Abstract:
:In this paper, we present the first realization of an elastic metamaterial allowing independent tuning of negative density and stiffness for elastic waves propagating along a designated direction. In electromagnetic (or acoustic) metamaterials, it is now possible to tune permittivity (bulk modulus) and permeability (density) independently. Apparently, the tuning methods seem to be directly applicable for elastic case, but no realization has yet been made due to the unique tensorial physics of elasticity that makes wave motions coupled in a peculiar way. To realize independent tunability, we developed a single-phased elastic metamaterial supported by theoretical analysis and numerical/experimental validations.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Oh JH,Kwon YE,Lee HJ,Kim YYdoi
10.1038/srep23630subject
Has Abstractpub_date
2016-03-23 00:00:00pages
23630issn
2045-2322pii
srep23630journal_volume
6pub_type
杂志文章abstract::In this paper, we propose a feasible tool that uses a terahertz (THz) imaging system for identifying wheat grains at different stages of germination. The THz spectra of the main changed components of wheat grains, maltose and starch, which were obtained by THz time spectroscopy, were distinctly different. Used for ori...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep21299
更新日期:2016-02-19 00:00:00
abstract::Eurasian Jay (Garrulus glandarius) feathers display periodic variations in the reflected colour from white through light blue, dark blue and black. We find the structures responsible for the colour are continuous in their size and spatially controlled by the degree of spinodal phase separation in the corresponding reg...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep18317
更新日期:2015-12-21 00:00:00
abstract::A toolbox for the quantum simulation of polarons in ultracold atoms is presented. Motivated by the impressive experimental advances in the area of ultracold atomic mixtures, we theoretically study the problem of ultracold atomic impurities immersed in a Bose-Einstein condensate mixture (BEC). The coupling between impu...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-02398-5
更新日期:2017-05-24 00:00:00
abstract::Nuclear distribution element-like 1 (Ndel1) plays pivotal roles in diverse biological processes and is implicated in the pathogenesis of multiple neurodevelopmental disorders. Ndel1 function by regulating microtubules and intermediate filaments; however, its functional link with the actin cytoskeleton is largely unkno...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep31827
更新日期:2016-08-22 00:00:00
abstract::Gelatin-methacryloyl (GelMA) is one of the most commonly used photopolymerizable biomaterials in bio-applications. However, GelMA synthesis remains suboptimal, as its reaction parameters have not been fully investigated. The goal of this study is to establish an optimal route for effective and controllable GelMA synth...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep31036
更新日期:2016-08-09 00:00:00
abstract::Organic solar cells (OSCs) are promising alternatives to the conventional inorganic solar cells due to their low-cost processing and compatibility with flexible substrates. The development of low band-gap polymer, e.g., poly-[[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b']dithiophene-2,6-diyl] [3-fluoro-2-[(2-ethylhexy...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep13648
更新日期:2015-09-01 00:00:00
abstract::Globally, a small percentage of oil is recovered from reservoirs using primary and secondary recovery mechanisms, and thus a major focus of the oil industry is toward developing new technologies to increase recovery. Many new technologies utilize surfactants, macromolecules, and even nanoparticles, which are difficult...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-11816-7
更新日期:2017-09-14 00:00:00
abstract::Health-risk assessments of temperature are central to determine total non-accidental human mortality; however, few studies have investigated the effect of temperature on accidental human mortality. We performed a time-series study combined with a distributed lag non-linear model (DLNM) to quantify the non-linear and d...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-65344-y
更新日期:2020-05-21 00:00:00
abstract::There are approximately 1 million cryptococcal infections per year among HIV+ individuals, resulting in nearly 625,000 deaths. Cryptococcus neoformans and Cryptococcus gattii are the two most common species that cause human cryptococcosis. These two species of Cryptococcus have differences in pathogenicity, diagnosis,...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-68978-0
更新日期:2020-07-27 00:00:00
abstract::Complex societies are shaped by social relationships between multiple individuals. The pressure to track these relationships has driven the evolution of social cognition in primates. Importantly, it can be adaptive to track not only personal relationships, but also those established between third-parties. Primates hav...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-66407-w
更新日期:2020-06-17 00:00:00
abstract::The individual response of patients to propofol results from the influence of genetic factors. However, the state of knowledge in this matter still remains insufficient. The aim of our study was to determine genetic predictors of variable pharmacokinetics and pharmacodynamics of propofol within selected 9 genes coding...
journal_title:Scientific reports
pub_type: 临床试验,杂志文章
doi:10.1038/s41598-017-15657-2
更新日期:2017-11-13 00:00:00
abstract::Oligomers populated during the early amyloid aggregation process are more toxic than mature fibrils, but pinpointing the exact toxic species among highly dynamic and heterogeneous aggregation intermediates remains a major challenge. β-barrel oligomers, structurally-determined recently for a slow-aggregating peptide de...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-28649-7
更新日期:2018-07-09 00:00:00
abstract::The integration of dislocation-free Ge nano-islands was realized via selective molecular beam epitaxy on Si nano-tip patterned substrates. The Si-tip wafers feature a rectangular array of nanometer sized Si tips with (001) facet exposed among a SiO2 matrix. These wafers were fabricated by complementary metal-oxide-sem...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep22709
更新日期:2016-03-04 00:00:00
abstract::Flavonoids, theanine and caffeine are the main secondary metabolites of the tea plant (Camellia sinensis), which account for the tea's unique flavor quality and health benefits. The biosynthesis pathways of these metabolites have been extensively studied at the transcriptional level, but the regulatory mechanisms are ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-39286-z
更新日期:2019-02-25 00:00:00
abstract::The placenta has emerged as an attractive source of mesenchymal stem cells (MSCs) because of the absence of ethical issues, non-invasive access, and abundant yield. However, inflammatory cell invasion into grafts negatively impacts the survival and efficacy of transplanted cells. Previous studies have shown that synth...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-22867-9
更新日期:2018-03-15 00:00:00
abstract::Spherical radioactive caesium (Cs)-bearing microparticles (CsMPs) were emitted during the Fukushima Dai-ichi Nuclear Power Plant (FDNPP) accident in March, 2011. The emission source (timing) and formation process of these particles remain unclear. In this study, the isotopic ratios of uranium (235U and 238U) and caesi...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-59933-0
更新日期:2020-02-24 00:00:00
abstract::TLR4 is implicated in diseases associated with chronic low-grade inflammation, yet homeostatic signaling mechanisms that prevent and/or are affected by chronic TLR4 activation are largely uncharacterized. We recently reported that LPS/TLR4 activates in human leukocytes signaling intermediates (SI), abbreviated TLR4-SI...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-43347-8
更新日期:2019-05-07 00:00:00
abstract::Most studies examining the relationships between vitamin D and disease or health focus on the main 25-hydroxyvitamin D3 (25(OH)D3) metabolite, thus potentially overlooking contributions and dynamic effects of other vitamin D metabolites, the crucial roles of several of which have been previously demonstrated. The idea...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep21080
更新日期:2016-02-11 00:00:00
abstract::Recurrence risk stratification of patients undergoing primary surgical resection for hepatocellular carcinoma (HCC) is an area of active investigation, and several staging systems have been proposed to optimize treatment strategies. However, as many as 70% of patients still experience tumor recurrence at 5 years post-...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-021-81506-y
更新日期:2021-01-21 00:00:00
abstract::The life-like fidelity of organisms captured in amber is unique among all kinds of fossilization and represents an invaluable source for different fields of palaeontological and biological research. One of the most challenging aspects in amber research is the study of traits related to behaviour. Here, indirect eviden...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep34352
更新日期:2016-10-04 00:00:00
abstract::The pathogenesis of severe dengue remains unclear, particularly the mechanisms underlying the plasma leakage that results in hypovolaemic shock in a small proportion of individuals. Maximal leakage occurs several days after peak viraemia implicating immunological pathways. Skin is a highly vascular organ and also an i...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-14640-1
更新日期:2017-10-27 00:00:00
abstract::Zircon of crustal origin found in mantle-derived rocks is of great interest because of the information it may provide about crust recycling and mantle dynamics. Consideration of this requires understanding of how mantle temperatures, notably higher than zircon crystallization temperatures, affected the recycled zircon...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-30934-4
更新日期:2018-08-27 00:00:00
abstract::Chronic hepatitis viral infection, alcoholic intoxication, and obesity cause liver fibrosis, which progresses to decompensated liver cirrhosis, a disease for which medical demands cannot be met. Since there are currently no approved anti-fibrotic therapies for established liver fibrosis, the development of novel modal...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-43298-0
更新日期:2019-05-02 00:00:00
abstract::The demand for patterning functional materials precisely on surfaces of stimuli-responsive devices has increased in many research fields. In situ polymerization technology is one of the most convenient ways to place the functional materials on a desired location with micron-scale accuracy. To fabricate stimuli-respons...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep15629
更新日期:2015-10-22 00:00:00
abstract::Attachment of nanoparticles (NPs) to the surface of carrier red blood cells (RBCs) profoundly alters their interactions with the host organism, decelerating NP clearance from the bloodstream while enabling NP transfer from the RBC surface to the vascular cells. These changes in pharmacokinetics of NPs imposed by carri...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-19897-8
更新日期:2018-01-25 00:00:00
abstract::Amorphous solid dispersion (ASD) is a widely employed formulation technique for drugs with poor aqueous solubility. Polymers are integral components of ASDs, but mechanisms by which polymers lead to the generation and maintenance of supersaturated solutions, which enhance oral absorption in vivo, are poorly understood...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-75077-7
更新日期:2020-10-28 00:00:00
abstract::The poor control of the adhesion of TiO2 nanotubes (TNTs) layers to a non-anodized titanium (Ti) substrate has limited their widespread application, because the stripping mechanism has not yet been revealed. Here, we report a novel method to control the detachment of TNTs by post-treatment of the as-fabricated samples...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep07178
更新日期:2014-11-24 00:00:00
abstract::Once activated, the intracellular receptor NLRP3 assembles an inflammasome protein complex that facilitates the caspase-1-mediated maturation of IL-1β and IL-18. Inactive NLRP3 is guarded by a protein complex containing Hsp90. In response to stress stimuli, Hsp90 is released, and NLRP3 can be activated to promote infl...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-25123-2
更新日期:2018-04-30 00:00:00
abstract::Zika virus infection and dengue and chikungunya fevers are emerging viral diseases that have become public health threats. Their aetiologic agents are transmitted by the bite of genus Aedes mosquitoes. Without effective therapies or vaccines, vector control is the main strategy for preventing the spread of these disea...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-39666-5
更新日期:2019-03-11 00:00:00
abstract::The increasing incidence of obesity accentuates the importance of identifying mechanisms and optimal therapeutic strategies for patients with heart failure (HF) in relation to obesity status. Here, we investigated the association between plasma level of apelin, an adipocyte-derived factor, and clinicopathological feat...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep16104
更新日期:2015-11-06 00:00:00