Yu Ju Tsai

Yu Ju Tsai

Work History

Work History

Teaching Assistant

Duke University

--Electromagnetism (Undergraduate level) -- Spring 2011

--Guided Wave Optics (Graduate level) -- Spring 2012

Jan 2008 - Present

Graduate Research Assistant

Duke University

-- Designed, simulated and tested of metamaterial based diffractive optical elements, including blazed gratings and computer-generated holograms. (Aug 2010 ~ present)

-- Developed various characterization systems for optical metamaterials, including near-field scanning optical microscopy and far-field imaging system. (Sep 2009 ~ present)

-- Designed, simulated, fabricated and tested plasmonic multi-mode interference (MMI) couplers. (Jan 2008 ~ Sep 2009)

-- Designed and fabricated nano-structures for Surface enhanced Raman spectroscopy (SERS). (July 2008 ~ Sep 2009)

Mar 2007 - Jul 2007

Research Assistant

National Taiwan University

-- Optimized interferometric lithography for the fabrication of diffraction gratings, advised by Dr. Lon A. Wang.

Oct 2005 - Feb 2007


ROC Army


Sep 2009 - Present


Duke University
Sep 2007 - May 2009


Duke University
Sep 2001 - Jun 2005


National Taiwan University


First Year Graduate Student Fellowship, Duke University, 2009


5 years of academic research experiences in the fields of metamaterials, plasmonics and nano-photonics. 


Fields: Metamaterials. Plasmonics. Diffractive Optics. Guided Wave Optics. Near-field Optical Microscopy. E&M modeling. Optical system design.

Design and Modeling: MATLAB. COMSOL. CST. HFSS. AutoCAD.

Fabrication: Optical lithography. Electron beam lithography. Thin-film evaporation.

Characterization: Microscopy. Spectroscopy. SEM. AFM. Near-field scanning optical microscopy (NSOM). Optical fiber system.

Scientific Publications

Peer Reviewed Journals

1.        J. J. Mock, R. T. Hill, Y.-J. Tsai, A. Chilkoti, and D. R. Smith, "Probing Dynamically Tunable Localized Surface Plasmon Resonances of Film-Coupled Nanoparticles by Evanescent Wave Excitation," Nano Letters 12, 1757-1764 (2012).

2.        S. Larouche, Y.-J. Tsai, T. Tyler, N. M. Jokerst, and D. R. Smith, "Infrared metamaterial phase holograms," Nature Materials 11, 450-454 (2012).

3.        J. Hunt, T. Tyler, S. Dhar, Y.-J. Tsai, P. Bowen, S. Larouche, N. M. Jokerst, and D. R. Smith, "Planar, flattened Luneburg lens at infrared wavelengths," Optics Express 20, 1706-1713 (2012).

4.        Y.-J. Tsai, S. Larouche, T. Tyler, G. Lipworth, N. M. Jokerst, and D. R. Smith, "Design and fabrication of a metamaterial gradient index diffraction grating at infrared wavelengths," Optics Express 19, 24411-24423 (2011).

5.        D. R. Smith, Y.-J. Tsai, and S. Larouche, "Analysis of a Gradient Index Metamaterial Blazed Diffraction Grating," Antennas and Wireless Propagation Letters, IEEE 10, 1605-1608 (2011).

6.        Y.-J. Tsai, A. Degiron, N. M. Jokerst, and D. R. Smith, "Plasmonic multi-mode interference couplers," Optics Express 17, 17471-17482 (2009).

Peer Reviewed Conference Abstracts

1.        S. Larouche, Y.-J. Tsai, T. Tyler, N. M. Jokerst, and D. R. Smith, "Metamaterial infrared hologram," in Lasers and Electro-Optics (CLEO), 2012 Conference on, 2012), 1-2.

2.        Y.-J. Tsai, S. Larouche, T. Tyler, G. Lipworth, J. Mock, N. M. Jokerst, and D. R. Smith, "Metamaterial blazed gratings," in Lasers and Electro-Optics (CLEO), 2011 Conference on, 2011), 1-2.