지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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We discuss the experimental procedure for extracting reliable phase information from a defocus series of transmission electron microscopy (TEM) dark-field images using the transport of intensity equation (TIE). Taking InGaN/GaN multi-quantum well light-emitting diode as a model system, various factors affecting the final result of reconstructed phase such as TEM sample preparation, TEM imaging condition, image alignment, the correction of defocus values and the use of high frequency pass filter are evaluated. The obtained phase of wave function was converted to the geometric phase of the corresponding lattice planes,which was then used for the two-dimensional mapping of lattice strain following the dark-field inline holography (DIH) routine.
The strain map obtained by DIH after optimized image processing is compared with that obtained by the geometric phase analysis of high resolution TEM (HRTEM) image, manifesting that DIH yields more accurate and reliable strain information than HRTEM-based GPA.
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참고문헌 (17)
참고문헌 신청
Allen LJ / 2004 / Exit wave reconstruction at atomic resolution / Ultramicroscopy 100 : 91 ~ 104
Allen LJ / 2006 / Electron microscope Cs correction using iterative wave-function reconstruction / Microscopy and Analysis 52 : 5 ~ 7
Carbone L / 2007 / Synthesis and micrometer-scale assembly of colloidal CdSe/ CdS nanorods prepared by a seeded growth approach / Nano Letter 7 : 2942 ~ 2950
Chang LY / 2006 / Comparisons of linear and nonlinear image restoration / Microsc Microanal 12 : 469 ~ 475
Coene WMJ / 1992 / Phase retrieval through focus variation for ultra-resolution in field emission transmission microscopy / Phys Rev Lett 69 : 3743 ~ 3746
Allen LJ / 2006 / Electron microscope Cs correction using iterative wave-function reconstruction / Microscopy and Analysis 52 : 5 ~ 7
Carbone L / 2007 / Synthesis and micrometer-scale assembly of colloidal CdSe/ CdS nanorods prepared by a seeded growth approach / Nano Letter 7 : 2942 ~ 2950
Chang LY / 2006 / Comparisons of linear and nonlinear image restoration / Microsc Microanal 12 : 469 ~ 475
Coene WMJ / 1992 / Phase retrieval through focus variation for ultra-resolution in field emission transmission microscopy / Phys Rev Lett 69 : 3743 ~ 3746
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