used on both polymer electrodes and gate dielectric for all-inkjet-printed, flexible, transparent organic thin-film transistors (OTFTs) and inverters. Dimethylchlorosilane-terminated polystyrene (PS) was introduced as a surface modifier to cured poly(4-vinylphenol) dielectric and poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) electrodes without any pretreatment. On the untreated and PS interlayer-treated dielectric and electrode surfaces, 6,13-bis(triisopropylsilylethynyl)pentacene was printed to fabricate OTFTs and inverters...
March 1, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28218507/enabling-inkjet-printed-graphene-for-ion-selective-electrodes-with-post-print-thermal-annealing
#14
Qing He, Suprem R Das, Nathaniel T Garland, Dapeng Jing, John A Hondred, Allison A Cargill, Shaowei Ding, Chandran Karunakaran, Jonathan C Claussen
Inkjet printed graphene (IPG) has recently shown tremendous promise in reducing the cost and complexity of graphene circuit fabrication. Herein we demonstrate, for the first time, the fabrication of an ion selective electrode (ISE) with IPG. A thermal annealing process in a nitrogen ambient environment converts the IPG into a highly conductive electrode (sheet resistance changes from 52.8 ± 7.4 MΩ/☐ for unannealed graphene to 172.7 ± 33.3Ω/☐ for graphene annealed at 950°C). Raman spectroscopy and field emission scanning electron microscopy (FESEM) analysis reveals that the printed graphene flakes begin to smooth at an annealing temperature of 500°C and then become more porous and more electrically conductive when annealed at temperatures of 650°C and above...
February 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28218474/electrical-differentiation-of-mesenchymal-stem-cells-into-schwann-cell-like-phenotypes-using-inkjet-printed-graphene-circuits
#15
Suprem R Das, Metin Uz, Shaowei Ding, Matthew T Lentner, John A Hondred, Allison A Cargill, Donald S Sakaguchi, Surya Mallapragada, Jonathan C Claussen
Graphene-based materials (GBMs) have displayed tremendous promise for use as neurointerfacial substrates as they enable favorable adhesion, growth, proliferation, spreading, and migration of immobilized cells. This study reports the first case of the differentiation of mesenchymal stem cells (MSCs) into Schwann cell (SC)-like phenotypes through the application of electrical stimuli from a graphene-based electrode. Electrical differentiation of MSCs into SC-like phenotypes is carried out on a flexible, inkjet-printed graphene interdigitated electrode (IDE) circuit that is made highly conductive (sheet resistance < 1 kΩ/sq) via a postprint pulse-laser annealing process...
February 20, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28211995/far-uv-annealed-inkjet-printed-in2o3-semiconductor-layers-for-thin-film-transistors-on-a-flexible-polyethylene-naphthalate-substrate
#16
Jaakko Leppäniemi, Kim Eiroma, Himadri Majumdar, Ari Alastalo
The inkjet-printing process of precursor solutions containing In nitrate dissolved in 2-methoxyethanol is optimized using ethylene glycol as a cosolvent that allows the stabilization of the droplet formation, leading to a robust, repeatable printing process. The inkjet-printed precursor films are then converted to In2O3 semiconductors at flexible-substrate-compatible low temperatures (150-200 °C) using combined far-ultraviolet (FUV) exposure at ∼160 nm and thermal treatment. The compositional nature of the precursor-to-metal oxide conversion is studied using grazing incidence X-ray diffraction (GIXRD), X-ray reflectivity (XRR), and Fourier transform infrared (FTIR) spectroscopy that indicate that amorphous, high density (up to 5...
March 1, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28196320/flexible-and-highly-biocompatible-nanofiber-based-electrodes-for-neural-surface-interfacing
#17
Dong Nyoung Heo, Han-Jun Kim, Yijae Lee, Min Heo, Sang Jin Lee, Donghyun Lee, Sun Hee Do, Soo Hyun Lee, Il Keun Kwon
Polyimide (PI)-based electrodes have been widely used as flexible biosensors in implantable device applications for recording biological signals. However, the long-term quality of neural signals obtained from PI-based nerve electrodes tends to decrease due to nerve damage by neural tissue compression, mechanical mismatch and insufficient fluid exchange between the neural tissue and electrodes. Here, we resolve these problems with a developed PI nanofiber (NF)-based nerve electrode for stable neural signal recording, which can be fabricated via electrospinning and inkjet printing...
February 14, 2017: ACS Nano
https://www.readbyqxmd.com/read/28195705/top-contact-self-aligned-printing-for-high-performance-carbon-nanotube-thin-film-transistors-with-sub-micron-channel-length
#18
Xuan Cao, Fanqi Wu, Christian Lau, Yihang Liu, Qingzhou Liu, Chongwu Zhou
Semiconducting single-wall carbon nanotubes are ideal semiconductors for printed thin-film transistors due to their excellent electrical performance and intrinsic printability with solution-based deposition. However, limited by resolution and registration accuracy of current printing techniques, previously reported fully printed nanotube transistors had rather long channel lengths (>20 μm) and consequently low current-drive capabilities (<0.2 μA/μm). Here we report fully inkjet printed nanotube transistors with dramatically enhanced on-state current density of ∼4...
February 28, 2017: ACS Nano
https://www.readbyqxmd.com/read/28195485/birefringent-pattern-formation-in-photoinactive-liquid-crystalline-polymer-films-based-on-a-photoalignment-technique-with-top-coating-of-cinnamic-acid-derivatives-via-h-bonds
#19
Nobuhiro Kawatsuki, Ryosuke Fujii, Yu Fujioka, Satoshi Minami, Mizuho Kondo
The application of a top-coating of 4-methoxy cinnamic acid (MCA) onto a photoinactive liquid crystalline polymeric film containing benzoic acid (BA) side groups (P6BAM) is shown to enable thermally stimulated, photoinduced reorientation of the polymer structure. Annealing the MCA-coated P6BAM films leads to H-bond formation between BA and MCA, which also effectively smooths the film surface. Exposure to linearly polarized (LP) UV light initiates axis-selective photoreaction of the MCA groups; subsequent thermal treatment in the LC temperature range of P6BAM amplifies molecular reorientation of the BA side groups, while simultaneously eliminating the MCA molecules...
February 20, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28195483/development-of-oromucosal-dosage-forms-by-combining-electrospinning-and-inkjet-printing
#20
Mirja Palo, Karin Kogermann, Ivo Laidmäe, Andres Meos, Maren Preis, Jyrki Heinämäki, Niklas Sandler
Printing technology has been shown to enable flexible fabrication of solid dosage forms for personalized drug therapy. Several methods can be applied for tailoring the properties of the printed pharmaceuticals. In this study, the use of electrospun fibrous substrates in the fabrication of inkjet-printed dosage forms was investigated. A single-drug formulation with lidocaine hydrochloride (LH) and a combination drug system containing LH and piroxicam (PRX) for oromucosal administration were prepared. The LH was deposited on the electrospun and cross-linked gelatin substrates by inkjet printing, whereas PRX was incorporated within the substrate fibers during electrospinning...
February 14, 2017: Molecular Pharmaceutics
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