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DSpace at MIT (28.952 recursos)
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Mostrando recursos 1 - 20 de 122

1. Ballistic Transport in Nanostructures from First-Principles Simulations - Marzari, Nicola
Our approach starts from a quantum-mechanical description of the electronic structure of the system under consideration, performed at the density-functional theory level and using finite-temperature molecular dynamics simulations to obtain an ensemble of the most likely microscopic configurations.

2. Characterization and Modeling of Stress Evolution During Nickel Silicides Formation - Liew, K.P.; Li, Yi; Yeadon, Mark; Bernstein, R.; Thompson, Carl V.
An curvature measurement technique was used to characterize the stress evolution during reaction of a Ni film and a silicon substrate to form nickel silicide.

3. Charge Storage Mechanism and Size Control of Germanium Nanocrystals in a Tri-layer Insulator Structure of a MIS Memory Device - Teo, L.W.; Ho, Van Tai; Tay, M.S.; Lei, Y.; Choi, Wee Kiong; Chim, Wai Kin; Antoniadis, Dimitri A.; Fitzgerald, Eugene A.
A tri-layer metal-insulator-semiconductor (MIS) memory device structure comprising of a thin (~5nm) silicon dioxide (SiO₂) layer grown using rapid thermal oxidation (RTO), followed by a layer of Ge+SiO₂ of varying thickness (3 - 6 nm) deposited using a radio frequency (rf) co-sputtering technique, and a capping SiO₂ layer (50nm) deposited using rf sputtering is investigated.

4. Computation and Simulation of the Effect of Microstructures on Material Properties - Carter, W. Craig
Many material properties depend on specific details of microstructure and both optimal material performance and material reliability often correlate directly to microstructure.

5. A continuum theory of amorphous solids undergoing large deformations, with application to polymeric glasses - Anand, Lallit
Introducing an internal-state variable that represents the local free-volume associated with certain metastable states, we are able to capture the highly non-linear stress-strain behavior that precedes the yield-peak and gives rise to post-yield strain-softening.

6. Effect of Wafer Bow and Etch Patterns in Direct Wafer Bonding - Spearing, S. Mark; Turner, K.T.
Direct wafer bonding has been identified as an en-abling technology for microelectromechanical systems (MEMS).

7. Evolution of AlN buffer layers on Silicon and the effect on the property of the expitaxial GaN film - Zang, Keyan; Wang, Lianshan; Chua, Soo-Jin; Thompson, Carl V.
The structure and morphology of subsequently grown GaN film were characterized by optical microscopy, scanning electron microscopy, x-ray diffraction, and photoluminescence measurement.

8. Fabrication of Highly Ordered Nanoparticle Arrays Using Thin Porous Alumina Masks - Lei, Y.; Teo, L.W.; Yeong, K.S.; See, Y.H.; Chim, Wai Kin; Choi, Wee Kiong; Thong, J.T.L.
Highly ordered nanoparticle arrays have been successfully fabricated by our group recently using ultra-thin porous alumina membranes as masks in the evaporation process.

9. First Principles Modeling for Research and Design of New Materials - Ceder, Gerbrand
First principles computation can be used to investigate an design materials in ways that can not be achieved with experimental means.

10. GaN Based Nanomaterials Fabrication with Anodic Aluminium Oxide by MOCVD - Wang, Yadong; Sander, Melissa; Peng, Chen; Chua, Soo-Jin; Fonstad, Clifton G. Jr.
A highly self-ordered hexagonal array of cylindrical pores has been fabricated by anodizing a thin film of Al on substrate and subsequent growth of GaN and InGaN in these nanoholes has been performed.

11. Laser Fabrication by Using Photonic Crystal - Vajpeyi, Agam P.; Chua, Soo-Jin; Fitzgerald, Eugene A.
This paper involves the calculation for composition of different layer used in laser structure and the simulation of cavity, formed by creating air columns in the InGaAsP medium, for square lattice.

12. Mechanical properties of La-based bulk amorphous alloy and composites - Lee, Irene Mei Ling; Li, Yi; Carter, W. Craig
Results showed improvement in fracture energy of glassy metals with the presence intermetallic phases, but deteriorated in the presence of dendrite phases and high volume % of crystalline phases.

13. MEMS Materials and Processes: a research overview - Spearing, S. Mark
Underpinning research is being conducted in five areas: room temperature strength characterization, elevated temperature strength characterization, processing of Si/SiC hybrid structures, modeling of wafer bonding processes and development of high temperature fluid interconnections.

14. Metallic Cluster Coalescence: Molecular Dynamics Simulations of Boundary Formation - Takahashi, A. R.; Thompson, Carl V.; Carter, W. Craig
During the evaporative deposition of polycrystalline thin films, the development of a tensile stress at small film thicknesses is associated with island coalescence.

15. Novel CMOS-Compatible Optical Platform - Pitera, Arthur J.; Groenert, M. E.; Yang, V. K.; Lee, Minjoo L.; Leitz, Christopher W.; Taraschi, G.; Cheng, Zhiyuan; Fitzgerald, Eugene A.
A research synopsis is presented summarizing work with integration of Ge and III-V semiconductors and optical devices with Si.

16. Research Summary: Object Oriented Finite Element Analysis for Materials Science*: A Tool for Viscoelastic Polymer Composite Deformation Analysis - Raghavan, Rajesh; Carter, W. Craig
A public domain code "Object Oriented Finite element analysis for materials science" (OOF) has been extended to include tools for analysis of viscoelastic materials.

17. Research on Polycrystalline Films for Micro- and Nano-Systems - Thompson, Carl V.
Polycrystalline films are used in a wide array of micro- and nano-scale devices, for electronic, mechanical, magnetic, photonic and chemical functions.

18. SiGe-On-Insulator (SGOI): Two Structures for CMOS Application - Cheng, Zhiyuan; Jung, Jongwan; Lee, Minjoo L.; Nayfeh, Hasan; Pitera, Arthur J.; Hoyt, Judy L.; Fitzgerald, Eugene A.; Antoniadis, Dimitri A.
Two SiGe-on-insulator (SGOI) structures for CMOS application are presented: surface-channel strained-Si on SGOI (SSOI) and dual-channel SGOI structures.

19. Solid State Thin Film Lithium Microbatteries - Shi, Z.; Lü, L.; Ceder, Gerbrand
Solid state thin film lithium microbatteries fabricated by pulsed-laser deposition (PLD) are suggested.

20. Bulk Glass Formation in Eutectic of La-Cu-Ni-Al Metallic Alloys - Zhang, Yong; Tan, Hao; Li, Yi
A eutectic in La-rich La-Cu₀.₅Ni₀.₅-Al alloys was determined by studying the melting behaviors and the microstructure observations.

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