Abstract:
:We investigate the role of the spatial evolution of the acoustic field in stimulated Brillouin scattering processes in short high-gain structures. When the gain is strong enough that the gain length becomes comparable to the acoustic wave decay length of order 100 microns, standard approximations treating the acoustic field as a local response no longer apply. Treating the acoustic evolution more accurately, we find that the backward SBS gain of sub-millimetre long waveguides is significantly reduced from the value obtained by the conventional treatment because the acoustic mode requires several decay lengths to build up to its nominal value. In addition, the corresponding resonance line is broadened with the development of side bands. In contrast, we argue that intra-mode forward SBS is not expected to show these effects. Our results have implications for several recent proposals and experiments on high-gain stimulated Brillouin scattering in short semiconductor waveguides.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Wolff C,Steel MJ,Eggleton BJ,Poulton CGdoi
10.1038/srep13656subject
Has Abstractpub_date
2015-09-04 00:00:00pages
13656issn
2045-2322pii
srep13656journal_volume
5pub_type
杂志文章abstract::Maize streak virus disease (MSVD), caused by Maize streak virus (MSV; genus Mastrevirus), is one of the most severe and widespread viral diseases that adversely reduces maize yield and threatens food security in Africa. An effective control and management of MSVD requires robust and sensitive diagnostic tests capable ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-76612-2
更新日期:2020-11-12 00:00:00
abstract::Geriatric trauma is a major socio-economic problem, especially among the aging Japanese society. Geriatric people are more vulnerable to trauma than younger people; thus, their outcomes are often severe. This study evaluates the characteristics of geriatric trauma divided by age in the Japanese population. We evaluate...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-76149-4
更新日期:2020-11-05 00:00:00
abstract::Luminance plays a modulating role in the processes of several visual tasks, which in turn provides significant information for the understanding of visual processing. Here, using a binocular phase combination paradigm, we studied the effect of unilateral changes in mean luminance on binocular combination in both norma...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep02012
更新日期:2013-01-01 00:00:00
abstract::Inspired by the well-documented tumor protecting ability of paullones, recently, we synthesized novel paullone-like scaffolds, indole-fused benzo-oxazepines (IFBOs), and screened them against hepatocellular carcinoma (HCC) specific Hep-G2 cells. Three of the synthesized compounds significantly attenuated the progressi...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-24288-0
更新日期:2018-04-12 00:00:00
abstract::Infrared detection devices are becoming miniature with micro or nano-scale size. The advantages of downsizing come on the expense of insufficient collection of infrared radiation. Therefore, utilizing nano-plasmonic optical antennas becomes mandatory. However, it is desirable to develop antennas with broad bandwidth, ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-48648-6
更新日期:2019-08-21 00:00:00
abstract::It has been a long-standing puzzle why buckled dimers of the Si(001) surface appeared symmetric below ~20 K in scanning tunneling microscopy (STM) experiments. Although such symmetric dimer images were concluded to be due to an artifact induced by STM measurements, its underlying mechanism is still veiled. Here, we de...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep27868
更新日期:2016-06-13 00:00:00
abstract::The study of postsynaptic excitation to inhibition (E/I ratio) imbalances in human brain diseases, is a highly relevant functional measurement poorly investigated due to postmortem degradation of synaptic receptors. We show that near-simultaneous recording of microtransplanted synaptic receptors after simulated morgue...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-65377-3
更新日期:2020-05-25 00:00:00
abstract::Infants' sensitivity to selectively attend to human speech and to process it in a unique way has been widely reported in the past. However, in order to successfully acquire language, one should also understand that speech is a referential, and that words can stand for other entities in the world. While there has been ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep13594
更新日期:2015-09-01 00:00:00
abstract::The interplay between spin states and metallization in compressed CoCl2 is investigated by combining diffraction, resistivity and spectroscopy techniques under high-pressure conditions and ab-initio calculations. A pressure-induced metallization along with a Co2+ high-spin (S = 3/2) to low-spin (S = 1/2) crossover tra...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-41337-4
更新日期:2019-04-01 00:00:00
abstract::Duckweed species have a great potential to develop into fast-growing crops for water remediation and bioenergy production. Seed production and utilization of hybrid vigour are essential steps in this process. However, even in the extensively-studied duckweed species, Lemna gibba, flower primordia were often aborted pr...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-03240-8
更新日期:2017-06-08 00:00:00
abstract::Magnolia sirindhorniae Noot. & Chalermglin is an endangered species with high ornamental and commercial value that needs to be urgently protected and judiciously commercialized. In this study, a protocol for efficient regeneration of this species is standardized. The lateral buds of the M. sirindhorniae plant were use...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-46050-w
更新日期:2019-07-03 00:00:00
abstract::During Antarctic isolation personnel are exposed to extreme photoperiods. A frequent observation is a sleep onset phase delay during winter. It is not known if, as a result, daytime sleeping in the form of naps increases. We sought to assess sleep patterns - with focus on daytime sleeping - and alertness in a Latin Am...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-46900-7
更新日期:2019-07-26 00:00:00
abstract::Arsenic contamination of groundwater is a serious concern worldwide. The research gaps in removing arsenic are selectivity, regeneration and effective removal rate at neutral pH levels. In this study, we discussed the reasons of the high arsenic adsorption from groundwater of our previously developed adsorbent, a cati...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-48233-x
更新日期:2019-08-15 00:00:00
abstract::Laser-Stimulated Fluorescence (LSF) is used to identify fully fledged feathering in the hatchling enantiornithine bird specimen MPCM-LH-26189, supporting precocial nesting behavior in this extinct group. The LSF results include the detection of a long pennaceous wing feather as well as cover feathers around the body. ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-41423-7
更新日期:2019-03-21 00:00:00
abstract::Northern and tropical peatlands represent a globally significant carbon reserve accumulated over thousands of years of waterlogged conditions. It is unclear whether moderate drying predicted for northern peatlands will stimulate burning and carbon losses as has occurred in their smaller tropical counterparts where the...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep08063
更新日期:2015-01-27 00:00:00
abstract::The ubiquitin-proteasomal degradation mechanism has gained the attention over the past decade. The E2 ubiquitin conjugating enzymes are the crucial part of ubiquitination mechanism and they are believed to hold imperative association for plant development. It accepts ubiquitin from the E1 enzyme and interacts with the...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-09121-4
更新日期:2017-08-17 00:00:00
abstract::Low pH in the tumor micromilieu is a recognized pathological feature of cancer. This attribute of cancerous cells has been targeted herein for the controlled release of chemotherapeutics at the tumour site, while sparing healthy tissues. To this end, pH-sensitive, hollow ZnO-nanocarriers loaded with paclitaxel were sy...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/srep11760
更新日期:2015-07-06 00:00:00
abstract::Pain is a highly unpleasant sensory and emotional experience, and no objective diagnosis test exists to assess it. In clinical practice there are two main methods for the estimation of pain, a patient's self-report and clinical judgement. However, these methods are highly subjective and the need of biomarkers to measu...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-42098-w
更新日期:2019-04-04 00:00:00
abstract::Incredible accomplishments have been achieved in agricultural production in China, but many demanding challenges for ensuring food security and environmental sustainability remain. Field experiments were conducted from 2011-2013 at three different sites, including Honghu, Shayang, and Jingzhou in China, to determine t...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-01412-0
更新日期:2017-04-28 00:00:00
abstract::Neoadjuvant systemic treatment is increasingly being integrated in the standard treatment of pancreatic ductal adenocarcinoma (PDAC) patients to improve oncological outcomes. Current available imaging techniques remain unreliable in assessing response to therapies, as they cannot distinguish between (vital) tumor tiss...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-73242-6
更新日期:2020-10-01 00:00:00
abstract::Beta amyloid peptides (Aβ) are known risk factors involved in cognitive impairment, neuroinflammatory and apoptotic processes in Alzheimer's disease (AD). Phosphodiesterase 2 (PDE2) inhibitors increase the intracellular cAMP and/or cGMP activities, which may ameliorate cognitive deficits associated with AD. However, i...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-08070-2
更新日期:2017-09-21 00:00:00
abstract::We are presenting a compact radar range system with a scale factor of 105. Replacing the radio frequency (RF) by optical wavelength (300 THz), the system easily fit on a tabletop. We used interferometric time-of-flight to reproduce radar ranging measurements. Sub-micron range accuracy was achieved with a 100 fs laser ...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-32846-9
更新日期:2018-09-27 00:00:00
abstract::Gram-negative bacteria belonging to the genus Klebsiella are important nosocomial pathogens, readily acquiring resistance to all known antibiotics. Bacteriocins, non-antibiotic antibacterial proteins, have been earlier proposed as potential therapeutic agents for control of other Gram-negative species such as Escheric...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-51969-1
更新日期:2019-10-28 00:00:00
abstract::Pathologic diagnoses mainly depend on visual scoring by pathologists, a process that can be time-consuming, laborious, and susceptible to inter- and/or intra-observer variations. This study proposes a novel method to enhance pathologic scoring of renal allograft rejection. A fully automated system using a convolutiona...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-019-41479-5
更新日期:2019-03-26 00:00:00
abstract::Ribonucleotide reductases (RNR) catalyze the last step of deoxyribonucleotide synthesis, and are therefore essential to DNA-based life. Three forms of RNR exist: classes I, II, and III. While eukaryotic cells use only class Ia RNR, bacteria can harbor any combination of classes, granting them adaptability. The opportu...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-17917-7
更新日期:2017-12-20 00:00:00
abstract::The demand for rapid, consistent and easy-to-use techniques for detecting and identifying pathogens in various areas, such as clinical diagnosis, the pharmaceutical industry, environmental science and food inspection, is very important. In this study, the reference strains of six food-borne pathogens, namely, Escheric...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-59448-8
更新日期:2020-02-11 00:00:00
abstract::Invasive alien species represent one of the major factors of global loss of biodiversity and disruption of natural ecosystems. The small Indian mongoose, Urva auropunctata, is considered one of the wild carnivore species with the greatest negative impact on global biodiversity. Understanding of the factors underpinnin...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-020-64502-6
更新日期:2020-05-04 00:00:00
abstract::We aimed to systematically investigate the potential association of matrix metalloproteinase (MMP)-9, -3, -2, and -8 gene polymorphisms with susceptibility to periodontitis using meta-analysis. A literature search in PubMed, Embase, and Web of Science was conducted to obtain relevant publications. Finally a total of 1...
journal_title:Scientific reports
pub_type: 杂志文章,meta分析
doi:10.1038/srep24812
更新日期:2016-04-20 00:00:00
abstract::GABAA receptor-mediated inhibition depends on the maintenance of low level intracellular [Cl-] concentration, which in adult depends on neuron specific K+-Cl- cotransporter-2 (KCC2). Previous studies have shown that KCC2 was downregulated in both epileptic patients and various epileptic animal models. However, the tem...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-017-00196-7
更新日期:2017-03-13 00:00:00
abstract::Aldehyde dehydrogenase (ALDH) is a key enzyme for the catalytic oxidation of acetaldehyde to acetic acid. Genetic polymorphisms of ALDH2 have been associated with a wide range of diseases and cancers. However, little information is found about the association between ALDH2 polymorphisms and lumbar disc herniation (LDH...
journal_title:Scientific reports
pub_type: 杂志文章
doi:10.1038/s41598-018-31491-6
更新日期:2018-08-30 00:00:00