ד"ר יונתן קלהורה

Academic

Awards:

See full list on my Google Scholar page“Time-resolved open-circuit conductive atomic force microscopy for direct electromechanical characterization”; Y Calahorra, W Kim, J Vukajlovic-Plestina, A Fontcuberta i Morral, Sohini Kar-Narayan, Nanotechnology, invited (Special Issue on Nanowires) 2020

https://doi.org/10.1088/1361-6528/ab9b4b

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“Strain-Mediated Bending of InP Nanowires through the Growth of an Asymmetric InAs Shell”; Y Greenberg, A Kelrich, S Cohen, S Kar-Narayan, D Ritter, Y Calahorra, Nanomaterials 2019

https://doi.org/10.3390/nano9091327

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“Highly sensitive piezotronic pressure sensors based on undoped GaAs nanowire ensembles”; Y Calahorra*, A Husmann*, A Bourdelain, W Kim, J Vukajlovic-Plestina, C Boughey, Q Jing, A Fontcuberta i Morral, Sohini Kar-Narayan, Journal of Applied Physics D, 2019

https://doi.org/10.1088/1361-6463/ab1386

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“Nanoscale electromechanical properties of hierarchically self-assembled cellulose nanofibers”; Y Calahorra*, A Datta*, J Famelton, D Kam, O Shoseyov, S Kar-Narayan, Nanoscale 2018

https://doi.org/10.1039/c8nr04967j

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“Mapping piezoelectric response in nanomaterials using a dedicated non destructive scanning probe technique”; Y Calahorra, M Smith, A Datta, H Benisty, S Kar-Narayan, Nanoscale 2017

http://pubs.rsc.org/en/content/articlehtml/2017/nr/c7nr06714c

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“Exploring piezoelectric properties of III-V nanowires using piezo-response force microscopy”; Y Calahorra, X Guan, NN Halder, M Smith, S Cohen, D Ritter, J Penuelas, S Kar-Narayan, Semiconductor Science and Technology (Special Issue on Piezotronics) 2017

http://iopscience.iop.org/article/10.1088/1361-6641/aa6c85

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“Localized electromechanical interactions in ferroelectric P(VDF-TrFE) nanowires investigated by scanning probe microscopy”; Y Calahorra, R A Whiter, Q Jing, V Narayan, S Kar-Narayan, APL Materials 2016
http://aip.scitation.org/doi/abs/10.1063/1.4967752

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“Young’s Modulus, Residual Stress, and Crystal Orientation of Doubly Clamped Silicon Nanowire Beams”; Y Calahorra, O Shtempluk, V Kotchetkov, Y Yaish, Nano Letters 2015

http://pubs.acs.org/doi/abs/10.1021/nl5047939

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“On the diameter dependence of metal-nanowire Schottky barrier”; Y Calahorra, E Yalon, D Ritter, Journal of Applied Physics 2015

http://aip.scitation.org/doi/abs/10.1063/1.4906210

My research spans the whole range from basic materials properties to application, and is focused on understanding the interface between two properties, e.g. coupling between electrical and mechanical phenomena. I aim to gain fundamental knowledge about a wide range of materials to utilize in novel beneficial and desirable applications. In recent years this has taken the form of studying nanoscale piezoelectric (eletro-mechanical coupling) and magnetoelectric (magnetic-electrical coupling) properties in polymers, biomaterials and semiconductors for sensing and actuation.

In the next few years the main directions in the MEMSM lab will include:

• Exploring ways to control and enhance piezoelectricity in bio- and biocompatible materials through size down scaling and structuring
• Studying piezoelectric semiconductors in forms ranging from nanowires to porous materials
• Create composites comprised of magnetostrictive and piezoelectric materials to realize magnetoelectric materials
• Explore applications based on piezoelectric materials and/or magnetoelectric composites
• One particular goal is to create biocompatible magnetoelectric transducer devices with potential uses as biomedical devices