keyword
MENU ▼
Read by QxMD icon Read
search

flexible electronics

keyword
https://www.readbyqxmd.com/read/28544754/heterogeneous-integration-of-carbon-nanotube-graphene-for-high-performance-flexible-and-transparent-photodetectors
#1
Soonjae Pyo, Wondo Kim, Han-Il Jung, Jungwook Choi, Jongbaeg Kim
Low-dimensional carbon materials, such as semiconducting carbon nanotubes (CNTs), conducting graphene, and their hybrids, are of great interest as promising candidates for flexible, foldable, and transparent electronics. However, the development of highly photoresponsive, flexible, and transparent optoelectronics still remains limited due to their low absorbance and fast recombination rate of photoexcited charges, despite the considerable potential of photodetectors for future wearable and foldable devices...
May 24, 2017: Small
https://www.readbyqxmd.com/read/28544097/multiple-hydrogen-bonding-enables-the-self-healing-of-sensors-for-human-machine-interaction
#2
Jie Cao, Canhui Lu, Jian Zhuang, Manxiao Liu, Xinxing Zhang, Yanmei Yu, Qingchuan Tao
Despite its widespread use in signal collection, flexible sensor has been rarely used in human-machine interaction due to its indistinguishable signal, poor reliability and stability when suffered from unavoidable scratches and/or mechanical cuts. Here, we demonstrate a highly sensitive and self-healing sensor enabled by multiple hydrogen bonding network and nanostructured conductive network. The nanostructured supramolecular sensor displays extremely fast (~15 s) and repeatable self-healing ability with high healing efficiency (93% after the 3rd healing process)...
May 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28543811/the-structural-flexibility-of-the-human-copper-chaperone-atox1-insights-from-combined-pulsed-epr-studies-and-computations
#3
Ariel R Levy, Meital Turgeman, Lada Gevorkyan-Aiapetov, Sharon Ruthstein
Metallochaperones are responsible for shuttling metal ions to target proteins. Thus, a metallochaperone's structure must be sufficiently flexible both to hold onto its ion while traversing the cytoplasm and to transfer the ion to or from a partner protein. Here, we sought to shed light on the structure of Atox1, a metallochaperone involved in the human copper regulation system. Atox1 shuttles copper ions from the main copper transporter, Ctr1, to the ATP7b transporter in the Golgi apparatus. Conventional biophysical tools such as X-ray or NMR cannot always target the various conformational states of metallochaperones, owing to a requirement for crystallography or low sensitivity and resolution...
May 20, 2017: Protein Science: a Publication of the Protein Society
https://www.readbyqxmd.com/read/28542243/covalent-dye-attachment-influences-the-dynamics-and-conformational-properties-of-flexible-peptides
#4
Manuel P Luitz, Anders Barth, Alvaro H Crevenna, Rainer Bomblies, Don C Lamb, Martin Zacharias
Fluorescence spectroscopy techniques like Förster resonance energy transfer (FRET) and fluorescence correlation spectroscopy (FCS) have become important tools for the in vitro and in vivo investigation of conformational dynamics in biomolecules. These methods rely on the distance-dependent quenching of the fluorescence signal of a donor fluorophore either by a fluorescent acceptor fluorophore (FRET) or a non-fluorescent quencher, as used in FCS with photoinduced electron transfer (PET). The attachment of fluorophores to the molecule of interest can potentially alter the molecular properties and may affect the relevant conformational states and dynamics especially of flexible biomolecules like intrinsically disordered proteins (IDP)...
2017: PloS One
https://www.readbyqxmd.com/read/28541654/stable-1t-mose2-and-carbon-nanotubes-hybridized-flexible-film-binder-free-and-high-performance-li-ion-anode
#5
Ting Xiang, Shi Tao, Weiyu Xu, Qi Fang, Chuanqiang Wu, Daobin Liu, Yu Zhou, Adnan Khalil, Zahir Muhammad, Wangsheng Chu, Zhonghui Wang, Hongfa Xiang, Qin Liu, Li Song
Two-dimensional stable metallic 1T-MoSe2 with expanded interlayer spacing of 10.0 Å in-situ grown on SWCNTs film is fabricated via a one-step solvothermal method. Combined with X-ray absorption near-edge structures, our characterizations reveals that such 1T-MoSe2 and single-walled carbon nanotubes (abbreviated as 1T-MoSe2/SWCNTs) hybridized structure can provide strong electrical and chemical coupling between 1T-MoSe2 nanosheets and SWCNTs film in a form of C-O-Mo bonding, which is significantly benefiting a high-efficiency electron/ion transport pathway and structural stability, thus directly enabling high performance lithium-storage properties...
May 25, 2017: ACS Nano
https://www.readbyqxmd.com/read/28537405/in-situ-grown-fe2o3-single-crystallites-on-reduced-graphene-oxide-nanosheets-as-high-performance-conversion-anode-for-sodium-ion-batteries
#6
Ting Li, Aiqiong Qin, Lanlan Yang, Jie Chen, Qiufan Wang, Daohong Zhang, Hanxi Yang
Electrochemical conversion reactions of metal oxides provide a new avenue to build high capacity anodes for sodium-ion batteries. However, the poor rate performance and cyclability of these conversion anodes remain a significant challenge for Na-ion battery applications because the most of conversion anodes suffer from sluggish kinetics and irreversible structural change during cycles. In this paper, we report a Fe2O3 single crystallites/reduced graphene oxide composite (Fe2O3/rGO), where the Fe2O3 single crystallites with a particle size of ~300 nm were uniformly anchored on the rGO nanosheets, which provide a highly conductive framework to facilitate electron transport and a flexible matrix to buffer the volume change of the material during cycling...
May 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28537392/dispersion-corrected-spin-component-scaled-double-hybrid-density-functional-theory-implementation-and-performance-for-non-covalent-interactions
#7
Loïc M Roch, Kim K Baldridge
The implementation of 300 combinations of generalized gradient approximation/local density approximation exchange-correlation dispersion-corrected spin-component-scaled double-hybrid (DSD) density functional theory (DFT) methods has been carried out and the performance assessed against several DFT and post-Hartree-Fock methods, enabling further advancements toward the long-standing challenge of accurate prediction of interaction energies and associated properties. The resulting framework is flexible and has been further extended to include the resolution of identity (RI) approximation for solving the critical four-center two-electron repulsion integrals in the basis of the Kohn-Sham orbitals for cost effectiveness...
May 24, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28537314/supramolecular-gel-from-self-assembly-of-a-c3-symmetrical-discotic-molecular-bearing-pillar-5-arene
#8
Xiao-Jun Kuang, Ali Wajahat, Wei-Tao Gong, Manivannan Kalavathi Dhinakaran, Xiao-Han Li, Gui-Ling Ning
A novel C3-symmetric benzene-1,3,5-tricarboxamide (BTAs) decorated with three identical pillar[5]arene tails was designed, synthesized and characterized. The compound can gelate acetonitrile at low concentration (0.2 wt%) upon sonication at room temperature, but a precipitate was obtained by a conventional heating-cooling process. Scanning electron microscopy revealed that the gel and precipitate were constructed by entangled, high-aspect-ratio flexible bundles of nanofibrils. UV-vis spectroscopy, circular dichroism, Fourier transform infrared microscopy and powder X-ray diffraction showed that the compound formed chiral, elongated, columnar aggregates with nanofiber morphology by a combination of intermolecular hydrogen bonding between the N-H and C[double bond, length as m-dash]O of amides, π-π stacking (H-aggregates) and hydrophobic interactions of peripheral groups...
May 24, 2017: Soft Matter
https://www.readbyqxmd.com/read/28536475/a-simple-silver-nanowire-patterning-method-based-on-poly-ethylene-glycol-photolithography-and-its-application-for-soft-electronics
#9
Youngsang Ko, Jeonghun Kim, Dabum Kim, Yusuke Yamauchi, Jung Ho Kim, Jungmok You
Hydrogel-based flexible microelectrodes have garnered considerable attention recently for soft bioelectronic applications. We constructed silver nanowire (AgNW) micropatterns on various substrates, via a simple, cost-effective, and eco-friendly method without aggressive etching or lift-off processes. Polyethylene glycol (PEG) photolithography was employed to construct AgNW patterns with various shapes and sizes on the glass substrate. Based on a second hydrogel gelation process, AgNW patterns on glass substrate were directly transferred to the synthetic/natural hydrogel substrates...
May 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28536302/a-cryo-em-based-model-of-phosphorylation-and-fkbp12-6-mediated-allosterism-of-the-cardiac-ryanodine-receptor
#10
Sonali Dhindwal, Joshua Lobo, Vanessa Cabra, Demetrio J Santiago, Ashok R Nayak, Kelly Dryden, Montserrat Samsó
Type 2 ryanodine receptors (RyR2s) are calcium channels that play a vital role in triggering cardiac muscle contraction by releasing calcium from the sarcoplasmic reticulum into the cytoplasm. Several cardiomyopathies are associated with the abnormal functioning of RyR2. We determined the three-dimensional structure of rabbit RyR2 in complex with the regulatory protein FKBP12.6 in the closed state at 11.8 Å resolution using cryo-electron microscopy and built an atomic model of RyR2. The heterogeneity in the data set revealed two RyR2 conformations that we proposed to be related to the extent of phosphorylation of the P2 domain...
May 23, 2017: Science Signaling
https://www.readbyqxmd.com/read/28535341/fully-stretchable-optoelectronic-sensors-based-on-colloidal-quantum-dots-for-sensing-photoplethysmographic-signals
#11
Tae-Ho Kim, Chang-Seok Lee, Sangwon Kim, Jaehyun Hur, Sangmin Lee, Keun Wook Shin, Young-Zoon Yoon, Moon Kee Choi, Jiwoong Yang, Dae-Hyeong Kim, Taeghwan Hyeon, Seongjun Park, Sungwoo Hwang
Flexible and stretchable optoelectronic devices can be potentially applied in displays, biosensors, biomedicine, robotics, and energy generation. The use of nanomaterials with superior optical properties such as quantum dots (QDs) is important in the realization of wearable displays and biomedical devices, but specific structural design as well as selection of materials should preferentially accompany this technology to realize stretchable forms of these devices. Here, we report stretchable optoelectronic sensors manufactured using colloidal QDs and integrated with elastomeric substrates, whose optoelectronic properties are stable under various deformations...
May 23, 2017: ACS Nano
https://www.readbyqxmd.com/read/28535338/a-flexible-lithium-ion-fiber-battery-by-regularly-stacking-two-dimensional-titanium-oxide-nanosheets-hybridized-with-reduced-graphene-oxide
#12
Tatsumasa Hoshide, Yuanchuan Zheng, Junyu Hou, Zhiqiang Wang, Qingwen Li, Zhigang Zhao, Renzhi Ma, Takayoshi Sasaki, Fengxia Geng
Increasing interest has recently been devoted to developing small, rapid, and portable electronic devices; thus, it is becoming critically important to provide matching light and flexible energy-storage systems to power them. To this end, compared with the inevitable drawbacks of being bulky, heavy, and rigid for traditional planar sandwiched structures, linear fiber-shaped lithium-ion batteries (LIB) have become increasingly important owing to their combined superiorities of miniaturization, adaptability, and weavability, the progress of which is heavily dependent on developing new fiber-shaped electrodes...
May 23, 2017: Nano Letters
https://www.readbyqxmd.com/read/28534919/solid-state-and-surface-effects-in-thin-film-molecular-switches
#13
Jonathan P Hopwood, Jacob W Ciszek
Thin-films of three dihydroindolizine molecular switches were monitored via polarization modulation infrared reflection absorption spectroscopy to quantify solid state and surface-based inhibition of switching as a function of irradiation time. In the solid state, the molecular switches diverged dramatically with flexible alkyl substituents resulting in switching rates up to three times that of switches containing rigid analogs. For thin-films, decreasing film thickness from 30 nm to approximately 4 molecules thick resulted in an increase in inhibition...
May 23, 2017: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/28534410/a-facile-methodology-for-the-development-of-printable-and-flexible-all-solid-state-rechargeable-battery
#14
Bibekananda De, Amit Yadav, Salman Khan, Kamal K Kar
Development of the printable and flexible energy storage device is one of the most promising technologies for wearable electronics in textile industry. The present work design a printable and flexible all solid state rechargeable battery for wearable electronic in textile application. Copper coated carbon fiber is used to make polyethylene oxide (PEO) based polymer nanocomposite for flexible and conductive current collector layer. Lithium iron phosphate (LiFePO4) and titanium dioxide (TiO2) are utilized to prepare cathode and anode layer, respectively with PEO and carbon black composites...
May 23, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28533392/syringe-injectable-mesh-electronics-integrate-seamlessly-with-minimal-chronic-immune-response-in-the-brain
#15
Tao Zhou, Guosong Hong, Tian-Ming Fu, Xiao Yang, Thomas G Schuhmann, Robert D Viveros, Charles M Lieber
Implantation of electrical probes into the brain has been central to both neuroscience research and biomedical applications, although conventional probes induce gliosis in surrounding tissue. We recently reported ultraflexible open mesh electronics implanted into rodent brains by syringe injection that exhibit promising chronic tissue response and recording stability. Here we report time-dependent histology studies of the mesh electronics/brain-tissue interface obtained from sections perpendicular and parallel to probe long axis, as well as studies of conventional flexible thin-film probes...
May 22, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28532216/structural-insights-into-the-eukaryotic-transcription-initiation-machinery
#16
Eva Nogales, Robert K Louder, Yuan He
Eukaryotic gene transcription requires the assembly at the promoter of a large preinitiation complex (PIC) that includes RNA polymerase II (Pol II) and the general transcription factors TFIID, TFIIA, TFIIB, TFIIF, TFIIE, and TFIIH. The size and complexity of Pol II, TFIID, and TFIIH have precluded their reconstitution from heterologous systems, and purification relies on scarce endogenous sources. Together with their conformational flexibility and the transient nature of their interactions, these limitations had precluded structural characterization of the PIC...
May 22, 2017: Annual Review of Biophysics
https://www.readbyqxmd.com/read/28531355/flexible-multiferroic-bulk-heterojunction-with-giant-magnetoelectric-coupling-via-the-van-der-waals-epitaxy
#17
Ying-Hao Chu, Tahta Amrillah, Yugandhar Bitla, Kwangwoo Shin, Tiannan Yang, Ying-Hui Hsieh, Yu-You Chiou, Heng-Jui Liu, Thi Hien Do, Dong Su, Yi-Chun Chen, Shien-Uang Jen, Long-Qing Chen, Kee Hoon Kim, Jenh-Yih Juang
Magnetoelectric nanocomposites have been a topic of intense research due to their profound potential in the applications of electronic devices based on the spintronic technology. Nevertheless, in spite of significant progress made in the growth of high-quality nanocomposite thin films, the substrate clamping effect still remains as a major hurdle in realizing the ultimate magnetoelectric coupling. To overcome this obstacle, an alternative strategy of fabricating self-assembled ferroelectric-ferrimagnetic bulk heterojunction on flexible muscovite via the van der Waals epitaxy is adopted...
May 22, 2017: ACS Nano
https://www.readbyqxmd.com/read/28530803/red-phosphorus-nano-dots-on-reduced-graphene-oxide-as-a-flexible-and-ultra-fast-anode-for-sodium-ion-batteries
#18
Yihang Liu, Anyi Zhang, Chenfei Shen, Qingzhou Liu, Xuan Cao, Yuqiang Ma, Liang Chen, Christian Lau, Tian-Chi Chen, Fei Wei, Chongwu Zhou
Sodium-ion batteries offer an attractive option for potential low cost and large scale energy storage due to the earth abundance of sodium. Red phosphorus is considered as a high capacity anode for sodium-ion batteries with a theoretical capacity of 2596 mAh/g. However, similar to silicon in lithium-ion batteries, several limitations such as large volume expansion upon sodiation/de-sodiation and low electronic conductance have severely limited the performance of red phosphorus anodes. In order to address the above challenges, we have developed a method to deposit red phosphorus nano-dots densely and uniformly onto reduced graphene oxide sheets (P@RGO) to minimize the sodium ion diffusion length and the sodiation/de-sodiation stresses, and the RGO network also serves as electron pathway and creates free space to accommodate the volume variation of phosphorus particles...
May 22, 2017: ACS Nano
https://www.readbyqxmd.com/read/28530653/structure-of-a-pre-catalytic-spliceosome
#19
Clemens Plaschka, Pei-Chun Lin, Kiyoshi Nagai
Intron removal requires assembly of the spliceosome on pre-mRNA and extensive remodelling to form the spliceosome's catalytic centre. Here we report the cryo-electron microscopy structure of the yeast pre-catalytic B complex spliceosome at near-atomic resolution. The mobile U2 snRNP associates with U4/U6.U5 tri-snRNP through U2/U6 helix II and an interface between U4/U6 di-snRNP and the U2 snRNP SF3b-containing domain, which also transiently contacts the helicase Brr2. The U2 snRNP 3' region is flexibly attached to the SF3b-containing domain and protrudes over the concave surface of tri-snRNP, where the U1 snRNP may reside before its release from the pre-mRNA 5'-splice site...
May 22, 2017: Nature
https://www.readbyqxmd.com/read/28530404/role-of-crystallization-in-the-morphology-of-polymer-non-fullerene-acceptor-bulk-heterojunctions
#20
Kathryn A O'Hara, David P Ostrowski, Unsal Koldemir, Christopher J Takacs, Sean E Shaheen, Alan Sellinger, Michael L Chabinyc
Many high efficiency organic photovoltaics use fullerene-based acceptors despite their high production cost, weak optical absorption in the visible range, and limited synthetic variability of electronic and optical properties. To circumvent this deficiency, non-fullerene small-molecule acceptors have been developed that have good synthetic flexibility, allowing for precise tuning of optoelectronic properties, leading to enhanced absorption of the solar spectrum and increased open-circuit voltages (VOC). We examined the detailed morphology of bulk heterojunctions of poly(3-hexylthiophene) and the small-molecule acceptor HPI-BT to reveal structural changes that lead to improvements in the fill factor of solar cells upon thermal annealing...
May 22, 2017: ACS Applied Materials & Interfaces
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"