A new thermal ring-opening polymerization technique for 1, 1, 3, 3-tetra-ph enyl-1, 3-disilacyclobutane (TPDC) based on the use of metal nanoparticles produced by pulsed laser ablation was investigated. This method ...A new thermal ring-opening polymerization technique for 1, 1, 3, 3-tetra-ph enyl-1, 3-disilacyclobutane (TPDC) based on the use of metal nanoparticles produced by pulsed laser ablation was investigated. This method facilitates the synthesis of polydiphenysilylenemethyle (PDPhSM) thin film, which is difficult to make by conventional methods because of its insolubility and high melting point. TPDC was first evaporated on silicon substrates and then exposed to metal nanoparticles deposition by pulsed laser ablation prior to heat treatment.The TPDC films with metal nanoparticles were heated in an electric furnace in air atmosphere to induce ring-opening polymerization of TPDC. The film thicknesses before and after polymerization were measured by a stylus profilometer. Since the polymerization process competes with re-evaporation of TPDC during the heating, the thickness ratio of the polymer to the monomer was defined as the polymerization efficiency, which depends greatly on the technology conditions. Therefore, a well trained radial base function neural network model was constructed to approach the complex nonlinear relationship. Moreover, a particle swarm algorithm was firstly introduced to search for an optimum technology directly from RBF neural network model. This ensures that the fabrication of thin film with appropriate properties using pulsed laser ablation requires no in-depth understanding of the entire behavior of the technology conditions.展开更多
With the increasingly frequent economic and political exchanges and close ties between countries in the world, the cul-tural carriers represented by film works have become an important form of communication between co...With the increasingly frequent economic and political exchanges and close ties between countries in the world, the cul-tural carriers represented by film works have become an important form of communication between countries. In this context, moreand more attention has been paid to the translation of film works, and practitioners in this field also want to bring more smooth anddeep viewing experience to other audiences. Starting from the difference between Chinese translation and English translation, thispaper explores the specific elements of cultural differences and the reasons for this phenomenon, hoping to contribute to a compre-hensive and in-depth exchange of world culture.展开更多
Nowadays,with the rapid development of economy and technology,Chinese film&television industry has made great advancement,owning a prosperous domestic market and gaining a lot of profits.However,the overseas marke...Nowadays,with the rapid development of economy and technology,Chinese film&television industry has made great advancement,owning a prosperous domestic market and gaining a lot of profits.However,the overseas market of Chinese film&television works is still lagging behind.As the economic globalization has fastened the free trade in the world,its international distribution is important for it could represent Chinese cultural values and help to spread Chinese"soft power".Therefore,some strategies would be proposed in the essay,in order to solve the existing problems in the international distribution of Chinese film&television works,such as box-office deficits,cultural discounts and trade barriers,etc.展开更多
The effects of working pressure on the component, surface morphology, surface roughness, and deposition rate of glow discharge polymer (GDP) films by a trans-2-butene/hydrogen gas mixture were investigated based on ...The effects of working pressure on the component, surface morphology, surface roughness, and deposition rate of glow discharge polymer (GDP) films by a trans-2-butene/hydrogen gas mixture were investigated based on plasma characteristics diagnosis. The composition and ion energy distributions of a multi-carbon (CaHs/H2) plasma mixture at different working pressures were diagnosed by an energy-resolved mass spectrometer (MS) during the GDP film deposition process. The Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscope (SEM) and white-fight interferometer (WLI) results were obtained to investigate the structure, morphology and roughness characterization of the deposited films, respectively. It was found that the degree of ionization of the C4H8/H2 plasma reduces with an increase in the working pressure. At a low working pressure, the C-H fragments exhibited small-mass and high ion energy in plasma. In this case, the film had a low CH3/CH2 ratio, and displayed a smooth surface without any holes, cracks or asperities. While the working pressure increased to 15 Pa, the largest number of large-mass fragments led to the deposition rate reaching a maximum of 2.11 #m h-1, and to hole defects on the film surface. However, continuing to increase the working pressure, the film surface became smooth again, and the interface between clusters became inconspicuous without etching pits.展开更多
Al and Mn co-doped-ZnO films have been prepared at room temperature by DC reacti ve magnetron sputtering technique. The optical absorption coefficient, apparent and fundamental band gap, and work function of the films...Al and Mn co-doped-ZnO films have been prepared at room temperature by DC reacti ve magnetron sputtering technique. The optical absorption coefficient, apparent and fundamental band gap, and work function of the films have been investigated using optical spectroscopy, band structure analyses and ultraviolet photoelectro n spectroscopy (UPS). ZnO films have direct allowed transition band structure, w hich has been confirmed by the character of the optical absorption coefficient. The apparent band gap has been found directly proportional to N2/3, showing that the effect of Burstein-Moss shift on the band gap variations dominates over the many-body effect. With only standard cleaning protocols, the work function of ZnO: (Al, Mn) and ZnO: Al films have been measured to be 4.26 and 4.21eV, respec tively. The incorporation of Mn element into the matrix of ZnO, as a relatively deep donor, can remove some electrons from the conduction band and deplete the d ensity of occupied states at the Fermi energy, which causes a loss in measured p hotoemission intensity and an increase in the surface work function. Based on th e band gap and work function results, the energy band diagram of the ZnO: (Al, M n) film near its surface is also given.展开更多
An increase of work function (0.3 eV) is achieved by irradiating poly(3,4-ethylenedioxythiophene):poly(styrene sul- fonate) (PEDOT:PSS) film in vacuum with 254-nm ultraviolet (UV) light. The mechanism for ...An increase of work function (0.3 eV) is achieved by irradiating poly(3,4-ethylenedioxythiophene):poly(styrene sul- fonate) (PEDOT:PSS) film in vacuum with 254-nm ultraviolet (UV) light. The mechanism for such an improvement is investigated by photoelectron yield spectroscopy, X-ray photo electron energy spectrum, and field emission technique. Sur- face oxidation and composition change are found as the reasons for work function increase. The UV-treated PEDOT:PSS film is used as the hole injection layer in a hole-only device. Hole injection is improved by UV-treated PEDOT:PSS film without baring the enlargement of film resistance. Our result demonstrates that UV treatment is more suitable for modifying the injection barrier than UV ozone exposure.展开更多
Ferroelectric materials have many interesting physical properties such as ferroelectricity, pyroelectricity, piezoelectricity, and opto-electricity, and applying ferroelectric materials in the forms of thin and thick ...Ferroelectric materials have many interesting physical properties such as ferroelectricity, pyroelectricity, piezoelectricity, and opto-electricity, and applying ferroelectric materials in the forms of thin and thick films and integrating them on the silicon substrate as electronic and MEMS devices is a very attractive research area and challenging. In this paper, we report our research works on ferroelectric MEMS and ferroelectric films for electronic device applications. Pyroelectric thin film infrared sensors have been made, characterized, and a 32×32 array with its size of 1cm×1cm has been obtained on Si membrane. Ferroelectric thin films in amorphous phase have been applied to make silicon based hydrogen gas sensors with the metal/amorphous ferroelectric film/metal device structure, and its turn-on voltage of about 4.5V at ~1000 ppm in air is about 7 times of the best value reported in the literature. For the application of electron emission flat panel display, ferroelectric BST thin films with excess Ti concentrations have been coated on Si tips, the threshold voltage of those ferroelectric film coated tips has been reduced about one order from ~70 V/μm to 4~10 V/μm for different Ti concentrations, and however, the electron emission current density has been increased at least 3~4 order for those coated tips compared to that of the bare Si tips. To fulfill in the thickness gap between thin film of typical ~1 μm made by PVD/CVD and polished ceramic wafer of ~50 μm from the bulk, piezoelectric films with thickness in a range of 1~30 μm have been successfully deposited on Si substrate at a low temperature of 650oC by a novel hybridized deposition technique, and piezoelectric MEMS ultrasonic arrays have been very recently obtained with the sound pressure level up to ~120 dB. More detailed results will be presented and mechanisms will be discussed.展开更多
Ever since Lawrence Goodwyn published The Populist Moment, social historians have been keenly aware of the power culture represents when it comes to resistance. Historically, "movement culture" has been used to crea...Ever since Lawrence Goodwyn published The Populist Moment, social historians have been keenly aware of the power culture represents when it comes to resistance. Historically, "movement culture" has been used to create a collective climate and offered political activists a springboard to discuss with the masses the benefits of joining a social movement. "Beyond the Dreams of Loveliness" uses the cultural outlet of film and the labor movement in the city of Detroit as analytical tools to examine working class community resistance throughout the 1930s. In the midst of the "golden age of film" community activists and union organizers--some of whom were well-known radicals and some of whom were mainstream unionists--used the institution of cinema to instill a level of class consciousness in the masses and mobilize the working class community against exploitation of employers, reactionary politicians, and white supremacist organizations. Movie-going had been a very popular form of recreation in Detroit since the 1920s and downtown theatres increasingly became the destination of an eclectic array of workers. Movie theaters themselves were bastions of community activity around the thirties and many were located in the heart of the city's working class district. Yet it was the films themselves that offered community activists and unionists a chance to converse with workers regarding the socio-economic matters of the day. Hollywood released a good number of films that dealt with working class issues and provided activists with ample opportunities to "instruct" the audience and carry on the discussion into the factory or union halls. "Beyond the Dreams of Loveliness" relies on a combination of oral histories, movie reviews, film clips, and union and/or working class organizational records to illuminate how activists in Detroit's working class community used film as an outlet to inspire working class resistance. In sum, film provided an accessible form of entertainment that proved to be effective on two fronts: It promoted increased group cooperation, friendship, and alliances while it also fostered a shared culture, making it easier for activists to organize workers in the coming struggles for unionism.展开更多
This is a study of the feasibility and effects of teaching listening with films and TV programs. The research is a part of the English Learning Program directed by ZHANG Zhen, which is sponsored by Academic Affairs Of...This is a study of the feasibility and effects of teaching listening with films and TV programs. The research is a part of the English Learning Program directed by ZHANG Zhen, which is sponsored by Academic Affairs Office of Leshan Normal University. The researcher of the program sought for theretical bases from Krashen's Input Hypothesis, the Motivation Theory, the Context Theory, and the Communicative Language Teaching Theory. Then the author introduced a pilot study conducted by utilizing films or TV programs to teach listening from September 2010 till now. The statistic results from the experiment suggest that there is indeed some correlations between teaching listening with films or TV programs and a learner's listening comprehension in general in language achievement tests at certain stages. The scores of the students from the experimental group are improved after two years of teaching with the new methods. Analyses and discussions have been done based on a questionnaire and an interview. The results showed that both the teachers and the students had positive attitudes towards teaching listening with films or TV programs. Most of them view this method as an effective way in ELT (English language teaching), because it provides more opportunities for contextual practice, lower their anxiety; it can also help to motivate them, stimulate their active participation and increase their activities as well. Therefore, this method can be used to cultivate students' communicative competence. Consequently, we can draw the conclusion that this method has some advantages over teaching listening with the pre-taped materials in New College English. It may play an important role in ELT, especially in listening teaching. Based on the statistic analyses and the survey, some activities and techniques are provided for the teacher on how to teach listening with films or TV programs. The roles that an English teacher plays in this method are illustrated at the end of the thesis.展开更多
Based on the related theories of intercultural competence and extensive analysis of literature,this paper employed questionnaires and interviews to do a research with 200 non-English college students about the general...Based on the related theories of intercultural competence and extensive analysis of literature,this paper employed questionnaires and interviews to do a research with 200 non-English college students about the general situation of their intercultural competence and the impact on it caused by English films and TV series in Wuhan University of Technology.The findings of the study indicate that non-English college students have relatively good intercultural competence while the deficiency of intercultural knowledge and skill exists;the appreciation of English films and TV series is positively correlated with the four dimensions of non-English college students’intercultural competence,namely intercultural knowledge,attitude,skill and awareness.Based on these findings of the research,the author brings up some specific and constructive suggestions on improving non-English college students’intercultural competence with the help of English films and TV series for college English teachers and non-English college students.展开更多
基金Funded by the Zhejiang Provincial Natural Science Foundation of China(No.R405031)Jiaxing Science Planning Project(2009 2007)the Educa-tion Department of Zhejiang Province (No.20051441)
文摘A new thermal ring-opening polymerization technique for 1, 1, 3, 3-tetra-ph enyl-1, 3-disilacyclobutane (TPDC) based on the use of metal nanoparticles produced by pulsed laser ablation was investigated. This method facilitates the synthesis of polydiphenysilylenemethyle (PDPhSM) thin film, which is difficult to make by conventional methods because of its insolubility and high melting point. TPDC was first evaporated on silicon substrates and then exposed to metal nanoparticles deposition by pulsed laser ablation prior to heat treatment.The TPDC films with metal nanoparticles were heated in an electric furnace in air atmosphere to induce ring-opening polymerization of TPDC. The film thicknesses before and after polymerization were measured by a stylus profilometer. Since the polymerization process competes with re-evaporation of TPDC during the heating, the thickness ratio of the polymer to the monomer was defined as the polymerization efficiency, which depends greatly on the technology conditions. Therefore, a well trained radial base function neural network model was constructed to approach the complex nonlinear relationship. Moreover, a particle swarm algorithm was firstly introduced to search for an optimum technology directly from RBF neural network model. This ensures that the fabrication of thin film with appropriate properties using pulsed laser ablation requires no in-depth understanding of the entire behavior of the technology conditions.
文摘With the increasingly frequent economic and political exchanges and close ties between countries in the world, the cul-tural carriers represented by film works have become an important form of communication between countries. In this context, moreand more attention has been paid to the translation of film works, and practitioners in this field also want to bring more smooth anddeep viewing experience to other audiences. Starting from the difference between Chinese translation and English translation, thispaper explores the specific elements of cultural differences and the reasons for this phenomenon, hoping to contribute to a compre-hensive and in-depth exchange of world culture.
文摘Nowadays,with the rapid development of economy and technology,Chinese film&television industry has made great advancement,owning a prosperous domestic market and gaining a lot of profits.However,the overseas market of Chinese film&television works is still lagging behind.As the economic globalization has fastened the free trade in the world,its international distribution is important for it could represent Chinese cultural values and help to spread Chinese"soft power".Therefore,some strategies would be proposed in the essay,in order to solve the existing problems in the international distribution of Chinese film&television works,such as box-office deficits,cultural discounts and trade barriers,etc.
基金financially supported by National Natural Science Foundation of China (No. 51401194)
文摘The effects of working pressure on the component, surface morphology, surface roughness, and deposition rate of glow discharge polymer (GDP) films by a trans-2-butene/hydrogen gas mixture were investigated based on plasma characteristics diagnosis. The composition and ion energy distributions of a multi-carbon (CaHs/H2) plasma mixture at different working pressures were diagnosed by an energy-resolved mass spectrometer (MS) during the GDP film deposition process. The Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscope (SEM) and white-fight interferometer (WLI) results were obtained to investigate the structure, morphology and roughness characterization of the deposited films, respectively. It was found that the degree of ionization of the C4H8/H2 plasma reduces with an increase in the working pressure. At a low working pressure, the C-H fragments exhibited small-mass and high ion energy in plasma. In this case, the film had a low CH3/CH2 ratio, and displayed a smooth surface without any holes, cracks or asperities. While the working pressure increased to 15 Pa, the largest number of large-mass fragments led to the deposition rate reaching a maximum of 2.11 #m h-1, and to hole defects on the film surface. However, continuing to increase the working pressure, the film surface became smooth again, and the interface between clusters became inconspicuous without etching pits.
基金This work was supported by the National Nalural Science Foundation of China(No.50172051).
文摘Al and Mn co-doped-ZnO films have been prepared at room temperature by DC reacti ve magnetron sputtering technique. The optical absorption coefficient, apparent and fundamental band gap, and work function of the films have been investigated using optical spectroscopy, band structure analyses and ultraviolet photoelectro n spectroscopy (UPS). ZnO films have direct allowed transition band structure, w hich has been confirmed by the character of the optical absorption coefficient. The apparent band gap has been found directly proportional to N2/3, showing that the effect of Burstein-Moss shift on the band gap variations dominates over the many-body effect. With only standard cleaning protocols, the work function of ZnO: (Al, Mn) and ZnO: Al films have been measured to be 4.26 and 4.21eV, respec tively. The incorporation of Mn element into the matrix of ZnO, as a relatively deep donor, can remove some electrons from the conduction band and deplete the d ensity of occupied states at the Fermi energy, which causes a loss in measured p hotoemission intensity and an increase in the surface work function. Based on th e band gap and work function results, the energy band diagram of the ZnO: (Al, M n) film near its surface is also given.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.61076057,61376059,61171023,and 91221202,)the National Basic Research Program of China(Grant Nos.2012CB932701 and 2011CB933001)
文摘An increase of work function (0.3 eV) is achieved by irradiating poly(3,4-ethylenedioxythiophene):poly(styrene sul- fonate) (PEDOT:PSS) film in vacuum with 254-nm ultraviolet (UV) light. The mechanism for such an improvement is investigated by photoelectron yield spectroscopy, X-ray photo electron energy spectrum, and field emission technique. Sur- face oxidation and composition change are found as the reasons for work function increase. The UV-treated PEDOT:PSS film is used as the hole injection layer in a hole-only device. Hole injection is improved by UV-treated PEDOT:PSS film without baring the enlargement of film resistance. Our result demonstrates that UV treatment is more suitable for modifying the injection barrier than UV ozone exposure.
文摘Ferroelectric materials have many interesting physical properties such as ferroelectricity, pyroelectricity, piezoelectricity, and opto-electricity, and applying ferroelectric materials in the forms of thin and thick films and integrating them on the silicon substrate as electronic and MEMS devices is a very attractive research area and challenging. In this paper, we report our research works on ferroelectric MEMS and ferroelectric films for electronic device applications. Pyroelectric thin film infrared sensors have been made, characterized, and a 32×32 array with its size of 1cm×1cm has been obtained on Si membrane. Ferroelectric thin films in amorphous phase have been applied to make silicon based hydrogen gas sensors with the metal/amorphous ferroelectric film/metal device structure, and its turn-on voltage of about 4.5V at ~1000 ppm in air is about 7 times of the best value reported in the literature. For the application of electron emission flat panel display, ferroelectric BST thin films with excess Ti concentrations have been coated on Si tips, the threshold voltage of those ferroelectric film coated tips has been reduced about one order from ~70 V/μm to 4~10 V/μm for different Ti concentrations, and however, the electron emission current density has been increased at least 3~4 order for those coated tips compared to that of the bare Si tips. To fulfill in the thickness gap between thin film of typical ~1 μm made by PVD/CVD and polished ceramic wafer of ~50 μm from the bulk, piezoelectric films with thickness in a range of 1~30 μm have been successfully deposited on Si substrate at a low temperature of 650oC by a novel hybridized deposition technique, and piezoelectric MEMS ultrasonic arrays have been very recently obtained with the sound pressure level up to ~120 dB. More detailed results will be presented and mechanisms will be discussed.
文摘Ever since Lawrence Goodwyn published The Populist Moment, social historians have been keenly aware of the power culture represents when it comes to resistance. Historically, "movement culture" has been used to create a collective climate and offered political activists a springboard to discuss with the masses the benefits of joining a social movement. "Beyond the Dreams of Loveliness" uses the cultural outlet of film and the labor movement in the city of Detroit as analytical tools to examine working class community resistance throughout the 1930s. In the midst of the "golden age of film" community activists and union organizers--some of whom were well-known radicals and some of whom were mainstream unionists--used the institution of cinema to instill a level of class consciousness in the masses and mobilize the working class community against exploitation of employers, reactionary politicians, and white supremacist organizations. Movie-going had been a very popular form of recreation in Detroit since the 1920s and downtown theatres increasingly became the destination of an eclectic array of workers. Movie theaters themselves were bastions of community activity around the thirties and many were located in the heart of the city's working class district. Yet it was the films themselves that offered community activists and unionists a chance to converse with workers regarding the socio-economic matters of the day. Hollywood released a good number of films that dealt with working class issues and provided activists with ample opportunities to "instruct" the audience and carry on the discussion into the factory or union halls. "Beyond the Dreams of Loveliness" relies on a combination of oral histories, movie reviews, film clips, and union and/or working class organizational records to illuminate how activists in Detroit's working class community used film as an outlet to inspire working class resistance. In sum, film provided an accessible form of entertainment that proved to be effective on two fronts: It promoted increased group cooperation, friendship, and alliances while it also fostered a shared culture, making it easier for activists to organize workers in the coming struggles for unionism.
文摘This is a study of the feasibility and effects of teaching listening with films and TV programs. The research is a part of the English Learning Program directed by ZHANG Zhen, which is sponsored by Academic Affairs Office of Leshan Normal University. The researcher of the program sought for theretical bases from Krashen's Input Hypothesis, the Motivation Theory, the Context Theory, and the Communicative Language Teaching Theory. Then the author introduced a pilot study conducted by utilizing films or TV programs to teach listening from September 2010 till now. The statistic results from the experiment suggest that there is indeed some correlations between teaching listening with films or TV programs and a learner's listening comprehension in general in language achievement tests at certain stages. The scores of the students from the experimental group are improved after two years of teaching with the new methods. Analyses and discussions have been done based on a questionnaire and an interview. The results showed that both the teachers and the students had positive attitudes towards teaching listening with films or TV programs. Most of them view this method as an effective way in ELT (English language teaching), because it provides more opportunities for contextual practice, lower their anxiety; it can also help to motivate them, stimulate their active participation and increase their activities as well. Therefore, this method can be used to cultivate students' communicative competence. Consequently, we can draw the conclusion that this method has some advantages over teaching listening with the pre-taped materials in New College English. It may play an important role in ELT, especially in listening teaching. Based on the statistic analyses and the survey, some activities and techniques are provided for the teacher on how to teach listening with films or TV programs. The roles that an English teacher plays in this method are illustrated at the end of the thesis.
基金“the National Social Science Fund of China”(Grant Number:17BYY098).
文摘Based on the related theories of intercultural competence and extensive analysis of literature,this paper employed questionnaires and interviews to do a research with 200 non-English college students about the general situation of their intercultural competence and the impact on it caused by English films and TV series in Wuhan University of Technology.The findings of the study indicate that non-English college students have relatively good intercultural competence while the deficiency of intercultural knowledge and skill exists;the appreciation of English films and TV series is positively correlated with the four dimensions of non-English college students’intercultural competence,namely intercultural knowledge,attitude,skill and awareness.Based on these findings of the research,the author brings up some specific and constructive suggestions on improving non-English college students’intercultural competence with the help of English films and TV series for college English teachers and non-English college students.