Acoustics Research

Dr. Siu-Kit Lau (Eddie)

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Research Fellow /Associate /Assistant in Acoustics

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Job Description:

Proposed Input:

We are looking for a full-time (5 days a week, 8 hours) Research Fellow/Associate/Assistant for 12 months appointment to commence in September 2019 or as soon as possible.

Project: The research objective of this proposal is to prove the conjecture that the use of porous media with some novel structures can improve noise reduction at low frequencies. Emphasis will be placed on the acoustic characterisation of porous media and acoustic metamaterial.  The proposed study is based on the development of numerical models for the proposed design, and their validity will be confirmed by sound transmission and absorption experiments.

This project involves diverse theoretical as well as applied facets of porous materials and numerical prediction as well as acoustics.  The candidates are preferred to have prior hands-on experience with theoretical, numerical and/or experimental background in acoustics.  This position will also assist in and contribute to project management to ensure the successful completion of the proposed work.  Specifically, this position will be responsible for theoretical and experiment development in acoustics research, development of numerical models, data analysis and reporting to MOE.  S/he will assist in and contribute to other aspects of the research and dissemination of the results. S/he will contribute to the preparation of scientific manuscripts and/or other literature for publications.

Domain: Architecture, Urban planning, Acoustics, Engineering

The appointed RA will be involved in the following tasks:

  • Assist in and contribute to all the tasks related to publications in the domain.
  • Participate in research and writing of articles
  • Assist in and contribute to development, design, and setup of the experiments
  • Develop numerical modelling (using COMSOL) and experiment study
  • Analysis and collection of data, and graphical representation of information using suitable tools (such as MATLAB, etc.)

Job Requirements:

  • Bachelor’s (preferably Master’s) Degree in Architecture, Mechanical Engineering or another relevant engineering for research assistant and associate, respectively
  • Ph.D. Degree in Architecture, Acoustics or another relevant engineering for research fellow position
  • Knowledge of acoustics and its numerical simulations and experiments.
  • Experience in research work and writing
  • Skilled in FEM modelling and data analysis using COMSOL and MATLAB, respectively
  • Capacity to work independently
  • Management skills

Compulsory Information to be included.

Interested candidates should contact Siu-Kit (Eddie) LAU at slau@nus.edu.sg with the following:

  • Cover letter specifying your research interests and experience
  • CV (including GPA/CAP ranking), which should include names and contact of 3 referees
  • Most significant publications, if available (no more than two)
  • A copy of official transcripts (Bachelor degree and Master degree)

Only shortlisted candidates will be notified and will be asked to complete and submit the NUS Personal Data Consent for Job Applicants to the contact person indicated in the advertisement. (P/S: please double-click on “NUS Personal Data Consent for Job Applicants) and paste the URL (http://www.nus.edu.sg/careers/potentialhires/applicationprocess/NUS-Personal-Data-Consent-for-Job-Applicants.pdf ) onto another new webpage to retrieve the document.

Shortlisted candidates may also be asked to submit additional documents for review, if necessary.

Research Assistant/ Associate/ Fellow in Acoustics

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Job Description:

Proposed Input:

We are looking for a full-time (5 days a week, 8 hours) Research Assistant for 24 months appointment to commence in July to September 2018.

Project: The research objective of this proposal is to prove the conjecture that the use of porous media with some novel structures can improve noise reduction at low frequencies. Emphasis will be placed on the acoustic characterisation of porous media and acoustic metamaterial.  The proposed study is based on the development of numerical models for the proposed design, and their validity will be confirmed by sound transmission and absorption experiments.

This project involves diverse theoretical as well as applied facets of porous materials and numerical prediction as well as acoustics.  The candidates are preferred to have prior hands-on experience with theoretical and numerical background in acoustics.  This position will also assist in and contribute to project management to ensure the successful completion of the proposed work.  Specifically, this position will be responsible for theoretical and experiment development in acoustics research, development of numerical models, data analysis and reporting to MOE.  S/he will assist in and contribute to other aspects of the research and dissemination of the results. S/he will contribute to the preparation of scientific manuscripts and/or other literature for publications. Preferably, for Research Assistant/Associate, s/he is going to register for a part-time research degree (e.g. PhD or Master by research) with the project results.

Domain: Architecture, Urban planning, Acoustics, Engineering

The appointed RA will be involved in the following tasks:

  • Assist in and contribute to all the tasks related to publications in the domain.
  • Participate in research and writing of articles
  • Assist in and contribute to development, design, and setup of the experiments
  • Develop numerical modelling (using COMSOL)
  • Analysis and collection of data, and graphical representation of information using suitable tools (such as MATLAB, etc.)

Job Requirements:

  • Bachelor’s (preferably Master’s) Degree in Architecture, Mechanical Engineering or another relevant engineering
  • Knowledge of acoustics and its numerical simulations.
  • Experience in research work and writing
  • Skilled in FEM modelling and data analysis using COMSOL and MATLAB, respectively
  • Capacity to work independently
  • Management skills

Compulsory Information to be included.

Interested candidates should contact Siu-Kit (Eddie) LAU at slau@nus.edu.sg with the following:

  1. Cover letter specifying your research interests and experience
  2. CV (including GPA/CAP ranking), which should include names and contact of 3 referees
  3. Most significant publications, if available (no more than two)
  4. A copy of official transcripts (Bachelor degree and Master degree)

Only shortlisted candidates will be notified and will be asked to complete and submit the NUS Personal Data Consent for Job Applicants to the contact person indicated in the advertisement. (P/S: please double-click on “NUS Personal Data Consent for Job Applicants) and paste the URL (http://www.nus.edu.sg/careers/potentialhires/applicationprocess/NUS-Personal-Data-Consent-for-Job-Applicants.pdf ) onto another new webpage to retrieve the document.

Shortlisted candidates may also be asked to submit additional documents for review, if necessary.

Compensation

Salary: S$2500 – S$4000 per month

An impedance-mobility model of acoustic metamaterials

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A fast prediction method for the performance of stacked membrane-type metamaterials has been developed using An impedance-mobility model.  Matthew Blevins of the University of Nebraska-Lincoln introduced the method and a Matlab platform regarding this approach at the Spring 2015 meeting of Acoustical Society of America.  The work is collaborated and supervised by Dr. Siu-Kit Lau and Dr. Lily Wang.  Metamaterials are man-made materials to have properties that have not yet been found in nature. Membrane-type acoustic metamaterials have been proven to exhibit high low-frequency transmission loss despite their small thickness and light weight.  The efficient model based on the impedance-mobility can be used to facilitate design and optimization of stacked membrane-type acoustic metamaterials.

Abstract (metamaterials) of the presentation in the ASA meeting spring 2015 in Pittsburgh, PA

Abstract (metamaterials) of the presentation in the ASA meeting spring 2015 in Pittsburgh, PA

Cover page for Science (Journal) in January 2014 by Caleb Sieck

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Cover page of Science on Jan 2014

Cover page of Science on Jan 2014 (Source: Science, http://www.sciencemag.org)

Congratulations to Caleb Sieck!  He has a publication of cover page for Science (journal) in January 2014!  Science (journal) is a world leading journal of scientific research with very high impact factor (over 31 in 2012).  The article shows the results of a circulator for sound, which sound can be guided to flow in particular directions, but not in the opposite directions.  Caleb was advised by Dr. Siu-Kit Lau on his MS degree in UNL in 2009 to 2013 for “Investigation of Sound Transmission through an Open Window into a Room“.  He is now studying his PhD in University of Texas at Austin with a topic related to metamaterials.