Enhanced piezoelectric properties of vertically aligned single-crystalline NKN nano-rod arrays

Min Gyu Kang, Seung Min Oh, Woo Suk Jung, Hi Gyu Moon, Seung Hyub Baek, Sahn Nahm, Seok Jin Yoon, Chong Yun Kang

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


Piezoelectric materials capable of converting between mechanical and electrical energy have a great range of potential applications in micro- and nano-scale smart devices; however, their performance tends to be greatly degraded when reduced to a thin film due to the large clamping force by the substrate and surrounding materials. Herein, we report an effective method for synthesizing isolated piezoelectric nano-materials as means to relax the clamping force and recover original piezoelectric properties of the materials. Using this, environmentally friendly single-crystalline Na x K 1-x NbO 3 (NKN) piezoelectric nano-rod arrays were successfully synthesized by conventional pulsed-laser deposition and demonstrated to have a remarkably enhanced piezoelectric performance. The shape of the nano-structure was also found to be easily manipulated by varying the energy conditions of the physical vapor. We anticipate that this work will provide a way to produce piezoelectric micro- and nano-devices suitable for practical application, and in doing so, open a new path for the development of complex metal-oxide nano-structures.

Original languageEnglish (US)
Article number10151
JournalScientific reports
StatePublished - May 8 2015

All Science Journal Classification (ASJC) codes

  • General


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