electronic transport through metal nanowire contacts
Báo cáo khóa học: Identification of residues controlling transport through the yeast aquaglyceroporin Fps1 using a genetic screen ppt
Ngày tải lên :
07/03/2014, 15:20
... distinguished through specific mutations High glycerol transport capacity through the Fps1 mutant proteins We have previously shown that the ability of Fps1 derivatives to mediate glycerol transport ... including P236L, G348D, H350L and L451W As observed previously, glycerol transport through hyperactive Fps1 is higher than that through wild type under all conditions and is down-regulated by hyperosmotic ... analyses have revealed the mechanisms that ensure very rapid transport and at the same time high selectivity of water or glycerol transport [17–22] Fps1 is an atypical aquaglyceroporin as the...
- 9
- 383
- 0
Báo cáo khoa học: cAMP increases mitochondrial cholesterol transport through the induction of arachidonic acid release inside this organelle in Leydig cells pdf
Ngày tải lên :
16/03/2014, 12:20
... one of the proteins involved in cholesterol transport [15–19] Although it is clear from previous publications that AA plays its role in the process through the conversion to its lipoxygenated ... action on 5012 cholesterol transport into the mitochondria via a specific release in this organelle This knowledge would be important for the understanding of cholesterol transport in the classical ... that AA can exert a role on cholesterol transport without the induction of StAR protein The demonstration that AA and ⁄ or AA-CoA stimulate cholesterol transport in isolated mitochondria suggests...
- 11
- 430
- 0
Electronic transport properties of single crystal silicon nanowires fabricated using an atomic force microscope
Ngày tải lên :
16/03/2014, 15:15
... inset Fig 3) This Si nanowire, therefore, acts as a lateral gate nano-FET with a large gate transconductance gain At low temperature (4 –13 K), for heavily doped nanowires, the transport is nonlinear ... Low-roughness nanowires with a constant width of 50 nm are typically obtained, while the channel N Clà ment et al / Physica E 13 (2002) 999 – 1002 e Fig AFM micrograph of a side-gated silicon nanowire ... density up to 2×105 A=cm2 ows through the wire It can be re- 1001 Fig IDS –VDS curves and IDS –VG transconductance (inset) curves acquired at 300 K for the silicon nanowire device presented in...
- 4
- 398
- 0
WO3nanowires on carbon papers: electronic transport, improvedultraviolet-light photodetectors and excellent field emitters
Ngày tải lên :
20/03/2014, 13:12
... make WO3 nanowires valuable as functional building blocks for the fabrication of optoelectronic nanodevices Therefore, the investigation of electronic transport mechanisms of individual WO3 nanowires ... present unique WO3 nanowires on carbon papers are promising candidates for constructing high-performance electronic and optoelectronic devices Introduction In the family of transition metal oxides, ... WO3 nanowires is very important.2 To accurately measure transport behaviors of WO3 nanowires, it is essential to form ohmic contacts between nanowires and electrodes However, this has achieved little...
- 7
- 512
- 0
Metal Nanowire Arrays by Electrodeposition
Ngày tải lên :
21/03/2014, 12:17
... Electrodeposition of an electronically conductive metal oxide nanowires followed by reduction in hydrogen b) Direct electrodeposition of metal nanowires electrodeposition of metal oxide nanowires followed ... conductive metal oxides, including Cu2O and Fe2O3 , may also be electrodeposited If these metal oxide nanowires are already conductive, what is the motivation for reducing these to obtain metal nanowires? ... permit the formation of new metal nuclei In contrast, the formation of new metal oxide nuclei appears to continue during the electrodeposition of metal oxide nanowires Metal particles that have...
- 8
- 486
- 0
dynamical symmetries for nanostructures implicit symmetries in single-electron transport through real and artificial molecules
Ngày tải lên :
29/05/2014, 23:50
... weak tunneling and/or capacitive contact with reservoirs (metallic electrodes attached to quantum dots, metallic substrates or edges of nanowires for molecular complexes deposited on these surfaces ... 3.6.2 Nanotubes as quantum dots 95 3.6.3 Single electron tunneling through metal organic complexes 96 3.6.4 Vibrational degrees of freedom in single molecular tunneling ... Kikoin et al., Dynamical Symmetries for Nanostructures: Implicit Symmetries in Single-Electron Transport Through Real and Artificial Molecules, DOI 10.1007/978-3-211-99724-6_1, © 2012 Springer-Verlag/Wien...
- 358
- 471
- 0
semiconductor nanostructures quantum states and electronic transport feb 2010
Ngày tải lên :
11/06/2014, 10:16
... as the five fundamental transport phenomena of mesoscopic physics that need to be covered As a preparation, Drude transport theory and the Landauer– B¨ttiker description of transport are essential ... reading Exercises 175 175 177 182 185 186 188 189 189 192 192 12 Tunneling transport through potential barriers 12.1 Tunneling through a single delta-barrier 12.2 Perturbative treatment of the tunneling ... interaction model 375 18.2.10 Configuration interaction, exact diagonalization 376 18.3 Electronic transport through quantum dots 377 18.3.1 Resonant tunneling 377 18.3.2 Sequential tunneling 387...
- 569
- 553
- 0
Báo cáo hóa học: " Nanoscale characterization of electrical transport at metal/3C-SiC interfaces" pptx
Ngày tải lên :
21/06/2014, 05:20
... “Comparison of Pt-Based Ohmic Contacts with Ti-Al Ohmic Contacts for p-Type SiC” Jpn J Appl Phys 2005, 44:5933 Kang SC, Kum BH, Do SJ, Je JH, Shin MW: “Annealing effects of Schottky contacts on the characteristics ... Schottky contacts to 3C-SiC” Mater Sci Eng B 1999, 61-62:406 Papanicolaou NA, Cristou A, Gipe ML: “Pt and PtSix Schottky contacts on n-type β-SiC” J Appl Phys 1989, 65:3526 Tung RT: “Electron transport ... theory [13] Results and discussion A key factor for the conduction properties through a contact is the quality of the metal/ semiconductor interface, e.g., structural defects reaching the semiconductor...
- 5
- 207
- 0
Báo cáo hóa học: " Do Twin Boundaries Always Strengthen Metal Nanowire" pptx
Ngày tải lên :
22/06/2014, 01:20
... conclusion, molecular dynamics simulations on nanotwinned copper nanowires reveal that twin boundaries not always strengthen metallic nanowires For nanowires with square cross-sections, strength increases ... nucleation is identifiable through the bond pair analysis Shown in Fig are ry and rn as functions of twin spacing d Indeed, twins not always strengthen nanowires For the nanowires of square cross-sections, ... spacing for nanowires with circular cross-sections; the strength with a twin boundaries is slightly lower than that in single crystals Whether twin boundaries strengthening metallic nanowires depends...
- 5
- 208
- 0
Báo cáo y học: " The function of 7D-cadherins: a mathematical model predicts physiological importance for water transport through simple epithelia" pdf
Ngày tải lên :
13/08/2014, 16:20
... water transport through a simple epithelium In a narrow cleft the cells can increase the concentration of osmotic active substances easily by active transport, but the friction of the transported ... compartment through the TJ or from the interstitium Ions enter through the lateral membrane due to the ATPases and leave the LIC due to diffusion and due to the water flux H2O, i.e through convective ... paracellular water transport through simple epithelia Although the model makes several simplifying assumptions, like the assumption of homogeneous electrolyte concentration throughout the length...
- 12
- 273
- 0
Modeling and simulation of electron transport through nanoscale heterojunctions
Ngày tải lên :
10/09/2015, 15:48
... ballistic transport throughout the entire tubes, and decoherence by scattering only takes place at the very end at CHAPTER LITERATURE REVIEWS Vg metal QPC Conductance (2e /h) metal QPC 2DEG 2DEG Vg metal ... one of them is the interface problems with the metal probes which typically produce considerable resistance Schottky barriers formed at CNT -metal contacts have been well known to be crucial for ... observed in GaAlAs-GaAs heterostructures [37] the interface with the metal probes Quantum point contacts (QPC) and molecular electronics are also particularly described under this category The...
- 147
- 567
- 0
Redox reactions and charge transport through polyaniline membranes
Ngày tải lên :
15/09/2015, 17:10
... Redox and ion transport properties of polyaniline 23 2.3.1 Redox properties of polyaniline 23 2.3.2 Redox associated ion transport properties of polyaniline 26 2.3.3 Direct ion transport processes ... equivalent transport rate was around 25 times higher than that with PANI-HCl membrane This process is demonstrated to be driven by electron/anion coupled counter-current transport through the ... transmembrane transport through PANI membrane Furthermore, ion diffusion was demonstrated to be the rate limiting step in different processes Based on transmembrane redox reactions through PANI-CSA...
- 248
- 163
- 0
Study on solute transport through RO NF membranes
Ngày tải lên :
16/09/2015, 17:12
... FOR ION TRANSPORT THROUGH RO 102 MEMBRANES 5.1 Coupled Transport Mechanisms 103 5.2 Mathematical Model 105 5.3 Numerical Calculations 107 5.4 Results and Discussions 110 5.4.1 Transport through ... Solution 67 3.6 Summary 71 A NEW FORMULATION FOR ION TRANSPORT 72 CHAPTER THROUGH DENSE RO MEMBRANES v 4.1 Model Development 73 4.1.1 Ion Transport through RO membrane 73 4.1.2 Electrochemical Equilibrium ... behaviors of the solute transport through RO/NF membranes and the role of electrical interactions on the transport This research was mainly focused on developing a comprehensive ion transport theory...
- 200
- 236
- 0
cross plane electronic and thermal transport properties of p type la0.67sr0.33mno3 lamno3 perovskite oxide metal semiconductor superlattices
Ngày tải lên :
06/05/2014, 08:53
... mechanism through an oxygen ion The double exchange transport mechanism is responsible for the ferromagnetic and conductive ground state for Sr2þ doped manganates.9,10 LSMO is half-metallic, ... of freedom.21 The low temperature ferromagnetic metal to high temperature paramagnetic metal transition causes an increase in conductivity The transport above the phase transition temperature ... strontium manganate La0.67Sr0.33MnO3 (LSMO) was investigated as a metal and lanthanum manganate, LaMnO3 (LMO), as a p-type semiconductor for metal/ semiconductor superlattices grown on strontium titanate...
- 8
- 461
- 0
Investigations of carbon nanotube based electronic devices with focus on metal and carbon nanotube contacts
Ngày tải lên :
10/09/2015, 15:52
... CNT and metal end-contact is by forming metal carbide at the CNT and metal interface (Zhang et al., 1999) Chapter Introduction In experiments, transition metals are often employed for CNT contacts ... parameter for selecting metals to form CNT and metal carbide contacts for the application of CNT based devices 1.2.1.3 Summary of the atomic structure of carbon nanotube and metal contacts In conclusion ... tunneling through the barrier is more important than thermal emission over the barrier This has important consequences for the charge transport at the CNT and metal contacts In a 3D system, metal- induced...
- 220
- 404
- 0
Báo cáo Y học: Diffusion through channel derivatives of the Escherichia coli FhuA transport protein doc
Ngày tải lên :
31/03/2014, 08:20
... D335–355 did not transport ferrichrome (Fig 6A and Table 3) Since FhuAD335–355 was also transport inactive, removal of the globular domain did not convert FhuAD335–355 into an active transporter Ó ... TonBdependent active ferrichrome transport The b-barrel domain alone functioned as an active transporter With higher concentrations of ferrichrome than are required for transport, tonB mutant cells ... did not subtantially increase diffusion through the b-barrel FhuAD322–336 exhibited 75% of the [55Fe3+]ferrichrome transport activity of wild-type FhuA The transport activity was reduced further...
- 12
- 418
- 0
cross plane thermoelectric transport in p type la0.67sr0.33mno3 lamno3 oxide metal semiconductor superlattices
Ngày tải lên :
06/05/2014, 08:53
... Kirk, X Xu, J Zide, and A Shakouri, “Cross-plane electronic and thermal transport properties of p-type La0.67Sr0.33MnO3/LaMnO3 perovskite oxide metal/ semiconductor superlattices,” J Appl Phys ... interaction between adjacent Mn ions is dominated by the doubleexchange mechanism through an oxygen ion and is responsible for metallic behavior in LSMO.10 These Mn4þ and Mn3þ ion concentrations are susceptible ... that of bulk oxides and composite materials and comparable to heavy metallic alloys (0.5–2 W/m-K).20 The cross-plane electrical transport (power factor) measurement required etching of cylindrical...
- 8
- 399
- 0
Báo cáo toán học: " Metal work-function-dependent barrier height of Ni contacts with metal-embedded nanoparticles to 4H-SiC" doc
Ngày tải lên :
20/06/2014, 20:20
... basically Ni/SiC contacts embedded with the metal NPs to the 4H-SiC substrate Figure shows the fabricated samples with metal NPs: Ni/SiC contacts embedded with the Au-NPs (NP-1) and Ni/SiC contacts embedded ... dependent on the current transport behavior through the structure of the metal/ 4H-SiC interface It is, therefore, of critical importance to reduce the barrier height of the metal/ 4H-SiC interface ... stable SiC devices, metal contacts to SiC with suitable physical and electrical characteristics are required For example, Ohmic contacts with low contact resistances and Schottky contacts with controlled...
- 17
- 360
- 0