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Correlated microscopy of electronic and material properties of graphene grown on diamond thin films
Rezek, Bohuslav ; Čermák, Jan ; Varga, Marián ; Tulic, S. ; Skákalová, V. ; Waitz, T. ; Kromka, Alexander
In this work we compare growth of graphene on diamond thin films that enable large area processing. We use films with different crystal size and surface roughness to obtain deeper insight into formation and properties of GoD. The diamond films are coated by a nm thin sputtered Ni layer and heated to 900°C in a forming gas atmosphere (H2/Ar) to initiate catalytic thermal CVD process. The samples are cleaned from residual Ni after the growth process. We employ scanning electron microscopy, Raman micro-spectroscopy and Kelvin probe force microscopy to correlate material, structural, and electronic properties of graphene on diamond. We show how grain size and grain boundaries influence graphene growth and material and electronic properties. For instance we show that the grain boundaries (with non-diamond carbon phases) in diamond films have an important role. They influence the electronic properties and they are beneficial for forming graphene on diamond higher quality.
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The deposition of germanium nanoparticles on hydrogenated amorphous silicon
Stuchlík, Jiří ; Volodin, V.A. ; Shklyaev, A.A. ; Stuchlíková, The-Ha ; Ledinský, Martin ; Čermák, Jan ; Kupčík, Jaroslav ; Fajgar, Radek ; Mortet, Vincent ; More Chevalier, Joris ; Ashcheulov, Petr ; Purkrt, Adam ; Remeš, Zdeněk
We reveal the mechanism of Ge nanoparticles (NPs) formation on the surface of the hydrogenated amorphous silicon (a-Si:H) deposited by Plasma Enhanced Chemical Vapor Deposition (PECVD) on ITO and a on boron doped nanocrystalline diamond (BDD). The coating of Ge NPs on a-Si:H was performed by molecular beam epitaxy (MBE) at temperatures up to 450 °C. The Ge NPs were characterized by Raman spectroscopy, scanning electron microscopy (SEM) and high resolution transmission electron microscopy (HRTEM). The nanocrystalline Ge particles are conglomerates of nanocrystals of size 10-15 nm and quantum dots (QDs) with size below 2 nm embedded in amorphous Ge phase. After coating with Ge NPs the a-Si:H thin films show better adhesion on BDD substrates then on ITO substrates.
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Old English nominal suffixes -el, -els, -incel: a survey in diachrony
Bočková, Renata ; Čermák, Jan (advisor) ; Tichý, Ondřej (referee)
The aim of this paper is to provide detailed characterizations of three Old English nominal suffixes, -el, -els, and -incel, none of which survived to Middle English. Each of the suffixes is given a detailed description of the grammatical and semantic properties of its bases and derivatives, its productivity in Old English, a diachronic overview of the development of the suffix from Proto-Germanic to Early Middle English, including its cognates in other Germanic languages, and presumed causes of its early disappearance. Attention is also paid to the typological framework of the history of English and its effect on the productivity of the suffixes.
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Corpus based analysis of the competition of linguistic expressions of Old Norse and Old English origin in the Late Old English and Middle English periods
Schlindenbuchová, Magdalena ; Tichý, Ondřej (advisor) ; Čermák, Jan (referee)
This paper seeks to illustrate the influence of Old Norse on the English lexicon. The theoretical part deals mainly with the socio-historical background and with the invasions of the Old Norse speakers, which brought about the changes in the English language. Furthermore, it discusses the idea of mutual intelligibility of the two languages concerned and it describes the characteristics of the language contact situation, which lasted for about 200 years, during which speakers of Old Norse invaded the British Isles. The aim then is to relate these events and factors to the linguistic changes in historical English caused by the influence of Old Norse. The changes shall be illustrated on the competition of concrete linguistic expressions of Old Norse origin and Old English origin. The research itself focuses on the examination of the competition during the periods of Late Old English and Middle English, and it is carried out in the Old English and Middle English corpora (YCOE, PPCME2). The analysis comprises four words of Old Norse origin and their four Old English equivalents. Key words: historical linguistics, borrowing, language contact, corpus linguistics, Old English, Middle English, Old Norse
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Spelling pronunciation in Early Modern and Present-Day English
Fojtík, David ; Čermák, Jan (advisor) ; Popelíková, Jiřina (referee)
This paper deals with spelling pronunciation, a term coined by Emil Koeppel in 1901. Scholarly discussions provide several implications. Firstly, it is the relationship between phonemes and their graphic representation. In English, the phoneme-grapheme relations are in disbalance. This applies especially to vowels but also to several consonants, where digraphs, for example, are mostly ambiguous and very dependent on surroundings. A typical example of the poor grapheme-phoneme relations is represented by <ch>, which can be either [ʃ], or [tʃ], or even [k]. At the same time, spelling pronunciation is also regarded as a process of language change and it is believed that spelling pronunciation is also governed by analogy. It is generally believed by scholars that spelling pronunciation is more likely to occur in unusual structures or in words which have weaker 'oral tradition'. From the historical perspective, spelling pronunciation is very related to etymological respellings. One of the main premises is that spelling pronunciation is rooted in the notion that pronunciation should reflect spelling, which was most likely introduced and induced by 18th century orthoepists and standardisation of English spelling. Although much has been written about spelling pronunciation and its relations, no paper so...
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Grammaticalisation of the adjective "like": processes and boundaries
Valentínyová, Kristína ; Čermák, Jan (advisor) ; Popelíková, Jiřina (referee)
4 ABSTRACT This thesis provides a description of the incipient grammaticalization of like between the end of the Old English period and the beginning of the Middle English period. During the examined time period, like was gradually losing the attributes that defined its categorial status as an adjective and began to function as the head of a prepositional phrase. Since the process of grammaticalization is inherently gradual, both the adjectival and the prepositional like were found to coexist as a result of the process of layering. Therefore, 10 parameters were established to determine which instances of like were more adjective-like and which were more preposition- like. The empirical part is based on the analysis of the 371 instances of the OE variants of like found in The York-Toronto-Helsinki Parsed Corpus of Old English Prose (YCOE) and the 232 instances of the ME variants of like found in The Penn-Helsinki Parsed Corpus of Middle English, second edition (PPCME2). The sample is examined from the morphological as well as the syntactic point of view. Compared to the YCOE corpus, the findings in the PPCME2 corpus revealed a more advanced stage of grammaticalization. While some of the changes are not specific to like and affected other adjectives as well (the loss of inflectional endings, the fixed...
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Ancrene Wisse, Guide for Anchoresses, A Czech translation.
Petříková, Klára ; Čermák, Jan (advisor) ; Franková, Milada (referee) ; Malura, Jan (referee)
Abstract, Ancrene Wisse, "Guide for Anchoresses" A Czech Translation (2015) Klára Petříková Ancrene Wisse (Guide for Anchoresses) is a remarkable work of the Middle English literature dating back to the first half of the 13th century. Its author (presumably a Dominican) conceived it as "spiritual life guidelines" for three sisters of a noble origin who decided to renounce the world. Besides its didactic purpose, its character is meditative and contemplative. Riveting in its style, its rich metaphors and heightened sensibility link it with the later tradition of the English mystical writers (Julian of Norwich), The work abounds in quotations, paraphrases of the continental monastic authors (St. Augustine, Bernard of Clairvaux). Surviving in seventeen manuscripts, it had been quoted till the Renaissance and its importance is further confirmed by a contemporaneous translation into Latin and French. Present translation aims to introduce this work to the Czech readers and to put it in its historical, social and literary context.
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