Dr. Evgeny Twerdowski Profile

Dr. Evgeny Twerdowski

at Univ Leipzig

SPIE Involvement:

Author

Publications (11)

Proceedings Article | 21 April 2008 Paper

High speed ultrasound monitoring in the field of sports biomechanics

M. Zakir Hossain, E. Twerdowski, W. Grill

Proceedings Volume 6935, 693523 (2008) https://doi.org/10.1117/12.776111

KEYWORDS: Ultrasonography, Transducers, Ultrasonics, Signal detection, Eye, Biological research, Actuators, Magnetism, Visualization, Skin

Read Abstract +

Proceedings Article | 10 April 2008 Paper

A differential method for the determination of the time-of-flight for ultrasound under pulsed wide band excitation including chirped signals

K. Tarar, R. Meier, E. Twerdowski, R. Wannemacher, W. Grill

Proceedings Volume 6935, 693519 (2008) https://doi.org/10.1117/12.776158

KEYWORDS: Signal detection, Signal processing, Ultrasonography, Transducers, Ultrasonics, Electronics, Acoustics, Temporal resolution, Software development, Signal attenuation

Read Abstract +

Proceedings Article | 10 April 2008 Paper

Comparative evaluation of ultrasonic lenses and electric point contacts for acoustic flux imaging in piezoelectric single crystals

E. Twerdowski, M. Pluta, R. Wannemacher, W. Grill

Proceedings Volume 6935, 69351U (2008) https://doi.org/10.1117/12.776253

KEYWORDS: Acoustics, Crystals, Ultrasonics, Transducers, Phonons, Lenses, Ultrasonography, Signal detection, Electrodes, Contact lenses

Read Abstract +

Proceedings Article | 10 April 2008 Paper

Determination of the velocity of sound with high resolution by ultrasonic imaging of wedge shaped objects in transmission with vector contrast

U. Amjad, J. Ndop, E. Twerdowski, W. Grill

Proceedings Volume 6935, 69351C (2008) https://doi.org/10.1117/12.776229

KEYWORDS: Acoustics, Transducers, Microfluidics, Image resolution, Glasses, Ultrasonography, Signal detection, Phase contrast, Microfluidic imaging, Ultrasonics

Read Abstract +

Proceedings Article | 10 April 2008 Paper

Recent advances on pipe inspection using guided waves generated by electromagnetic acoustic transducers

Milos Vasiljevic, Tribikram Kundu, Wolfgang Grill, Evgeny Twerdowski

Proceedings Volume 6935, 693507 (2008) https://doi.org/10.1117/12.776271

KEYWORDS: Waveguides, Transducers, Inspection, Acoustics, Wave propagation, Electromagnetism, Defect detection, Radio propagation, Signal generators, Fourier transforms

Read Abstract +

Proceedings Article | 11 April 2007 Paper

Ultrasonic imaging in extinction and velocity contrast by time selective first arrival line tomography in transmission

Andre Schwagmann, Dimo Ivanov, Evgeny Twerdowski, Mieczyslaw Pluta, Wolfgang Grill

Proceedings Volume 6532, 65321N (2007) https://doi.org/10.1117/12.715414

KEYWORDS: Tomography, Transducers, Ultrasonography, Image resolution, 3D image reconstruction, Acoustics, Apodization, Resolution enhancement technologies, Signal detection, Point spread functions

Read Abstract +

Proceedings Article | 11 April 2007 Paper

The influence of the radius of the electrodes employed in Coulomb excitation of acoustic waves in piezoelectric materials

Anowarul Habib, Evgeny Twerdowski, Moritz von Buttlar, Reinhold Wannemacher, Wolfgang Grill

Proceedings Volume 6532, 653214 (2007) https://doi.org/10.1117/12.715716

KEYWORDS: Crystals, Optical spheres, Acoustics, Ultrasonography, Dielectrics, Wave propagation, Gold, Electrodes, Space reconnaissance, Lithium niobate

Read Abstract +

Proceedings Article | 15 March 2006 Paper

Scanning acoustic defocused transmission microscopy with vector contrast combined with holography for weak bond imaging

Evgeny Twerdowski, Moritz von Buttlar, Wolfgang Grill

Proceedings Volume 6177, 617718 (2006) https://doi.org/10.1117/12.657881

KEYWORDS: Semiconducting wafers, Holography, Ultrasonography, Microscopy, Interfaces, Acoustics, Wafer bonding, Transducers, Wave propagation, Nondestructive evaluation

Read Abstract +

Proceedings Article | 15 March 2006 Paper

Ultrasonic monitoring for directional solidification experiments onboard of the International Space Station

Moritz von Buttlar, Evgeny Twerdowski, Michael Schmachtl, Stefan Knauth, Wolfgang Grill

Proceedings Volume 6177, 617702 (2006) https://doi.org/10.1117/12.657904

KEYWORDS: Laser imaging, Solids, Ultrasonography, Transducers, Waveguides, Interfaces, Ultrasonics, Acoustics, Diagnostics, Materials science

Read Abstract +

Proceedings Article | 15 March 2006 Paper

Acoustic holography of piezoelectric materials by Coulomb excitation

A. Habib, E. Twerdowski, M. von Buttlar, M. Pluta, M. Schmachtl, R. Wannemacher, W. Grill

Proceedings Volume 6177, 61771A (2006) https://doi.org/10.1117/12.657895

KEYWORDS: Crystals, Acoustics, Lithium niobate, Wave propagation, Phonons, Ultrasonography, Acoustic holography, Holograms, Holography, Optical spheres

Read Abstract +

Proceedings Article | 9 May 2005 Paper

NDT of wafer direct bonding by non-confocal transmission phase sensitive acoustic microscopy

Evgeny Twerdowski, Reinhold Wannemacher, Axel Schindler, Nasser Razek, Wolfgang Grill

Proceedings Volume 5768, (2005) https://doi.org/10.1117/12.599758

KEYWORDS: Semiconducting wafers, Acoustics, Interfaces, Wafer bonding, Microscopy, Point spread functions, Ultrasonics, Transducers, Silicon, Nondestructive evaluation

Read Abstract +

Showing 5 of 11 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years