Spectrometer attachments for the scanning electron microscope
Spectrometer attachments for the scanning electron microscope
... .130 Abstract This thesis describes the development of some new add-on spectrometer attachments for the Scanning Electron Microscope (SEMs) The first spectrometer uses a magnetic sector ... the performance of the spectrometer [2.22] In their setup, the primary electron beam was scanned about the object point, generating different entrance angles into the spe...
Ngày tải lên: 11/09/2015, 09:07
lectron energy spectrometers for the scanning electron microscope
... naturally raises the question of whether the electron energy analyzers used for the SAM can be incorporated into the SEM? The two most commonly used electron energy analyzers for the SAM are the Cylindrical ... develop electron energy spectrometers for the Scanning Electron Microscope (SEM), in order to make it a more powerful instrument for nano-sc...
Ngày tải lên: 10/09/2015, 15:53
ĐỀ TÀI KÍNH HIỂN VI ĐƯỜNG HẦM QUÉT STM ( The Scanning Tunneling Microscope )
... = ) e −α z Nghiệm phương trình: α2 = Trong đó: 2m ( V0 − E ) h2 Ψ ( z ) = Ψ ( ) e −2α z 2 Khi z = d Ψ ( z = d ) = Ψ ( ) e −2α d 2 I = f ( E ). e EF −2 kd I = ∑ EF − e∆V Ψ ( ) e ... đường hầm lượng tử: 2.2 Ngun lý hoạt động 3.CẤU TẠO CỦA STM 3.1 Đầu dò (tip) 3.2 Chống rung 3.3Hệ điều khiển truy hồi 3.4 Bộ áp điện...
Ngày tải lên: 27/05/2015, 22:48
GIÁO TRÌNH KÍNH HIỂN VI ĐIỆN TỬ QUÉT (Scanning Electron Microscope)
... tử Auger, điện tử tán xạ ngược Tinh thể học Điện tử tán xạ ngược, điện tử truyền qua, điện tử thứ cấp tia X Liên kết hóa học Điện tử Auger, tia X Tính chất điện từ Điện tử thứ cấp suất điện động ... Anh) phát triển kính hiển vi điện tử quét mô hình công bố luận án tiến sĩ D McMullan với chùm điện tử hẹp có độ phân giải đến 500 Angstrom Trên thực t...
Ngày tải lên: 27/05/2015, 23:22
Báo cáo khoa học: Evidence for two different electron transfer pathways in the same enzyme, nitrate reductase A from Escherichia coli potx
... containing a low-potential and a high-potential [Fe-S] Thus each structural domain of b may be a transfer unit for the electron transfer pathway in this enzyme In our scheme we have integrated these ... described for fumarate reductase from Escherichia coli, where the separation of oxidative and reductive activities suggests there are two quinol binding sites...
Ngày tải lên: 07/03/2014, 15:20
Báo cáo khoa học: Knock-out of the chloroplast-encoded PSI-J subunit of photosystem I in Nicotiana tabacum PSI-J is required for efficient electron transfer and stable accumulation of photosystem I pot
... and the other for integrity and stabilization of a luminal domain involving at least PSI-N and the N-terminal part of PSI-F which is required for efficient electron transfer Fig Alignment of PSI-J ... 2), suggesting that the PSI antenna size is unaffected by the elimination of PSI-J and furthermore ruling out the possibility that PSI-J is stric...
Ngày tải lên: 16/03/2014, 11:20
Effect of tunneling current on the growth of silicon islands on si(111) surfaces with a scanning tunneling microscope
... silicon islands with the STM and examined the quality of STM images of the islands Note that after the creation of islands with the STM, the accumulation of silicon atoms on the tip apex was not ... distinguish mechanisms of the early stage and late stage of island growth At the late stage, the transfer of silicon atoms from the STM tip...
Ngày tải lên: 16/03/2014, 15:32
Báo cáo khoa học: Re-evaluation of intramolecular long-range electron transfer between tyrosine and tryptophan in lysozymes Evidence for the participation of other residues doc
... signal was observed in all peptides containing tyrosine 23 or 53 but not in peptides containing tyrosine 20 alone According to these results, tyrosines 23 and 53 could be involved in the dimerizations ... estimate the TrpÆ and TyrOÆ yields in the lysozymes from the magnitudes of the absorbance changes at 510 and 410 nm and the assumption that the extincti...
Ngày tải lên: 17/03/2014, 10:20
Báo cáo y học: "The use of 3D surface scanning for the measurement and assessment of the human foot" doc
... Telfer and Woodburn: The use of 3D surface scanning for the measurement and assessment of the human foot Journal of Foot and Ankle Research 2010 3:19 Submit your next manuscript to BioMed Central and ... density foam box The foam collapses under their weight and when they step out of the box there is a fairly close negative of the shape of the...
Ngày tải lên: 10/08/2014, 21:24
An integrated sputter ion pump add on lens unit for scanning electron microscopes
... Chapter an Add- on Lens with an Integrated Sputter- Ion Pump Design 42 4.1 The Concept of an Add- on Lens with an Integrated Sputter- Ion Pump 42 4.2 Basic Requirement of Add- on Lens 43 4.3 Sputter- ion ... design and use of an add- on lens for the Scanning Electron Microscope (SEM) Add- on lenses have been proposed as a way of increasin...
Ngày tải lên: 28/09/2015, 13:38
ETSI WIDEBAND CDMA STANDARD FOR THE UTRA FDD AIR INTERFACE.pdf
... Wideband CDMA Standard for the UTRA FDD Air Interface 19 Figure 14 Average BER Performance with Variable Chip Rate ETSI Wideband CDMA Standard for the UTRA FDD Air Interface 20 5.0 CONCLUSION The framework ... Access ETSI Wideband CDMA Standard for the UTRA FDD Air Interface 2.0 UMTS TERRESTRIAL RADIO ACCESS The ETSI UTRA is based on...
Ngày tải lên: 04/08/2012, 14:24
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