68 research outputs found
Papers of Joseph Hone Index: Royal Society Collection
Letter from J. Hone to J.B.Mather
5 Feb 1855 and
official notification of appointment of Joseph
Hone as Commissioner of Insolvent Estates for
Hobart
2 Aug. 1839
RS. 2
Nano-Bio-Technology and Sensing Chips: New Systems for Detection in Personalized Therapies and Cell Biology
Further advances in molecular medicine and cell biology also require new electrochemical systems to detect disease biomarkers and therapeutic compounds. Microelectronic technology offers powerful circuits and systems to develop innovative and miniaturized biochips for sensing at the molecular level. However, microelectronic biochips proposed in the literature often do not show the right specificity, sensitivity, and reliability required by biomedical applications. Nanotechnology offers new materials and solutions to improve the surface properties of sensing probes. The aim of the present paper is to review the most recent progress in Nano-Bio-Technology in the area of the development of new electrochemical systems for molecular detection in personalized therapy and cell culture monitoring
Long-Lived Phonon Polaritons in Hyperbolic Materials
Natural hyperbolic materials with dielectric permittivities of opposite signs along different principal axes can confine long-wavelength electromagnetic waves down to the nanoscale, well below the diffraction limit. Confined electromagnetic waves coupled to phonons in hyperbolic dielectrics including hexagonal boron nitride (hBN) and α-MoO3 are referred to as hyperbolic phonon polaritons (HPPs). HPP dissipation at ambient conditions is substantial, and its fundamental limits remain unexplored. Here, we exploit cryogenic nanoinfrared imaging to investigate propagating HPPs in isotopically pure hBN and naturally abundant α-MoO3 crystals. Close to liquid-nitrogen temperatures, losses for HPPs in isotopic hBN drop significantly, resulting in propagation lengths in excess of 8 μm, with lifetimes exceeding 5 ps, thereby surpassing prior reports on such highly confined polaritonic modes. Our nanoscale, temperature-dependent imaging reveals the relevance of acoustic phonons in HPP damping and will be instrumental in mitigating such losses for miniaturized mid-infrared technologies operating at liquid-nitrogen temperatures.Research at Columbia is supported by Vannevar Bush Faculty
Fellowship ONR-VB: N00014-19-1-2630. We thank A.
Sternbach and S. Zhang for helpful discussions. Exfoliation
and transfer of hBN onto desired substrates and electron beam
lithography of gold disks were performed by J.T.M. and
supported by the National Science Foundation
(DMR1904793). Additional structure fabrication was supported
by the Center on Precision-Assembled Quantum
Materials, funded through the U.S. National Science
Foundation (NSF) Materials Research Science and Engineering
Centers (award no. DMR-2011738). Initial simulations
and experimental design from Vanderbilt were provided by
J.D.C. in collaboration with the Columbia team (D.N.B. and
G.N.) and was supported by the Office of Naval Research
(N00014-18-1-2107). The hBN phonon band structure
calculation was performed by R.C. and L.A. and supported
by the Spanish MINECO/FEDER grant (MAT2015-71035-
R). Cryogenics nano-optics experiments at Columbia were
solely supported as part of Programmable Quantum Materials,
an Energy Frontier Research Center funded by the U.S.
Department of Energy (DOE), Office of Science, Basic Energy
Sciences (BES), under award no. DE-SC0019443. D.N.B is the
Gordon and Betty Moore Foundation’s EPiQS Initiative
Investigator no. 9455.Peer reviewe
The end of the line: literature and party politics at the accession of Queen Anne
This thesis provides the first full-length account of the political and cultural significance of the accession of Queen Anne. It offers a critical reassessment of the politics of the royal image across a spectrum of texts, events, and artefacts—from panegyrics, newspapers, sermons, royal progresses, and processions to medals, coins, and playing cards. Recent scholarship has emphasized the importance of party politics to the literature and culture of the early eighteenth century. This thesis nuances that assumption by arguing: (1) that the principal focus of partisan texts was competing representations of monarchy; and (2) that the explosion of partisanship at the start of the eighteenth century was triggered by unrest about the royal succession. Anne was the last protestant Stuart. She had no surviving children. This thesis explores how authors such as Daniel Defoe, Joseph Addison, Alexander Pope, and a great many lesser known and anonymous writers and propagandists conceptualized the end of the Stuart dynasty. Anne's accession forced writers to conjecture on the future succession. There were two rival claimants to the throne after Anne’s death: the protestant Electress Sophia of Hanover and Anne's Catholic half-brother, James Francis Edward. Sophia's claim was statutory, James's hereditary. Factions emerged in support of both claimants. Almost all topical writing took a stance on the issue. Many sided with the government, supporting Hanover. Yet some writers favoured the illegal but hereditary claim of James Francis Edward; they had to express support in covert ways. This succession crisis triggered not only printed polemic, but also swathes of clandestine manuscript literature circulating in the Jacobite underground. The government took a hard line on Jacobite writers and printers; this thesis documents both their persecution and the techniques they used to evade the law. The thesis concludes by suggesting that this oppositional literary culture only disintegrated after the defeat of the Jacobite rebellion, and the consequent settlement of the Hanoverian succession, in late 1716. After this point, royal succession ceased to be a major source of political discontent.</p
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On the Character of a 'Great Patriot': A New Essay Ascribed to Bolingbroke
This article presents the first addition in recent years to the canon of the British eighteenth-century statesman and political thinker Lord Bolingbroke (1678-1751), a manuscript essay 'On the Character of a Great Patriot'. For the first time, this article identifies Bolingbroke as the likely author of this unascribed, undated, and untitled essay in the Senate House Library manuscript collection. Using internal and contextual evidence, the article demonstrates that the 'Character' is a description of Bolingbroke's opposition colleague William Pulteney, and that it was written in the final months of 1731, mostly likely for publication in the opposition journal the Craftsman. The 'Character' dates from a period in which Bolingbroke wrote very little, and it is thus a crucial addition to his biography as well as an early exposition of his theory of opposition politics. Moreover, study of the essay shows that Bolingbroke drew extensively on the example of Pultneye when formulating his idea about the necessity of a systematic opposition party, not fully formulated until On the Spirit of Patriotism (1736). The 'Character' thus sheds further light on the important relationship between political practice and theory in the age of Walpole
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