Metallic nanomaterials have mechanical flexibility characteristics and are used as electrodes in the flexible electronics field. Why does Metallic nanomaterials (nanoparticle, nanowire) have mechanical flexibility? In addition, please provide a reference to the mechanism.
Happy new year
Sangmok Kim, Metallic nanomaterials like silver nanoparticles and silver nanowires exhibit remarkable mechanical flexibility due to their small size, high surface-to-volume ratio, and elongated geometry. Nanowires' small size and high aspect ratio enhance their flexibility, allowing them to bend and conform to various shapes without breaking while maintaining electrical conductivity due to their uniaxial alignment. The crystalline structure of nanomaterials, with their high defect density and twin boundaries, allows for elastic deformation and crack propagation, absorbing stress and guaranteeing structural integrity.
Nanoparticles and nanowires interact through weak van der Waals forces, enabling elastic deformation and recovery. Polymer matrix embedding enhances flexibility and prevents localized fracture in flexible electronics applications.
- Gunawidjaja, Ray, Chaoyang Jiang, Sergiy Peleshanko, Maryna Ornatska, Srikanth Singamaneni, and Vladimir V. Tsukruk. "Flexible and robust 2D arrays of silver nanowires encapsulated within freestanding layer‐by‐layer films." Advanced Functional Materials 16, no. 15 (2006): 2024-2034.
- Lu, Haifei, Di Zhang, Xingang Ren, Jian Liu, and Wallace CH Choy. "Selective growth and integration of silver nanoparticles on silver nanowires at room conditions for transparent nano-network electrode." Acs Nano 8, no. 10 (2014): 10980-10987.
- Zhang, Lu, Tingting Song, Lianxu Shi, Nan Wen, Zijian Wu, Caiying Sun, Dawei Jiang, and Zhanhu Guo. "Recent progress for silver nanowires conducting film for flexible electronics." Journal of nanostructure in chemistry 11, no. 3 (2021): 323-341.
I hope this helps. Best wishes for the new year!
Alvena Shahid Thank you for your kind reply.
Can you provide a reference for the mentioned "Metallic nanomaterials like silver nanoparticles and silver nanowires exhibit remarkable mechanical flexibility due to their small size, high surface-to-volume ratio, and elongated geometry."
Specifically, we need a reason and reference to have mechanical flexibility with small size and high surface area ratio.
Also, "The crystalline structure of nanomaterials, with their high defect density and twin boundaries, allows for elastic deformation and crack propagation, absorbing stress and guaranteeing structural integrity." I don't understand this sentence well.
thank you.
Sangmok Kim Here is reference: Peng, Peng, Anming Hu, Adrian P. Gerlich, Guisheng Zou, Lei Liu, and Y. Norman Zhou. "Joining of silver nanomaterials at low temperatures: processes, properties, and applications." ACS applied materials & interfaces 7, no. 23 (2015): 12597-12618.
It means The way atoms are arranged in tiny materials, which often have lots of flaws and boundaries, allows them to stretch and crack a little bit when stressed. This takes some of the pressure off and stops them from breaking completely.
Alvena Shahid "Peng, Peng, Anming Hu, Adrian P. Gerlich, Guisheng Zou, Lei Liu, and Y. Norman Zhou. "Joining of silver nanomaterials at low temperatures: processes, properties, and applications." ACSapplied materials & interfaces 7, no. 23 (2015): 12597-12618." does not seem to explain the reason why nanomaterials have flexibility.
Which part did you think nanomaterials have flexibility depending on small size and high surface ratio?
Sangmok Kim Nano-flexibility, resulting from their tiny size and large surface area, is mentioned in the introduction.
Alvena Shahid "It is well-known that, as the size range transitions to the nanoscale, higher specific surface energy and increasing surface-to-volume ratio in the nanostructured materials enhances their sensitivity to heat."
However, I wonder how the surface-to-volme ratio affects the flexibility of nanoparticles.
In other words, we are wondering why and the mechanism by which the high surface area ratio of nanoparticles improves their flexibility.
- Badges
- Science topic
- Similar topics
- Physical Sciences
- Materials Science
- Plating