Abstract：
:This paper presents a study of noise in room-temperature THz radiometers that use THz-to-optical upconversion followed by optical detection of thermal radiation. Despite some undesired upconverted thermal noise, no noise is intrinsically introduced by efficient electro-optic modulation via a sum-frequency-generation process in high quality factor (Q) whispering-gallery mode (WGM) resonators. However, coherent and incoherent optical detection results in fundamentally different noise characteristics. The analysis shows that the upconversion receiver is quantum limited like conventional amplifiers and mixers, only when optical homodyne or heterodyne detection is performed. However, this type of receiver shows advantages as a THz photon counter, where counting is in the optical domain. Theoretical predictions show that upconversion-based room-temperature receivers can outperform state-of-the-art cooled and room-temperature THz receivers based on low-noise amplifiers and mixers, provided that a photon conversion efficiency greater than 1% is realized. Although the detection bandwidth is naturally narrow due to the highly resonant electro-optic modulator, it is not fundamentally limited and can be broadened by engineering selective optical coupling mechanisms to the resonator.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Santamaría-Botello G,Popovic Z,Abdalmalak KA,Segovia-Vargas D,Brown ER,García Muñoz LEdoi
10.1038/s41598-020-65987-xsubject
Has Abstractpub_date
2020-06-10 00:00:00pages
9403issue
1issn
2045-2322pii
10.1038/s41598-020-65987-xjournal_volume
10pub_type
杂志文章abstract：:The transfer of the flexor hallucis longus tendon or flexor digitorum longus tendon is frequently used for the treatment of posterior tibial tendon insufficiency or chronic Achilles tendinopathy. According to several anatomical studies, harvesting the flexor hallucis longus (FHL) tendon may cause nerve injury. Sixty-e...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-13742-0
更新日期：2017-10-27 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：:The brain is a paradigmatic example of a complex system: its functionality emerges as a global property of local mesoscopic and microscopic interactions. Complex network theory allows to elicit the functional architecture of the brain in terms of links (correlations) between nodes (grey matter regions) and to extract ...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-04716-3
更新日期：2017-07-07 00:00:00
abstract：:Insecticide-treated nets (ITNs) remain major components for vector control despite the spread of resistance mechanisms among mosquito populations. Multiple exposures to pyrethroids may induce physiological and behavioral changes in mosquitoes, possibly reducing efficacy of control tools. Despite epidemiological releva...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-019-44633-1
更新日期：2019-06-03 00:00:00
abstract：:Diagnostic criteria for pathological gambling and alcohol dependence (AD) include repeated addictive behavior despite severe negative consequences. However, the concept of loss aversion (LA) as a facet of value-based decision making has not yet been used to directly compare these disorders. We hypothesized reduced LA ...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-16433-y
更新日期：2017-11-24 00:00:00
abstract：:A polarized macrophage response into inflammatory (M1) or regenerative/anti-inflammatory (M2) phenotypes is critical in host response to multiple intracellular bacterial infections. Ehrlichia is an obligate Gram-negative intracellular bacterium that causes human monocytic ehrlichiosis (HME): a febrile illness that may...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-019-50320-y
更新日期：2019-10-01 00:00:00
abstract：:The objective of this study was to unveil the potential mechanism of focused ultrasound (FUS)-enhanced intranasal (IN) brain drug delivery and assess its feasibility in the delivery of therapeutic molecules. Delivery outcomes of fluorescently-labeled dextrans to mouse brains by IN administration either before or after...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep28599
更新日期：2016-06-27 00:00:00
abstract：:Succeeding in breeding super hybrid rice has been considered as a great progress in rice production in China. This on-farm study was conducted with Minirhizotron techniques to identify dynamic root morphological traits and distribution (0-30 cm) under different nitrogen treatments. Five elite super hybrid rice cultiva...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-18576-4
更新日期：2018-01-09 00:00:00
abstract：:The 14-3-3-related protein SMG7 plays critical roles in regulation of DNA damage response and nonsense-mediated mRNA decay (NMD). Like 14-3-3, SMG7 engages phosphoserine-dependent protein interactions; however, the precise role of phosphorylation-mediated SMG7 binding remains unknown. Here, we show that DNA damage-ind...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-019-49229-3
更新日期：2019-09-11 00:00:00
abstract：:In 2013, U.S. swine producers were confronted with the disruptive emergence of porcine epidemic diarrhoea (PED). Movement of animals among farms is hypothesised to have played a role in the spread of PED among farms. Via this or other mechanisms, the rate of spread may also depend on the geographic density of farms an...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep22248
更新日期：2016-03-07 00:00:00
abstract：:Vitamin D is important in multiple health conditions. Vitamin D deficiency is prevalent globally even with exposure to adequate sunlight. Reduction in provitamin D3 (7-dehydrocholesterol, 7-DHC) is an important cause of vitamin D3 deficiency. Vitamin supplementation, food fortification, and use of probiotics are some ...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-019-55699-2
更新日期：2019-12-17 00:00:00
abstract：:CDK5 Regulatory Subunit-Associated Protein 1-like 1 (CDKAL1) was identified as a susceptibility gene for type 2 diabetes and body mass index in genome-wide association studies. Although it was reported that CDKAL1 is a methylthiotransferase essential for tRNALys(UUU) and faithful translation of proinsulin generated in...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-06469-5
更新日期：2017-08-04 00:00:00
abstract：:In the fifty years since the postulation of Moore's Law, the increasing energy consumption in silicon electronics has motivated research into emerging devices. An attractive research direction is processing information via the phase of spin waves within magnonic-logic circuits, which function without charge transport ...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-08114-7
更新日期：2017-08-11 00:00:00
abstract：:Oxidative stress and mitochondrial dysfunction are implicated in aging-related neurodegenerative disorders. 8-Oxoguanine (8-oxoG), a common oxidised base lesion, is often highly accumulated in brains from patients with neurodegenerative disorders. MTH1 hydrolyses 8-oxo-2'-deoxyguanosine triphosphate (8-oxo-dGTP) to 8-...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep22086
更新日期：2016-02-25 00:00:00
abstract：:Ontogenetic information is crucial to understand life histories and represents a true challenge in dinosaurs due to the scarcity of growth series available. Mussaurus patagonicus was a sauropodomorph dinosaur close to the origin of Sauropoda known from hatchling, juvenile and mature specimens, providing a sufficiently...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-019-44037-1
更新日期：2019-05-20 00:00:00
abstract：:The development of novel small molecule inhibitors of the cancer-associated tropomyosin 3.1 (Tpm3.1) provides the ability to examine the metabolic function of specific actin filament populations. We have determined the ability of these anti-Tpm (ATM) compounds to regulate glucose metabolism in mice. Acute treatment (1...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-018-22946-x
更新日期：2018-03-15 00:00:00
abstract：:Global climate change has resulted in a warmer Arctic, with projections indicating accelerated modifications to permafrost in the near future. The thermal, hydrological, and mechanical physics of permafrost thaw have been hypothesized to couple in a complex fashion but data collection efforts to study these feedbacks ...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-018-29292-y
更新日期：2018-07-19 00:00:00
abstract：:To survive and replicate in macrophages Mycobacterium tuberculosis (Mtb) has developed strategies to subvert host defence mechanisms, including autophagy. Autophagy induction has the potential to clear Mtb, but little is known about its effect during controlled tuberculosis and HIV co-infection. Mammalian target of ra...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep28171
更新日期：2016-06-15 00:00:00
abstract：:Population structure and biogeography of marine organisms are formed by different drivers than in terrestrial organisms. Yet, very little information is available even for common marine organisms and even less for their associated parasites. Here we report the first analysis of population structure of both a cephalopo...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-019-50555-9
更新日期：2019-10-04 00:00:00
abstract：:Dichapetalum cymosum produces the toxic fluorinated metabolite, fluoroacetate, presumably as a defence mechanism. Given the rarity of fluorinated metabolites in nature, the biosynthetic origin and function of fluoroacetate have been of particular interest. However, the mechanism for fluorination in D. cymosum was neve...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-020-77598-7
更新日期：2020-11-25 00:00:00
abstract：:Liquid repellent surfaces typically work by keeping the fouling liquid in a metastable state, with trapped pockets of air between the substrate and the liquid. An alternative method with greater long-term stability utilizes liquid-impregnated surfaces, where the liquid being repelled slides over an immiscible liquid i...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-06621-1
更新日期：2017-07-20 00:00:00
abstract：:Lung cancer is the foremost cause of cancer related deaths in the U.S. It is a heterogeneous disease composed of genetically and phenotypically distinct tumor cells surrounded by heterotypic cells and extracellular matrix dynamically interacting with the tumor cells. Research in lung cancer is often restricted to pati...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-019-41301-2
更新日期：2019-03-20 00:00:00
abstract：:In the paradigm of materials informatics for accelerated materials discovery, the choice of feature set (i.e. attributes that capture aspects of structure, chemistry and/or bonding) is critical. Ideally, the feature sets should provide a simple physical basis for extracting major structural and chemical trends and fur...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep13285
更新日期：2015-08-25 00:00:00
abstract：:Photoacoustic (optoacoustic) imaging can visualize vasculature deep in tissue using the high contrast of hemoglobin to light, with the high-resolution possible with ultrasound detection. Since angiogenesis, one of the hallmarks of cancer, leads to increased vascularity, photoacoustics holds promise in imaging breast c...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep11778
更新日期：2015-07-10 00:00:00
abstract：:The formation of Pb, Zn, and Cu carboxylates (soaps) has caused visible deterioration in hundreds of oil paintings dating from the 15th century to the present. Through transport phenomena not yet understood, free fatty acids in the oil binding medium migrate through the paint and react with pigments containing heavy m...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-017-11525-1
更新日期：2017-09-14 00:00:00
abstract：:A role of gut-brain axis emerges in the pathophysiology of anorexia nervosa and maintaining adapted physical activity during refeeding remains discussed. We aimed to assess gastrointestinal protein metabolism and investigate the contribution of physical activity during refeeding in C57BL/6 mice with activity-based ano...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep21887
更新日期：2016-02-24 00:00:00
abstract：:Nasopharyngeal carcinoma (NPC) is an EBV-associated epithelial malignancy prevalent in southern China. Presence of treatment-resistant cancer stem cells (CSC) may associate with tumor relapse and metastasis in NPC. ICG-001 is a specific CBP/β-catenin antagonist that can block CBP/β-catenin-mediated transcription of st...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep09979
更新日期：2015-04-21 00:00:00
abstract：:Nowadays efficient down conversion for white light emission is mainly based on rare-earth doped phosphors or cadmium-containing quantum dots. Although they exhibit high luminescence efficiency, the rare-earth mining and cadmium pollution have so far led to extremely high environmental cost, which conflicts the origina...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/srep05307
更新日期：2014-06-16 00:00:00
abstract：:Effects of fertilisation and other management techniques on a weed community were evaluated during wheat growth in a rice-wheat cropping system. Fertiliser treatments were C0 (C means chemical, C0 means zero chemical fertiliser.), CN (N fertiliser), CNK (N plus K fertiliser), CNPK (N plus P and K fertiliser), CNP (N p...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-018-22389-4
更新日期：2018-03-05 00:00:00
abstract：:The interaction between matter and electromagnetic radiation provides a rich understanding of what the matter is composed of and how it can be quantified using spectrometers. In many cases, however, the calibration of the spectrometer changes as a function of time (such as in electron spectrometers), or the absolute c...
journal_title：Scientific reports
pub_type： 杂志文章
doi：10.1038/s41598-019-38482-1
更新日期：2019-02-14 00:00:00
