Relevant bibliographies by topics / Hermetic area

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Hermetic area'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Hermetic area"

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Wu, Mei-Ling, and Jia-Shen Lan. "Investigation of Adhesive’s Material in Hermetic MEMS Package for Interfacial Crack between the Silver Epoxy and the Metal Lid during the Precondition Test." Materials 14, no. 19 (2021): 5626. http://dx.doi.org/10.3390/ma14195626.

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A hermetic Micro-Electro-Mechanical Systems (MEMS) package with a metal lid is investigated to prevent lid-off failure and improve its reliability during the precondition test. While the MEMS package benefits from miniaturization and low cost, a hermetic version is highly sensitive to internal pressure caused by moisture penetration and the reflow process, thus affecting its reliability. In this research, the finite element method is applied to analyze the contact stress between the metal lid and the silver epoxy by applying the cohesive zone model (CZM). Moreover, the red dye penetration test
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Södergård, J. "Decoding the Hermetic Discourse in Salomon Trismosin's Splendor Solis - A Semiotic Study of Three Ways of Reading." Scripta Instituti Donneriani Aboensis 16 (January 1, 1996): 313–44. http://dx.doi.org/10.30674/scripta.67236.

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Alchemy and the Hermetic Art are terms that denote a most interesting transitional space, circumscribing an opaque region of human cultural history, shared between matter and psyche, between phantasmagoric reveries and practical experiments, between sincere natural theology and conscious fraud. This is an area of human experience that has been notoriously difficult to define and understand, and which has triggered off contradictory interpretations that are, in their own, of semiotic interest. It has been said that a text — in our case Splendor Solis, and the Hermetic–alchemical texts at large
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Sevekar, Shrirang, Poonam Shingare, Vivek Jogani, Mihir Jha, and Sonal D. Patil. "Pediatric Obturating Materials And Techniques." Journal of Contemporary Dentistry 1, no. 2 (2011): 27–32. http://dx.doi.org/10.5005/jcd-1-2-27.

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Abstract Pulp therapy helps in preserving a pulpally involved primary tooth by eliminating bacteria and their products and ensures hermetic seal of the root canals so that the primary tooth can complete its function without harming the successor or affecting the health of the patient. A thorough understanding of the pulp morphology and root formation and resorption in primary teeth as well as different materials and techniques used is imperative for a successful pulp therapy. One of the major areas of continued research is in the area of finding obturating materials to suit the specific proper
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Koebel, Matthias M., Nancy El Hawi, Jia Lu, Felix Gattiker, and Jürg Neuenschwander. "Anodic bonding of activated tin solder alloys in the liquid state: A novel large-area hermetic glass sealing method." Solar Energy Materials and Solar Cells 95, no. 11 (2011): 3001–8. http://dx.doi.org/10.1016/j.solmat.2011.06.012.

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Yamamoto, Michitaka, Takashi Matsumae, Yuichi Kurashima, et al. "Effect of Au Film Thickness and Surface Roughness on Room-Temperature Wafer Bonding and Wafer-Scale Vacuum Sealing by Au-Au Surface Activated Bonding." Micromachines 11, no. 5 (2020): 454. http://dx.doi.org/10.3390/mi11050454.

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Au-Au surface activated bonding (SAB) using ultrathin Au films is effective for room-temperature pressureless wafer bonding. This paper reports the effect of the film thickness (15–500 nm) and surface roughness (0.3–1.6 nm) on room-temperature pressureless wafer bonding and sealing. The root-mean-square surface roughness and grain size of sputtered Au thin films on Si and glass wafers increased with the film thickness. The bonded area was more than 85% of the total wafer area when the film thickness was 100 nm or less and decreased as the thickness increased. Room-temperature wafer-scale vacuu
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Rajbhandari, Santosh Man, and Bismita Pradhan. "Evaluation of Sealing Ability of Three Root-end Filling Materials." Orthodontic Journal of Nepal 5, no. 1 (2015): 27–30. http://dx.doi.org/10.3126/ojn.v5i1.14496.

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Introduction: Reinfection of root canal treated tooth leads to endodontic failure. In such case surgical endodontic therapy is the treatment of choice which provides obturation of radicular space with 3-dimensional sealing.Objective: To evaluate and compare the sealing ability of Mineral trioxide aggregate (MTA) with Glass ionomer cement (GIC) and Super EBA (Epoxybenzoic acid) root-end filling materials.Materials & Method: 94 extracted single rooted upper anterior teeth were selected for root canal preparation and obturation. Root were apically resected 3 mm; and 3 mm deep Class-I root-end
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W, Yongki Hadinata, and Karlina Samadi. "Nonsurgical Endodontik Retreatment of Maxillary First Premolar." DENTA 11, no. 1 (2017): 88. http://dx.doi.org/10.30649/denta.v11i1.133.

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<p><strong><em>Background :</em></strong><em> There are some factors can cause endodontic failure such as inadequate in cleaning or shaping step, non hermetic obturation, or poor restoration, which can cause bacteria multiply. <strong>Purpose :</strong> To report the management of endodontic failure with nonsurgical treatment. <strong>Case :</strong> 46-year-old woman came to Airlangga Dental Hospital Conservative Dentistry Department to treat her upper right tooth which show symptomatic pain in the last 2 weeks. The tooth has been tr
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Zhang, Dong, Xiao Dong Zhou, Lin Jun Wang, Qin Tong Zhao, and Tao Min Wei. "Experimental Study on the Multiple Energy Assisted Heat Pump." Advanced Materials Research 608-609 (December 2012): 969–73. http://dx.doi.org/10.4028/www.scientific.net/amr.608-609.969.

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A multiple energy assisted heat pump (MEAHP) system for radiant floor heating was proposed, which integrated a domestic air-assisted heat pump with a solar water heater. The system mainly employed a vacuum tube solar collector with a surface area of 7.44 m2, an electrical rotary-type hermetic compressor, two capillary tubes and three heat exchangers. All operation modes have functioned successfully in Lanzhou city, China. The experimental data of air-source heat pump (Mode 2) and double-source heat pump (Mode 3) have been discussed. The results show that the coefficient of performance (COP) of
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Malinowska, Joanna. "Change of students’ activities in the process of becoming a teacher." Andragoška spoznanja 23, no. 3 (2017): 89–103. http://dx.doi.org/10.4312/as.23.3.89-103.

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The article presents a part of research focused on teacher education in Poland. Becoming a teacher is a process that takes place in the space of universities and schools as educational entities in which two discursive communities meet. The distinctness and the hermetic character of the communities are an epistemological barrier to the creation of cooperation, which is essential for effective teacher education. The research is directly related to the need to introduce changes in this area and to define the conditions for these changes to occur. The purpose of the research is to establish how an
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Mekonen, Tigist Kefale, and Biruk Yazie Wubetie. "Determinants of the Use of Hermetic Storage Bags for Maize Storage among Smallholder Farmers in Northwest Ethiopia." Advances in Agriculture 2021 (September 10, 2021): 1–11. http://dx.doi.org/10.1155/2021/6644039.

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In Ethiopia, postharvest losses, mainly storage losses by insects, are very critical problems in agricultural production systems. In particular, maize is highly susceptible to insect and pest attacks in the storage. These storage losses affect the livelihood of small-scale farmers by aggravating their food insecurity and reducing their household income. This critical problem forced the farmers to look forward modern storage technologies like Purdue improved crop storage (PICS) bags, but its adoption is considerably low in the study area. Therefore, the objectives of this study were to examine
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Dissertations / Theses on the topic "Hermetic area"

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Sklenár, Ondrej. "Měření těsnosti hermetických prostor na JE." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229745.

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This diploma thesis deals with measuring the tightness of the hermetic area of nuclear power plant in the way of improving safety. Describes the layout and function of this area - the primary circuit of NPP with WWER 440/213 reactors, as well as methodology for leakage search and leakage calculation procedures. Personal contribution to the issue is a proposal improving tightness of the current state in hermetic area of NPP Jaslovské Bohunice – transition of jacketed pipe designed to collect water from the floor in the box of the steam generator to the heat exchanger of the shower system. This
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Memon, Saim. "Design, fabrication and performance analysis of vacuum glazing units fabricated with low and high temperature hermetic glass edge sealing materials." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/14562.

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Vacuum glazing is a vital development in the move to more energy efficient buildings. In vacuum glazing, an evacuated cavity supresses gaseous conduction and convection to provide high thermal resistance. A high vacuum pressure (less than 0.1 Pa) is required and must be maintained by a hermetic seal around the periphery, currently formed with either indium (i.e. low temperature sealing method) or solder glass (i.e. high temperature sealing method). This thesis reports the results of an experimental and theoretical investigation into the development of new low temperature (less than 200°C) and
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Books on the topic "Hermetic area"

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Davies, Benjamin K. Fantasy, Denial, and Virtual Reality in Mahler’s Fourth Symphony. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780199316090.003.0001.

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The Fourth Symphony has almost invariably been seen as innocent and optimistic: an evocation of past elegance and a vision of future happiness. In this context the literary and musical text of the last movement is seen to prompt ‘retrospective enlightenment’ in performance, causing us to reappraise our understanding of the first three movements. Yet the musical surface is not entirely placid and untroubled: even the exposition of the first movement is rife with discontinuities in texture, orchestration and thematic development. This chapter will suggest that the first movement of the Fourth mi
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Book chapters on the topic "Hermetic area"

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Hawkey, Kerensa, John Brameld, Tim Parr, Andrew Salter, and Heidi Hall. "Suitability of insects for animal feeding." In Insects as animal feed: novel ingredients for use in pet, aquaculture and livestock diets. CABI, 2021. http://dx.doi.org/10.1079/9781789245929.0004.

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Abstract This chapter explores the nutritional composition of insects and the potential benefits and drawbacks for their inclusion into pet, poultry, pig, ruminant and aquatic animal feeds. Six species are most commonly described for use in animal feed, namely black soldier fly (BSF; Hermetia illucens) larvae and prepupae, yellow mealworm (YM; Tenebrio molitor) larvae, superworm (SW; Zophobas morio) larvae, lesser mealworm (LM; Alphitobius diaperinus) larvae, house fly (HF; Musca domestica) larvae and house crickets (HC; Acheta domesticus). The nutritional composition, variability observed due to manipulation of feed source, age, developmental stage and suitability for inclusion into animal feed are compared.
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Swaminathan, Lakshmi. "RF MEMS Switch Fabrication and Packaging." In Nanofibers [Working Title]. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.95003.

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RF (Radio Frequency) MEMS (Micro Electro Mechanical Systems) technology is the application of micromachined mechanical structures, controlled by electrical signals and interacting with signals in the RF range. The applications of these devices range from switching networks for satellite communication systems to high performance resonators and tuners. RF MEMS switches are the first and foremost MEMS devices designed for RF technology. A specialized method for fabricating microsturctures called surface micromachining process is used for fabricating the RF MEMS switches. Die level packaging using available surface mount style RF packages. The packaging process involved the design of RF feed throughs on the Alumina substrates to the die attachment, wire bonding and hermetic sealing using low temperature processes.
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Cheshire, Paul. "Esoteric Romanticism." In William Gilbert and Esoteric Romanticism. Liverpool University Press, 2018. http://dx.doi.org/10.3828/liverpool/9781786941206.003.0010.

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This chapter views two particular forms of English Romanticism from the perspective of the history of esotericism, as defined by Antoine Faivre. First, Gilbert’s portrayal of Nature in his Bristol poems shows his receptivity to the ‘One Life’ vision propounded by the West Country Romantics. If, as this chapter argues, passages from poems such as ‘Tintern Abbey’ are records of visionary experience, their underlying philosophy belongs within the history of esotericism, which – according to Faivre – prioritises imagination as an ‘organ of the soul’. Second, Coleridge’s unpublished ‘compass of nature’ diagrams from 1814 onwards combine the traditional elements of Gilbert’s Hermetic diagrams with the newly discovered scientific elements carbon, hydrogen, oxygen and nitrogen. After Coleridge (and the German Nature philosophers who influenced him) the attempt to integrate scientific discoveries and esoteric wisdom has come to be viewed as a subcultural activity.
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Kahn, Andrew. "‘Verses on Russian Poetry’." In Mandelstam's Worlds. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198857938.003.0005.

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The chapter considers Mandelstam’s 1932 ‘Verses on Russian Poetry’ as an act of engagement with Soviet critical debates on poetry and ideology, and on the nature of the poetic canon. The cycle has been deemed to illustrate Mandelstam at his most hermetic and even backward-looking, read as poems that put up a verbal screen. In fact, it is highly topical and draws heavily on contemporary newspaper material about literary groups and reviews of his own work. A new, productive method of reading such difficult texts is proposed here by showing how closely the cycle assimilates its horizon of expectation, using the language of parable, allegory, visual emblem, and political quotation. Flowing out of the events described in Chapter 1, the cycle asks whether there are limits to the evolutionary model of survival of the fittest that operates in an age of class warfare, and whether in a poetic world that formerly cultivated dialogue the poet still has a place.
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Schettino, Patrizia. "Where Is Hanuman?" In Virtual and Augmented Reality in Education, Art, and Museums. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-1796-3.ch015.

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The chapter presents the interpretative strategies used by designers of an immersive environment on Hindu mythology and Hampi, an archaeological site in India, and their own knowledge of Hindu deities and their attributes. The process of animating an Indian Hindu deity for a potentially international audience means not only mastering 3D computer graphics and producing high-quality panorama of the sacred and historical place, but also working carefully on the interpretation and representation. The chapter uses concepts and theories from different disciplines (iconology, hermeutics, design research, museums studies, etc.) with the aim to describe, deconstruct, and understand the design choices. The study uses as main method the grounded theory: data are interviews and observations and the patterns emerging from qualitative data are compared with previous theories, during the process of theoretical comparison.
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Golubev, Alexey. "Techno-Utopian Visions of Soviet Intellectuals after Stalin." In The Things of Life. Cornell University Press, 2020. http://dx.doi.org/10.7591/cornell/9781501752889.003.0002.

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This chapter explores the link between material objects and the different temporalities of post-Stalinist Soviet society. The chapter looks at the productivist language of late socialism as a discursive framework that inspired and produced Soviet elemental materialism and was itself inspired and reproduced by it. Productivist language linked a vision of the grand Soviet future with technological objects and sought a rational social organization along industrial production and scientific progress. It abducted the imagery of Soviet factories, machines, vehicles, and space rockets, immersed it into the hermetic space of visual and textual representations, and used it to define, for the Soviet symbolic order, the position of the USSR at the cutting edge of technological progress. In this discourse, technologies and technological objects secured the possession of the present and future of human history for Soviet society, as well as ensured the superiority of the USSR in its competition with the Western bloc. The perceived might and transformative agency of Soviet technological objects made them affective for the Soviet public, and they became translated into distinctive discursive practices — vernaculars of the Soviet Techno-Utopianism — that sought to transform the Soviet material world but instead represented rigorous forms of self-making. In addition to affect and its politics, the chapter introduces several other key themes that are discussed in the following chapters, including the idea of making oneself by making things, which Soviet educators and ideologists understood in terms of the development of creativity, and the performativity of objects.
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Bortolani, Ljuba Merlina. "The Greek Magical Hymn to Hermes." In Tracking Hermes, Pursuing Mercury. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198777342.003.0018.

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This paper investigates the so-called “magical hymn” to Hermes, a short hexametrical invocation preserved in the corpus of the Greek magical papyri (PGM) in three different papyri of different dates: PGM V 401–20, VII 668–80, and XVIIb (fourth, third, and second/third centuries CE respectively). Some of the most interesting features are analyzed in the light of both Greek and Egyptian traditions in order to illuminate the cultural background of the divine persona described by the hymn. Though the composition appears to address a quite balanced syncretistic deity, a more thorough examination reveals that the nature of the god addressed, despite the Greek meter, is closer to Hermes’ Egyptian counterpart, Thoth. Nevertheless, the hymn does not have to be the product of philosophical Hermetism (as it has often been argued), but it could just represent an earlier stage of translation of the Egyptian conception into Greek.
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Pesic, Peter. "Mersenne’s Universal Harmony." In Music and the Making of Modern Science. The MIT Press, 2014. http://dx.doi.org/10.7551/mitpress/9780262027274.003.0008.

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Music was completely central for the natural philosophy of Mersenne. This chapter begins with his musical arguments for heliocentrism, against the hermetist Robert Fludd. Mersenne’s Harmonie Universelle shows the closest relation between practical music, its theory, and natural philosophy. In it, he was able to reach certain results well before Galileo Galilei. Mersenne presented musical devices to make pioneering measurements of the frequency of vibrating strings and of the speed of sound. His detailed treatment of the mechanics of falling bodies, inclined planes and pendulums supported and enabled his ensuing deductions about vibrating bodies, which extended Descartes’s work. Mersenne’s understanding of overtones both profited from and struggled with his musical preconceptions, as did his attempt to incorporate atomism into his account of vibrating bodies. Throughout the book where various sound examples are referenced, please see http://mitpress.mit.edu/musicandmodernscience (please note that the sound examples should be viewed in Chrome or Safari Web browsers).
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McNeece, Lucy Stone. "Abdelkébir Khatibi." In Abdelkébir Khatibi. Liverpool University Press, 2020. http://dx.doi.org/10.3828/liverpool/9781789622331.003.0012.

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Despite the considerable acclaim that Khatibi’s work has received, critics are frequently challenged to describe it. It is often considered « hybrid, » because it cannot be contained by the genres and categories of thought that we associate with Literature. I will argue that Khatibi’s work is less hybrid than « hermetic, » and that the difficulty felt in classifying or even analyzing his writing, is due to the presence of echoes and traces of archaic traditions. Khatibi devoted years of his life to studying other cultures as well as his own, finding that it was a rich fabric of varied influences, just as he found that other cultures bear material traces of many buried encounters. The influences present in Khatibi’s writing include Sufism, the traditions of Asia, such as the Tao and the Vedas, but also the esoteric sciences originating in Mesopotamia and Egypt that found their way to Greece, and which were revised and translated by Arabs and Eastern Christians. These entered into Europe from Andalusia and also through Italy, under the sponsorship of the Medicis, and contributed substantially to the revolution in the arts and sciences of the Renaissance. These cultures entertained a different relation to signs and images than that which has predominated since the Enlightenment in Europe. They also had a less binary and hierarchised conception of the world and man’s place in it. They imagined the universe as the space of a continuous transformation of diverse elements, a view opposed to that of the rational individual as master of his environment. Ostracized by the Church and the State, they remained in shadow, treated as heresies. I will try to show that many of the unorthodox traits of Khatibi’s thought and writing can be attributed to the influence of these archaic traditions, whose poetic and ethical values have much to teach us in the modern world.
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Burns, Dylan M. "Gnostic." In A Guide to Early Jewish Texts and Traditions in Christian Transmission. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190863074.003.0023.

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The corpus of extant Gnostic literature, preserved almost exclusively in Coptic codices of the ca. fourth–sixth centuries CE, constitutes an invaluable witness for the transmission of Second Temple Jewish traditions in late antiquity. The most famous of these concern the hypostasis Sophia (“Wisdom”) and the dual creation of Adam (Gen 2–3). Other important traditions found throughout Coptic Gnostic literature deal with Adam and Eve, Cain and Abel, divine “youths” (Metatron?), the Fall of the Watchers, Noah and the Flood, Seth’s sister and wife Norea and the Sibyl, Melchizedek, and Solomon. Sodom and Gomorrah pop up in famous cases of Gnostic “reverse exegesis,” where the Sodomites are valorized. Traditions of the apocalypses, such as heavenly journeys and the glorification and transformation of human seers, are also of paramount importance to Gnostic literature. More “philosophically-inclined” currents related to Gnosticism, such as Valentinianism and Hermetism, transmit many Jewish traditions as well. Gnostic literature thus constitutes a source of deep value not only for the importance of Jewish traditions for the formation of Christian and Gnostic thought, but also for the transmission of apocalyptic and mystical ideas during a period for which our “Jewish sources” are relatively scarce.
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Conference papers on the topic "Hermetic area"

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Choi, Won Kyoung, Moon Gi Cho, Sun Kyoung Seo, et al. "Hermetic Packaging of Micro Scanner for Laser Display Applications." In ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems collocated with the ASME 2005 Heat Transfer Summer Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/ipack2005-73252.

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Laser display technologies have been developed for an excellent expression of natural color, low power consumption and a long lifetime compared to other advanced displays, such as LCD, PDP and other projection type displays. The micro scanner is one of the key devices to make possible the raster scanning type laser projection displays. And the hermetic package of the micro scanner should be required for the protection from the environmental variations so as to keep the driving behavior uniform. Hermetic package can be ensured when the package is sealed hermetically without generating any outga
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Mariani, Viviana Cocco, and Alvaro Toubes Prata. "Computational Modelling of Fluid Flow in Radial Diffusers With Irregular Boundaries." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-15594.

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Radial diffusers are the basic geometry for the automatic valves in reciprocating hermetic compressors. In the present work numerical solutions for the laminar isocoric flow in radial diffusers are performed to investigate the influence of some geometry modifications on the mass flow, rate and on the resultant force on the valve. The numerical model was able to handle irregular geometries making use of a regular mesh, and was validated through comparisons with experiments. Results are presented in terms of the effective flow and force area of valves which are important efficiency parameters fo
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Huang, Annie T., Chung-Kuang Chou, and Chih Chen. "Self-Aligned Hermetic Packaging Using Eutectic SnPb Solder and Cr/Ni/Cu Metallization Layer." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61026.

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This paper reports an easy, low cost, and low temperature hermetic packaging technology utilizing eutectic SnPb solder and Cr/Ni/Cu bonding pad. We investigate the bonding results of silicon-silicon as well as silicon-glass and glass-glass bonding. Most hermetic packaging technologies require a bonding temperature higher than 300°C. Because some devices are sensitive to temperature that decreases their functionalities, two localized heating technology have been proposed. One technology generates heat via built-in-microheaters on the silicon substrate. Another localized heating technology utili
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Burke, Cillian, and Jeff Punch. "An Investigation of Capped Glass Frit Sealed MEMS Devices in Contemporary Accelerometers." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12135.

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Hermetic sealing is a stringent design constraint for contemporary MEMS devices such as accelerometers, gyroscopes, resonators, IR bolometers and RF devices. MEMS capping using glass frit seals is the most commonly used technique in practice. In this paper an investigation of glass frit sealed MEMS capping techniques in commercially-available inertial accelerometer sensors is reported. Destructive testing was the primary methodology used to characterize the accelerometer parts. X-ray analysis was used to identify the internal structure of the accelerometers. Microscopy and SEM analysis were th
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Kuznetsov, Yu N., B. A. Gabaraev, V. A. Reshetov, and V. A. Moskin. "Leasing of Nuclear Power Plants With Using Floating Technologies." In 10th International Conference on Nuclear Engineering. ASMEDC, 2002. http://dx.doi.org/10.1115/icone10-22186.

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The proposal to organize and realize the international program on leasing of Nuclear Power Plant (NPP) reactor compartments is brought to the notice of potential partners. The proposal is oriented to the construction of new NPPs or to replacement of worked-out reactor units of the NPPs in operation on the sites situated near water area and to the use of afloat technologies for construction, mounting and transportation of reactor units as a Reactor Compartment Block Module (RCBM). According to the offered project the RCBM is fabricated in factory conditions at the largest Russian defense shipbu
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Lee, James, and Tony Rogers. "Hermetic Packaging Technique Featuring Through-Wafer Interconnects and Low Temperature Direct Bond." In 2008 Second International Conference on Integration and Commercialization of Micro and Nanosystems. ASMEDC, 2008. http://dx.doi.org/10.1115/micronano2008-70288.

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A novel wafer level packaging method suitable for low production volumes, R&D, and multi-project wafers is presented, providing a hermetic seal suitable for vacuum encapsulation with wafers bonded at a low temperature. Hermetic through-wafer interconnects are bump bonded to a CMOS chip encapsulated by bonding a cap wafer after activating surfaces with free radicals, the Silicon-Silicon direct bond is then annealed to a high strength at 200°C to avoid chip damage. The application for which this system is proposed is an implantable multi-contact active nerve electrode for the treatment of ep
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Faheem, Faheem F., and Y. C. Lee. "Liquid Crystal Polymer for RF MEMS Packaging." In ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems collocated with the ASME 2005 Heat Transfer Summer Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/ipack2005-73442.

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We have developed a liquid crystal polymer (LCP) encapsulation technology for RF MEMS. The RF MEMS devices are flip-chip interconnected with other circuit elements on an alumina substrate. After flip-chip device transfer, LCP is used to encapsulate the device on the substrate. This approach is similar to glob-top encapsulation used for low-cost microelectronic packaging. The effectiveness of LCP (Vectra A950) sealing has been demonstrated by monitoring the moisture level inside the package under a 100% RH environment. In addition, the LCP’s permeabilities to helium and nitrogen were measured t
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Bhopte, Siddharth, Parthiban Arunasalam, Fadi Alsaleem, Arvind Rao, and Nataraj Hariharan. "Power Allocation Towards Hermetic Solder Joint Health of High Powered MEMS Chip for Harsh Environment Applications." In ASME 2011 Pacific Rim Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Systems. ASMEDC, 2011. http://dx.doi.org/10.1115/ipack2011-52296.

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Solders have been utilized extensively in the MEMS packaging industry to create vacuum or hermetic seals in a variety of applications. MEMS technology is finding applications in wide range of products like pressure sensors, actuators, flow control devices etc. For many harsh low temperature environment applications, like commercial refrigeration systems, MEMS based pressure sensors and flow actuators are directly mounted on to metal substrates using solders to create hermetic sealing. Solders attaching silicon devices directly to metal substrates may be subjected to very high thermal stresses
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Fasoro, Abiodun A., Praveen Pandojirao-S., Dan O. Popa, Harry E. Stephanou, and Dereje A. Agonafer. "Die and Wafer-Level Hermetic Sealing for MEMS Applications." In ASME 2007 InterPACK Conference collocated with the ASME/JSME 2007 Thermal Engineering Heat Transfer Summer Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/ipack2007-33850.

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Abstract:
Two of the primary causes of MEMS failure are stiction of the moving microparts due to moisture from environment and particulate contamination due to the degradation of organic materials. The use of getters such as sputtered Ti and Ba to maintain a moisture free environment within the MEMS package has been proposed and is well documented. Though getters ensure a moisture free environment within the package, they do not ensure hermeticity over long periods of time. Hermetic packaging is sometimes desirable for MEMS and optical MEMS (especially those that require long shelf lives) in order to gu
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10

Baughn, Terry V., and Shea Chen. "Low Cycle Fatigue in RF Microwave Module Housings." In ASME 2003 International Electronic Packaging Technical Conference and Exhibition. ASMEDC, 2003. http://dx.doi.org/10.1115/ipack2003-35263.

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Abstract:
Hermetic housings are required for the vast majority of electronics used in RF microwave electronics to protect the gallium arsenide and silicon devices from the environment. A common housing style includes a metal ring frame that is brazed onto a metal or ceramic base. The housing is populated with electronic devices and circuits and then hermetically sealed with a thin metal lid. For high volume manufacturing, lids are often attached by a resistance weld using a seam seal process. The interior hermitic volume is sealed at or near one atmosphere internal pressure. Since the housing may be sub
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