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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

·        BNG 386 – Biomedical Instrumentation

·        ECE 248 – Semiconductor Devices and Circuits

·        BNG/ECE 487 –Medical Imaging Systems


 

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]      I. 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]      I. 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. Chu LaGraff, 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 s-looping." 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, Taipei, 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]

·      Current and Previous Research Members:

Student

 

Graduation Year

 

Major

Life after Union

Nicole Conley

2019

BNG

 

Michael Geiger

2018

EE

 

Sam Choi

2017

BNG

University of Michigan (Ann Arbor, MI): PhD program in BME

Jess  Farland

2016

BNG

Boston Scientific (Marlborough, MA): R&D Department

Meggie Ferrari

2016

BNG

University of Rochester: M.S. in BME (2016-17)

University of Denver: PhD program in BME

Htoo Wai Htet

2016

EE + CS

Watson Fellowship (2016-2017)

Boston University: PhD program in EE

Kris Hammer

2015

BNG

Japan Exchange and Teaching (JET) Program

University of Rochester: PhD program in BME

Dani Liu

2015

EE

Hallam ICS (Malta, NY): Junior Control Engineer

Tim Sheehan

2015

BNG

NIH PostBac IRTA Program (2015-2017)

UC San Diego: PhD program in Neuroscience

Ben Wilkinson

2015

BNG

Harvey Tool (Rowley, MA): Sales Engineer

Azmi Ahmad

2014

BNG

University of Utah: PhD program in BME

Kim Derosier

2014

BNG

GE Power & Water (Greenville, SC): Edison Engineering Development Program

Vishnu Dosakayala

2014

CpE

 

J. P. Dumas

2014

BNG

Rutgers University: PhD program in BME

Amy Loya

2014

BNG

Rensselaer Polytechnic Institute: PhD program in BME

Ryan Mohr

2014

EE

 

Shaun Gordon

2013

EE

X-ray Optical Systems (East Greenbush, NY): Supplier Quality Engineer

Daniel Hernandez

2013

EE

Northrop Grumman / High Street: NOC Engineer

Amin Meyghani

2013

EE

Yodle Inc (New York, NY): Front End Developer

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

Last updated 05/05/17