nanowall network
Recently Published Documents


TOTAL DOCUMENTS

33
(FIVE YEARS 1)

H-INDEX

11
(FIVE YEARS 0)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Danish Shamoon ◽  
Kishor Upadhyaya ◽  
Sonnada M. Shivaprasad

AbstractScaling-down the size of semiconductor cavity lasers and engineering their electromagnetic environment in the Purcell regime can bring about spectacular advance in nanodevices fabrication. We report here an unprecedented observation of a coherent Cathodoluminescence from GaN nanocavities (20–100 nm). Incident lower energy (< 15 kV) electron beams excite the band edge UV emission from the walls of the network whereas for higher energies, the emitted photons are spontaneously down converted into NIR and preferentially emerge from the nanocavities. Non-centrosymmetric structure of GaN and its nanowall geometry together facilitate this unique observation which is substantiated by our numerical results. At cryogenic temperatures, an intense and narrow laser-like NIR beam emanates out of the nanocavities. The work promises the possibility of fabrication of very high density (over 108/cm2) cavity lasers that are addressable by simple deflection and tuning of incident electron beams.



2020 ◽  
Vol 45 (1) ◽  
pp. 103-111 ◽  
Author(s):  
Pooja Devi ◽  
Anupma Thakur ◽  
Dibyendu Ghosh ◽  
E. Senthil Prasad ◽  
S.M. Shivaprasad ◽  
...  


2020 ◽  
Vol 7 (3) ◽  
pp. 793-802 ◽  
Author(s):  
Dan Zhang ◽  
Lan Wang ◽  
Hehua Zeng ◽  
Baker Rhimi ◽  
Chuanyi Wang

An environmental-friendly polyethyleneimine functionalized chitosan–lignin composite sponge with interconnected nanowall-network structures is feasibly fabricated for rapidly and selectively removing Hg(ii) ions from aqueous solution.









RSC Advances ◽  
2019 ◽  
Vol 9 (49) ◽  
pp. 28554-28560 ◽  
Author(s):  
Kishor Upadhyaya ◽  
Sharvani S ◽  
Narasimha Ayachit ◽  
S. M. Shivaprasad

The optical properties and electronic band structure of Ag nanoparticles dispersed on a GaN nanowall network were studied. High metal like surface conductivity was revealed, and charge transfer between Ag and GaN was involved in the enhancement of Raman signals.



2018 ◽  
Vol 13 (1) ◽  
Author(s):  
Aihua Zhong ◽  
Ping Fan ◽  
Yuanting Zhong ◽  
Dongping Zhang ◽  
Fu Li ◽  
...  
Keyword(s):  


2018 ◽  
Vol 123 (1) ◽  
pp. 014302 ◽  
Author(s):  
Sanjay Nayak ◽  
Rajendra Kumar ◽  
S. M. Shivaprasad


2018 ◽  
Vol 6 (2) ◽  
pp. 380-387 ◽  
Author(s):  
Palani Prabakaran ◽  
Sitakanta Satapathy ◽  
Edamana Prasad ◽  
Sethuraman Sankararaman

Highly stabilized molecular interactions and bulk transport characteristics are achieved through the synthesis of an ultrathin 2D nanowall network of pyrediyne.



Sign in / Sign up

Export Citation Format

Share Document