Electronic structure and magnetic properties of (Mn, N)-codoped ZnO

Wang, Qianjin; Wang, Jinbin; Zhong, Xiangli; Tan, Qiuhong; Liu, Yingkai

doi:10.1088/1674-1056/23/12/123101

Cited by 2 publications

(1 citation statement)

References 28 publications

(28 reference statements)

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“…Some early signs of cancer include lumps, sores that fail to heal, abnormal bleeding, persistent indigestion, and chronic hoarseness. [1,2,26,27]…”

Section: Introductionmentioning

confidence: 99%

Silicon nanowire formed via shallow anisotropic etching Si-ash-trimming for specific DNA and electrochemical detection

Adam¹,

Hashim²,

Dhahi³

2015

Chinese Phys. B

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A functionalized silicon nanowire field-effect transistor (SiNW FET) was fabricated to detect single molecules in the pM range to detect disease at the early stage with a sensitive, robust, and inexpensive method with the ability to provide specific and reliable data. The device was designed and fabricated by indented ash trimming via shallow anisotropic etching. The approach is a simple and low-cost technique that is compatible with the current commercial semiconductor standard CMOS process without an expensive deep reactive ion etcher. Specific electric changes were observed for DNA sensing when the nanowire surface was modified with a complementary captured DNA probe and target DNA through an organic linker (–OCH2CH3) using organofunctional alkoxysilanes (3-aminopropyl) triethoxysilane (APTES). With this surface modification, a single specific target molecule can be detected. The simplicity of the sensing domain makes it feasible to miniaturize it for the development of a cancer detection kit, facilitating its use in both clinical and non-clinical environments to allow non-expert interpretation. With its novel electric response and potential for mass commercial fabrication, this biosensor can be developed to become a portable/point of care biosensor for both field and diagnostic applications.

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“…Some early signs of cancer include lumps, sores that fail to heal, abnormal bleeding, persistent indigestion, and chronic hoarseness. [1,2,26,27]…”

Section: Introductionmentioning

confidence: 99%

Silicon nanowire formed via shallow anisotropic etching Si-ash-trimming for specific DNA and electrochemical detection

Adam¹,

Hashim²,

Dhahi³

2015

Chinese Phys. B

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Theoretical study of the effects of Mn: N ratios on electronic structure and magnetic properties of (Mn, N)-codoped ZnO

Wang

2019

Int. J. Mod. Phys. B

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(Mn, N)-codope is an effective method to achieve both magnetism and p-type stability of ZnO system. In this paper, the magnetism and the p-type stability of (Mn, N)-codoped ZnO with the ratios of 1:1, 1:2 and 2:1 were analyzed through establishing a (2 × 2 × 2) ZnO supercell, in which Zn site was replaced by Mn atom and O site was replaced by N atom. The results of electronic structure analysis show that (Mn, N)-codope is easier to form stable p-type ZnO in comparison to N-mono dope. The p-d coupling between Mn 3d and N 2p states weakens the repulsive force between ions under (Mn, N)-codope condition and results in stable p-type. Especially, the (Mn, N)-codoped ZnO with 2:1 ratio has lower formation energy and higher p-type stability. Furthermore, the results of magnetic analysis also show that the (Mn, N)-codoped ZnO system with 2:1 ratio has higher total magnetic moment than 1:1 and 1:2. A significant ferromagnetic coupling raised by strong p-d interaction between Mn 3d and N 2p in the Mn-N-Mn complex is responsible for these results. However, high N doping ratio is not beneficial to the enhancement of ferromagnetism and p-type stability.

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Electronic structure and magnetic properties of (Mn, N)-codoped ZnO

Abstract: Electronic structure and magnetic properties of (Mn, N)-codoped ZnO *Wang Qian-Jin(王前进) a) , Wang Jin-Bin(王金斌) b) † , Zhong Xiang-Li(钟向丽) b) , Tan Qiu-Hong(谭秋红) a) , and Liu Ying-Kai(刘应开) a) a)

Cited by 2 publications

References 28 publications

Silicon nanowire formed via shallow anisotropic etching Si-ash-trimming for specific DNA and electrochemical detection

Silicon nanowire formed via shallow anisotropic etching Si-ash-trimming for specific DNA and electrochemical detection

Theoretical study of the effects of Mn: N ratios on electronic structure and magnetic properties of (Mn, N)-codoped ZnO

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