Nanomechanical systems with small dissipation
Name
940566272-MIT.pdf
Description
Full printable version
Size
31.97 MB
Format
Adobe PDF
Checksum (MD5)
2d2d0778ae73205d0eceff1a441d7c12
Author(s)
Tao, Ye, Ph. D. Massachusetts Institute of Technology
Date Issued
2015
Publisher
Massachusetts Institute of Technology
Abstract
This thesis is devoted to a systematic development of methods for controlling energy dissipation in small mechanical systems, specifically nanomechanical resonators with at least one dimension in the deep nanometer range (< 200 nm). We explored three avenues for decreasing intrinsic dissipation and one method for decreasing non-contact friction. The three routes toward lower intrinsic dissipation are surface chemical engineering, alternative materials testing, and geometric optimization through nanofabrication. Reduction in non-contact friction between a vibrating nanomechanical resonator and a surface, spaced nanometers away from the latter, was achieved by using a diamond nanowire as an integrated scanning tip. Each of the four approaches led to between one and two orders of magnitude reduction in dissipation compared to the previous state-of-the-art in the literature. Planned integration of individual successful approaches is expected to result in devices with sufficient force sensitivity and with the suitable geometry for the nanomechanical detection of a single nuclear spin by magnetic resonance force microscopy.
Description
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Chemistry, 2015.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 257-285).
Subjects
Chemistry.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Terms of Use
M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.
Persistent DSpace Link
