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Takashi Buma
Assistant Professor
Department of Electrical and Computer Engineering   
209 Steinmetz
Union College
Schenectady, NY 12308
Phone: 518-388-6334
Email: bumat@union.edu
 
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Teaching

·        ECE 363 – Design of Electronic Circuits (F11 - F13, F15-16)

·        BNG 386 – Biomedical Instrumentation (W12 - W17)

·        ECE 248 – Semiconductor Devices and Circuits (S12 - S16)

·        BNG/ECE 487 –Medical Imaging Systems (S12, S14, W16)


 

Research

 

Biomedical Ultrasonics and Biophotonics Laboratory (BUBL)

 

Location: 320 Butterfield Hall

  ·         Research Areas:

1)    Photoacoustic Microscopy (PAM)

 

Our main research area is developing new lasers for photoacoustic Description: Description: Description: Description: Description: Description: Description: Description: Description: C:\Users\bumat\Documents\TakWebSite\Buma_HomePage\images\SRS.jpgmicroscopy (PAM), a biomedical imaging technique that combines laser excitation and ultrasonic detection. PAM relies on optical absorption that is natural to tissue, so it can produce label-free high contrast images. A critical component of a PAM system is a pulsed laser with an adjustable wavelength. Our current goal is to develop affordable, compact, and rapidly tunable pulsed lasers for PAM. In particular, we have been exploring techniques based on nonlinear fiber optics.

 

2)    Optoacoustic Sensors

Description: Description: Description: Description: Description: Description: Description: Description: Description: Description: images\Etalon.jpgAnother BUBL research area is developing optoacoustic sensors for high frequency ultrasound. Very high resolution ultrasound imaging, as well as photoacoustic microscopy, require detecting high frequency acoustic waves. Optoacoustic sensors, which use light to detect ultrasound, can potentially provide much better performance than conventional piezoelectric sensors. We are particularly interested in miniature optical resonators such as thin-film Fabry-Perot interferometers and whispering gallery mode microresonators.

 

3)    Optical Coherence Tomography (OCT)

Description: Description: Description: Description: Description: Description: Description: C:\Users\bumat\Documents\TakWebSite\Buma_HomePage\images\RealFake.jpgWe also do some research in optical coherence tomography (OCT), focusing more on applications rather than instrumentation development. OCT is basically an optical version of ultrasound imaging, where it displays cross-sectional images of tissue at video frame rates. OCT can only image over a small region and is limited to a depth of about 1 mm in tissue. However, its 3-D imaging capability is particularly valuable for a variety of biomedical applications.

 

·         BUBL Publications

Journal Papers (* denotes Union students)

[1]         T. Buma, J. L. Farland*, and M. R. Ferrari*, “Near-infrared multispectral photoacoustic microscopy using a graded-index fiber amplifier,” Photoacoustics, Vol. 4(3), 83-90 (2016).

[2]         T. Buma, B. C. Wilkinson*, and T. C. Sheehan*, “Near-infrared spectroscopic photoacoustic microscopy using a multi-color fiber laser source,” Biomed. Opt. Express, Vol. 6(8), 2819-2829 (2015).

[3]         Pelivanov, T. Buma, J. Xia, C.-W. Wei, M. O’Donnell, “NDT of fiber-reinforced composites with a new fiber-optic pump-probe laser-ultrasound system”, Photoacoustics, Vol. 2, pp. 63-74 (2014).

[4]         Pelivanov, T. Buma, J. Xia, C.-W. Wei, M. O’Donnell, “A new fiber-optic non-contact compact laser-ultrasound scanner for fast non-destructive testing and evaluation of aircraft composites”, J. Appl. Phys., Vol. 115 (11), 113105 (2014).

[5]         Ashok Ramasubramanian, Quynh B. ChuLaGraff, Takashi Buma, Kevin T. Chico*, Meagan E. Carnes*, Kyra R. Burnett*, Sarah A. Bradner*, and Shaun S. Gordon*. "On the role of intrinsic and extrinsic forces in early cardiac slooping." Developmental Dynamics (2013).

Conference Papers (* denotes Union students)

[1]         S. Choi* and T. Buma, “Injection-seeded Raman fiber amplifier for photoacoustic microscopy of lipids,” IEEE International Ultrasonics Symposium, Tours, France (2016. [Oral]

[2]         M. R. Ferrari*, J. L. Farland*, and T. Buma, “Photoacoustic microscopy using four-wave mixing in a multimode fiber,” IEEE International Ultrasonics Symposium, Taipe, Taiwan, pp. 1 – 4 (2015). [Oral]

[3]         J. L. Farland*, M. R. Ferrari*, and T. Buma, “Photoacoustic microscopy of lipids using a graded-index fiber amplifier,” IEEE International Ultrasonics Symposium, Taipei, Taiwan, pp. 1 – 4 (2015). [Oral]

[4]         B. C. Wilkinson*, T. C. Sheehan*, and T. Buma, “Spectroscopic photoacoustic microscopy in the 1064-1300 nm range using a pulsed multi-color source based on stimulated Raman scattering,” IEEE International Ultrasonics Symposium, Chicago, USA, Sep. 2014. [Oral]

[5]         K. J. Hammer*, and T. Buma, “Microsphere resonator for optoacoustic detection of high frequency ultrasound,” IEEE International Ultrasonics Symposium, Chicago, USA, Sep. 2014. [Oral]

[6]         A. K. Loya*, J. P. Dumas*, and T. Buma, “Photoacoustic microscopy with a tunable source based on a large mode-area photonic crystal fiber,” IEEE International Ultrasonics Symposium, Dresden, Germany, Oct. 2012. [Oral]

Conference Abstracts (* denotes Union students)

[1]         B. C. Wilkinson*, T. C. Sheehan*, and T. Buma, “Near-infrared spectroscopic photoacoustic microscopy using a pulsed multi-color source based on stimulated Raman scattering,” Biomedical Engineering Society (BMES) Annual Meeting, San Antonio, TX (2014). [Poster]

[2]         T. C. Sheehan*, B. C. Wilkinson*, and T. Buma, “Spectroscopic photoacoustic microscopy with a multi-color pulsed laser using a graded-index multimode optical fiber,” Biomedical Engineering Society (BMES) Annual Meeting, San Antonio, TX (2014). [Poster]

[3]         K. J. Hammer*, and T. Buma, “High frequency optoacoustic sensor using a microsphere resonator,” Biomedical Engineering Society (BMES) Annual Meeting, San Antonio, TX (2014). [Poster]

[4]         A. K. Loya*, J. P. Dumas*, and T. Buma, “Dual-wavelength photoacoustic microscopy at 532 and 1064 nm with a cost-effective microchip laser,” Biomedical Engineering Society (BMES) Annual Meeting, Seattle, WA (2013). [Poster]

[5]         J. P. Dumas*, A. K. Loya*, and T. Buma, “High speed dual-wavelength photoacoustic microscopy with an acousto-optic tunable filter,” Biomedical Engineering Society (BMES) Annual Meeting, Seattle, WA (2013). [Poster]

[6]         A. K. Loya*, J. P. Dumas*, D. Koeplinger, and T. Buma, “Photoacoustic microscopy with a multi-color laser source based on stimulated Raman scattering and four-wave mixing,” Biomedical Engineering Society (BMES) Annual Meeting, Atlanta, GA (2012). [Poster]

·         Research Members:

 o   Class of 2017

  

Sam Choi

(BNG)

 

 

 

o   Class of 2016

  

Jess Farland

(BNG)

Meggie Ferrari

(BNG)

Htoo Wai Htet

(EE & CS) 

  

o   Class of 2015

 

Kristofer Hammer

(BNG)

Dani Liu

(EE)

Tim Sheehan

(BNG)

 

Ben Wilkinson

(BNG)

 

o   Class of 2014

 

Azmi Ahmad

(BNG)

Kim Derosier

(BNG)

Vishnu Dosakayala

(CpE)

 

J. P. Dumas

(BNG)

Amy Loya

(BNG)

Ryan Mohr

(EE)

 

 

o   Class of 2013

 

 

Shaun Gordon

(EE)

Dan Hernandez

(EE)

Amin Meyghani

(EE)

 

 

Phone:  (518) 388-6334 (Office)
Email:   bumat@union.edu

Last updated 12/08/16