LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 36

Search options

  1. Article ; Online: Near-zero stiffness accelerometer with buckling of tunable electrothermal microbeams.

    Hussein, Hussein / Wang, Chen / Amendoeira Esteves, Rui / Kraft, Michael / Fariborzi, Hossein

    Microsystems & nanoengineering

    2024  Volume 10, Page(s) 43

    Abstract: Pre-shaped microbeams, curved or inclined, are widely used in MEMS for their interesting stiffness properties. These mechanisms allow a wide range of positive and negative stiffness tuning in their direction of motion. A mechanism of pre-shaped beams ... ...

    Abstract Pre-shaped microbeams, curved or inclined, are widely used in MEMS for their interesting stiffness properties. These mechanisms allow a wide range of positive and negative stiffness tuning in their direction of motion. A mechanism of pre-shaped beams with opposite curvature, connected in a parallel configuration, can be electrothermally tuned to reach a near-zero or negative stiffness behavior at the as-fabricated position. The simple structure helps incorporate the tunable spring mechanism in different designs for accelerometers, even with different transduction technologies. The sensitivity of the accelerometer can be considerably increased or tuned for different applications by electrothermally changing the stiffness of the spring mechanism. Opposite inclined beams are implemented in a capacitive micromachined accelerometer. The measurements on fabricated prototypes showed more than 55 times gain in sensitivity compared to their initial sensitivity. The experiments showed promising results in enhancing the resolution of acceleration sensing and the potential to reach unprecedent performance in micromachined accelerometers.
    Language English
    Publishing date 2024-03-22
    Publishing country England
    Document type Journal Article
    ISSN 2055-7434
    ISSN (online) 2055-7434
    DOI 10.1038/s41378-024-00657-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  2. Article: Python-Based Open-Source Electro-Mechanical Co-Optimization System for MEMS Inertial Sensors.

    Amendoeira Esteves, Rui / Wang, Chen / Kraft, Michael

    Micromachines

    2021  Volume 13, Issue 1

    Abstract: The surge in fabrication techniques for micro- and nanodevices gave room to rapid growth in these technologies and a never-ending range of possible applications emerged. These new products significantly improve human life, however, the evolution in the ... ...

    Abstract The surge in fabrication techniques for micro- and nanodevices gave room to rapid growth in these technologies and a never-ending range of possible applications emerged. These new products significantly improve human life, however, the evolution in the design, simulation and optimization process of said products did not observe a similarly rapid growth. It became thus clear that the performance of micro- and nanodevices would benefit from significant improvements in this area. This work presents a novel methodology for electro-mechanical co-optimization of micro-electromechanical systems (MEMS) inertial sensors. The developed software tool comprises geometry design, finite element method (FEM) analysis, damping calculation, electronic domain simulation, and a genetic algorithm (GA) optimization process. It allows for a facilitated system-level MEMS design flow, in which electrical and mechanical domains communicate with each other to achieve an optimized system performance. To demonstrate the efficacy of the methodology, an open-loop capacitive MEMS accelerometer and an open-loop Coriolis vibratory MEMS gyroscope were simulated and optimized-these devices saw a sensitivity improvement of 193.77% and 420.9%, respectively, in comparison to their original state.
    Language English
    Publishing date 2021-12-21
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2620864-7
    ISSN 2072-666X
    ISSN 2072-666X
    DOI 10.3390/mi13010001
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  3. Article ; Online: The COVID-19 and bond spreads

    Esteves, Rui / Sussman, Nathan

    The Economists’ Voice

    2020  

    Abstract: Abstract Financial markets reacted with a vengeance to the COVID-19 pandemic. We argue that while the spread of the pandemic is statistically significant in explaining changes to bond spreads, it has little additional explanatory power over variables ... ...

    Abstract Abstract Financial markets reacted with a vengeance to the COVID-19 pandemic. We argue that while the spread of the pandemic is statistically significant in explaining changes to bond spreads, it has little additional explanatory power over variables that capture financial stress. Financial markets reacted as in any international financial crisis by penalizing emerging economies exposing existing vulnerabilities. This finding highlights the need for credible, but flexible, sovereign currencies and the need to build up liquidity reserves.
    Keywords General Business, Management and Accounting ; General Economics, Econometrics and Finance ; covid19
    Publisher Walter de Gruyter GmbH
    Publishing country de
    Document type Article ; Online
    ISSN 1553-3832
    DOI 10.1515/ev-2020-0013
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  4. Book: The rise of new corruption

    Esteves, Rui / Mesevage, Gabriel Geisler

    British MPS during the railway mania of 1845

    (Discussion paper series / Centre for Economic Policy Research : Economic history and public economics ; DP 12182)

    2017  

    Author's details Rui Esteves and Gabriel Geisler Mesevage
    Series title Discussion paper series / Centre for Economic Policy Research : Economic history and public economics ; DP 12182
    Keywords Großbritannien ; Bahnpolitik ; Abstimmungsregel ; Schienenstrecke ; Eisenbahnunternehmen ; Börsenkurs ; Spekulationsblase ; Politiker ; Rent-Seeking ; Soziales Netzwerk
    Language English
    Size 43, vii Seiten, Illustrationen
    Document type Book
    Note Erscheint auch als Online-Ausgabe
    Database ECONomics Information System

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  5. Article: The bondholder, the sovereign, and the banker

    Esteves, Rui Pedro

    European review of economic history Vol. 17, No. 4 , p. 389-407

    sovereign debt and bondholders' protection before 1914

    2013  Volume 17, Issue 4, Page(s) 389–407

    Author's details Rui Pedro Esteves
    Keywords Öffentliche Anleihe ; Länderrisiko ; Anlegerschutz ; Welt
    Language English
    Publisher Oxford Univ. Press
    Publishing place Oxford
    Document type Article
    ZDB-ID 1340974-8 ; 2031356-1
    ISSN 1474-0044 ; 1361-4916
    ISSN (online) 1474-0044
    ISSN 1361-4916
    Database ECONomics Information System

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  6. Book: Feeling the blues

    Esteves, Rui / Tuncer, Ali Coskun

    moral hazard and debt dilution in Eurobonds before 1914

    (Discussion paper series / Centre for Economic Policy Research : Economic history and international macroeconomics ; 9860)

    2014  

    Author's details Rui Esteves and Ali Coskun Tuncer
    Series title Discussion paper series / Centre for Economic Policy Research : Economic history and international macroeconomics ; 9860
    Keywords Geschichte ; Europa ; Eurobond ; Moral Hazard ; Eurozone ; Internationale Anleihe ; Öffentliche Anleihe ; Bürgschaft ; Haftung ; Schuldenübernahme ; Ausländisch
    Language English
    Size 51 S., graph. Darst.
    Publisher Centre for Economic Policy Research
    Publishing place London
    Document type Book
    Database ECONomics Information System

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  7. Article: The first global emerging markets investor: foreign & colonial investment trust 1880–1913/ David Chambers; Rui Esteves

    Chambers, David / Esteves, Rui

    Explorations in economic history : EEH Vol. 52 , p. 1-21

    2014  Volume 52, Page(s) 1–21

    Keywords Financial globalisation ; Institutional investors ; Emerging markets ; Contagion ; Pre-1913
    Language English
    Size graph. Darst.
    Publisher Elsevier
    Publishing place Amsterdam
    Document type Article
    ZDB-ID 401138-7 ; 1466941-9
    ISSN 0014-4983 ; 0014-4983
    ISSN (online) 0014-4983
    ISSN 0014-4983
    Database ECONomics Information System

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

  8. Book ; Online: The belle epoque of international finance

    Esteves, Rui Pedro

    French capital exports, 1880 - 1914

    (Department of Economics discussion paper series / University of Oxford ; 534)

    2011  

    Author's details Rui Pedro Esteves
    Series title Department of Economics discussion paper series / University of Oxford ; 534
    Keywords Kapitalmobilität ; Kapitalexport ; Wirtschaftsgeschichte ; Frankreich
    Language English
    Size Online-Ressource (PDF-Datei: 59 S.), graph. Darst.
    Publisher Univ. of Oxford, Dep. of Economics
    Publishing place Oxford
    Document type Book ; Online
    Note IMD-Felder maschinell generiert
    Database ECONomics Information System

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  9. Book ; Online: The political economy of global financial liberalisation in historical perspective

    Esteves, Rui P

    (Discussion papers in economic and social history ; 89)

    2011  

    Author's details Rui P. Esteves
    Series title Discussion papers in economic and social history ; 89
    Keywords Internationaler Finanzmarkt ; Finanzmarktregulierung ; Wirtschaftsgeschichte ; Welt
    Language English
    Size Online-Ressource (PDF-Datei: 37 S.)
    Publisher Oxford Univ., Faculty of Modern History
    Publishing place Oxford
    Document type Book ; Online
    Note IMD-Felder maschinell generiert
    Database ECONomics Information System

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  10. Article ; Online: Eurobonds past and present

    Esteves, Rui Pedro / Tunçer, Ali Coşkun

    Review of law and economics : publ. in cooperation with European Association of Law and Economics Vol. 12, No. 3 , p. 659-688

    a comparative review on debt mutualization in Europe

    2016  Volume 12, Issue 3, Page(s) 659–688

    Author's details Rui Pedro Esteves and Ali Coşkun Tunçer
    Keywords debt mutualization ; debt dilution ; moral hazard ; conditionality ; pre-1914
    Language English
    Size Online-Ressource
    Publisher De Gruyter
    Publishing place Berlin
    Document type Article ; Online
    ZDB-ID 2191851X
    ISSN 1555-5879
    DOI 10.1515/rle-2016-0047
    Database ECONomics Information System

    More links

    Kategorien

    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

To top