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学者姓名:邵金友

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Nanoimprinting metal-containing nanoparticle-doped gratings to enhance the polarization of light-emitting chips by induced scattering EI SCIE PubMed
期刊论文 | 2021 , 32 (23) | NANOTECHNOLOGY
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Abstract :

Polarized radiative luminous semiconductor chips have huge application potential in many highly value-added fields. The integration of a subwavelength grating is recognized to be the most promising method for the development of polarized chips, but still faces the challenge of low polarized radiative performance. This paper describes a proposal for, and the development of, a scattering-induced enhanced-polarization light-emitting diode chip by directly nanoimprinting a metal-containing nanoparticle-doped grating onto the top surface of a common flip chip. The rate at which quantum-well light emission is used by the developed polarized chip is improved by more than 30%. More attractively, the doped scattering nanoparticles function as a scattering-induced polarization state converter that is sandwiched in between the top aluminum grating and the bottom silver reflector of the chips. The originally non-radiated light, with an electric-field vector parallel to the grating lines, is reflected back and forth inside the sandwich until it changes to the perpendicular vibration mode and is radiated outside the chip. Therefore, the polarization extinction ratio is greatly improved, compared to undoped samples.

Keyword :

polarization conversion nanoimprint subwavelength grating light-emitting chips scattering

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GB/T 7714 Wang, Chunhui , Lai, Dengshui , Fan, Yu et al. Nanoimprinting metal-containing nanoparticle-doped gratings to enhance the polarization of light-emitting chips by induced scattering [J]. | NANOTECHNOLOGY , 2021 , 32 (23) .
MLA Wang, Chunhui et al. "Nanoimprinting metal-containing nanoparticle-doped gratings to enhance the polarization of light-emitting chips by induced scattering" . | NANOTECHNOLOGY 32 . 23 (2021) .
APA Wang, Chunhui , Lai, Dengshui , Fan, Yu , Tian, Hongmiao , Li, Xiangming , Chen, Xiaoliang et al. Nanoimprinting metal-containing nanoparticle-doped gratings to enhance the polarization of light-emitting chips by induced scattering . | NANOTECHNOLOGY , 2021 , 32 (23) .
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Channel-Crack-Designed Suspended Sensing Membrane as a Fully Flexible Vibration Sensor with High Sensitivity and Dynamic Range EI SCIE PubMed
期刊论文 | 2021 , 13 (29) , 34637-34647 | ACS APPLIED MATERIALS & INTERFACES
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Abstract :

Vibration sensors are essential for signal acquisition, motion measuring, and structural health evaluations in civil and industrial applications. However, the mechanical brittleness and complicated installation process of micro-electromechanical system vibration sensors block their applications in wearable devices and human-machine interaction. The development of flexible vibration sensors satisfying the requirements of good flexibility, high sensitivity, and the ability to attach conformably on curved critical components is highly demanded but still remains a challenge. Here, we demonstrate a highly sensitive and fully flexible vibration sensor with a channel-crack-designed suspended sensing membrane for high dynamic vibration and acceleration monitoring. The flexible sensor is designed as a suspended vibration membrane structure by bonding a channel-crack-sensing membrane on a cavity substrate, of which the suspended sensing membrane can freely vibrate out of plane under external vibration. By inducing the cracks to be generated in the embedded multiwalled carbon nanotube channels and fully cracked across the conducting routes, the suspended vibration membrane shows high sensitivity, good reproducibility, and robust sensing stability. The resultant vibration sensor demonstrates an ultrawide frequency vibration response range from 0.1 to 20,000 Hz and exhibits the ability to respond to acceleration vibration with a broad response of 0.24-100 m/s(2). The high sensitivity, wide bandwidth, and fully flexible format of the vibration sensor enable it to be directly attached on human bodies and curvilinear surfaces to conduct in situ vibration sensing, which was demonstrated by motion detection, voice identification, and the vibration monitoring of mechanical equipment.

Keyword :

flexible sensor vibration sensor cracks strain sensor acceleration monitoring suspended membrane

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GB/T 7714 Chen, Xiaoliang , Zeng, Qian , Shao, Jinyou et al. Channel-Crack-Designed Suspended Sensing Membrane as a Fully Flexible Vibration Sensor with High Sensitivity and Dynamic Range [J]. | ACS APPLIED MATERIALS & INTERFACES , 2021 , 13 (29) : 34637-34647 .
MLA Chen, Xiaoliang et al. "Channel-Crack-Designed Suspended Sensing Membrane as a Fully Flexible Vibration Sensor with High Sensitivity and Dynamic Range" . | ACS APPLIED MATERIALS & INTERFACES 13 . 29 (2021) : 34637-34647 .
APA Chen, Xiaoliang , Zeng, Qian , Shao, Jinyou , Li, Sheng , Li, Xiangming , Tian, Hongmiao et al. Channel-Crack-Designed Suspended Sensing Membrane as a Fully Flexible Vibration Sensor with High Sensitivity and Dynamic Range . | ACS APPLIED MATERIALS & INTERFACES , 2021 , 13 (29) , 34637-34647 .
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Scalable Imprinting of Flexible Multiplexed Sensor Arrays with Distributed Piezoelectricity-Enhanced Micropillars for Dynamic Tactile Sensing EI SCIE
期刊论文 | 2020 , 5 (7) | ADVANCED MATERIALS TECHNOLOGIES | IF: 7.848
WoS CC Cited Count: 12
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Abstract :

The ongoing revolution of human-robot interactions and electronic skins has created new requirements for tactile sensors, including good mechanical flexibility, high sensitivity, and the availability of distributed pixels for detecting force distribution. Here, a highly sensitive flexible sensor array based on piezoelectricity-enhanced vertically aligned P(VDF-TrFE) micropillars is developed for dynamic tactile sensing. The core piezoelectric sensing micropillars are fabricated using a straightforward and scalable nanoimprinting technology and then sandwiched between a pair of cross electrode arrays to construct multiplexed sensor arrays. Due to the proposed structural design and nanoimprinting methodology, the sensor pixels exhibit uniform output generation, robust output stability, and scalable fabrication ability. In addition, taking advantage of the high compressibility and enhanced strain of the piezoelectric micropillars compared to planar films, the microstructured sensors show an enhanced sensitivity of 228.2 mV N-1 and a highly linear response to loads. By integrating the flexible sensor with a portable signal processing circuit, a complete tactile sensing system is successfully developed to provide clear intuitive user interfaces. The good flexibility and robust stability of the sensor arrays enable them to be attached onto curved surface for real-time tracking of dynamic force and imaging the force distribution.

Keyword :

flexible sensor arrays piezoelectricity nanoimprinting micropillars tactile sensors

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GB/T 7714 Chen, Xiaoliang , Shao, Jinyou , Tian, Hongmiao et al. Scalable Imprinting of Flexible Multiplexed Sensor Arrays with Distributed Piezoelectricity-Enhanced Micropillars for Dynamic Tactile Sensing [J]. | ADVANCED MATERIALS TECHNOLOGIES , 2020 , 5 (7) .
MLA Chen, Xiaoliang et al. "Scalable Imprinting of Flexible Multiplexed Sensor Arrays with Distributed Piezoelectricity-Enhanced Micropillars for Dynamic Tactile Sensing" . | ADVANCED MATERIALS TECHNOLOGIES 5 . 7 (2020) .
APA Chen, Xiaoliang , Shao, Jinyou , Tian, Hongmiao , Li, Xiangming , Wang, Chunhui , Luo, Yongsong et al. Scalable Imprinting of Flexible Multiplexed Sensor Arrays with Distributed Piezoelectricity-Enhanced Micropillars for Dynamic Tactile Sensing . | ADVANCED MATERIALS TECHNOLOGIES , 2020 , 5 (7) .
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Edge-effect-mediated microfluidics for fabrication of microporous membrane with well-defined size and shape EI SCIE Scopus
期刊论文 | 2019 , 29 (3) | JOURNAL OF MICROMECHANICS AND MICROENGINEERING
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Abstract :

Microporous membranes of well-defined porous size, shape, and distribution are significantly important for environmental engineering and biomedical treatment applications, where high-throughput precise filtration is required. However, efficient manufacturing of desired microporous membranes remains a great challenge. In this study, an cost-effective method, based on edge-effect-mediated microfluidics, is proposed for the fabrication of polymeric microsieves with well-defined micropore arrays. This method refers to a lateral spreading of a liquid prepolymer between the protruding parts of a template and the flat surface of a substrate. The edge effect enables the liquid prepolymer to bypass, instead of filling the microholes of the template. Based on the proposed method, two types of monodisperse SiO2 microspheres were separated by solution filtration.

Keyword :

microchannels microfluidics wettability edge effect fabrication micropore

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GB/T 7714 Jiang, Chengbao , Li, Xiangming , Shao, Jinyou et al. Edge-effect-mediated microfluidics for fabrication of microporous membrane with well-defined size and shape [J]. | JOURNAL OF MICROMECHANICS AND MICROENGINEERING , 2019 , 29 (3) .
MLA Jiang, Chengbao et al. "Edge-effect-mediated microfluidics for fabrication of microporous membrane with well-defined size and shape" . | JOURNAL OF MICROMECHANICS AND MICROENGINEERING 29 . 3 (2019) .
APA Jiang, Chengbao , Li, Xiangming , Shao, Jinyou , Tian, Hongmiao , Li, Xiangmeng , Zhang, Jihang . Edge-effect-mediated microfluidics for fabrication of microporous membrane with well-defined size and shape . | JOURNAL OF MICROMECHANICS AND MICROENGINEERING , 2019 , 29 (3) .
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Gecko‐Effect Inspired Soft Gripper with High and Switchable Adhesion for Rough Surfaces EI SCIE Scopus
期刊论文 | 2019 , 6 (18) , 1900875 | ADVANCED MATERIALS INTERFACES
WoS CC Cited Count: 7 SCOPUS Cited Count: 8
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Abstract :

Geckos, which can walk upside down on smooth or rough surfaces, owe this ability to the hierarchical structures under their toes. These structures are responsible for substantial adhesion and, at the same time, for quick attachment/detachment by mechanical stimulus of toe muscles. Inspired by such stimuli-responsive systems in nature, an active adhesive soft gripper for rough surfaces is proposed in this study, consisting of the mushroom-like morphology acting as adhesive structures and the pressure controllable deformation working as toe muscles. Through tunable pressure, the adhesive force can be increased and reduced by roughly 20-fold for a ground glass, in which it can quickly reach high adhesion with positive pressure and reduce to small adhesion under negative pressure. This gecko inspired soft gripper is tested and found successful as a pick-up and drop-down system for transporting a surface with different features, composed of rough acrylic plate, steel ball, flexible photo paper, heavy glass block/plate, etc., which will have great potential for applications in industrial line and daily life as well as providing a novel perspective for the design of soft grippers.

Keyword :

active adhesive gecko-effect adhesion rough surfaces soft gripper tunable pressure

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GB/T 7714 Tian, HM , Li, XM , Shao, JY et al. Gecko‐Effect Inspired Soft Gripper with High and Switchable Adhesion for Rough Surfaces [J]. | ADVANCED MATERIALS INTERFACES , 2019 , 6 (18) : 1900875 .
MLA Tian, HM et al. "Gecko‐Effect Inspired Soft Gripper with High and Switchable Adhesion for Rough Surfaces" . | ADVANCED MATERIALS INTERFACES 6 . 18 (2019) : 1900875 .
APA Tian, HM , Li, XM , Shao, JY , Wang, C , Wang, Y , Tian, YZ et al. Gecko‐Effect Inspired Soft Gripper with High and Switchable Adhesion for Rough Surfaces . | ADVANCED MATERIALS INTERFACES , 2019 , 6 (18) , 1900875 .
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Multilayered Dual Functional SiO2@Au@SiO2@QD Nanoparticles for Simultaneous Intracellular Heating and Temperature Measurement EI SCIE Scopus Pubmed
期刊论文 | 2019 , 35 (19) , 6367-6378 | LANGMUIR
WoS CC Cited Count: 7
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Abstract :

This paper discusses synthesis and application of dual functional SiO2@Au@SiO2@QD composite nanoparticles for integrated intracellular heating with temperature motoring. The particles are of multilayered concentric structure, consisting of Au nanoshells covered with quantum dots, with the former for infrared heating through localized surface plasma resonance while the later for temperature monitoring. The key to integrate plasmonic-heating/thermal-monitoring on a single composite nanoparticle is to ensure that the quantum dots be separated at a certain distance away from the Au shell surface in order to ensure a detectable quantum yield. Direct attachment of the quantum dots onto the Au shell would render the quantum dots practically functionless for temperature monitoring. To integrate quantum dots into Au nanoshells, a quantum quenching barrier of SiO2 was created by modifying a Stober-like process. Materials, optical and thermal characterization was made of these composite nanoparticles. Cellular uptake of the nanoparticles was discussed. Experiments were performed on simultaneous in vitro heating and temperature monitoring in a cell internalized with the dual-functional SiO2@Au@SiO2@QD composite nanoparticles.

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GB/T 7714 Jiang, XB , Li, BQ , Qu, XL et al. Multilayered Dual Functional SiO2@Au@SiO2@QD Nanoparticles for Simultaneous Intracellular Heating and Temperature Measurement [J]. | LANGMUIR , 2019 , 35 (19) : 6367-6378 .
MLA Jiang, XB et al. "Multilayered Dual Functional SiO2@Au@SiO2@QD Nanoparticles for Simultaneous Intracellular Heating and Temperature Measurement" . | LANGMUIR 35 . 19 (2019) : 6367-6378 .
APA Jiang, XB , Li, BQ , Qu, XL , Yang, H , Shao, JY , Zhang, HM . Multilayered Dual Functional SiO2@Au@SiO2@QD Nanoparticles for Simultaneous Intracellular Heating and Temperature Measurement . | LANGMUIR , 2019 , 35 (19) , 6367-6378 .
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Suspended-Template Electric-Assisted Nanoimprinting for Hierarchical Micro-Nanostructures on a Fragile Substrate EI SCIE Scopus PubMed
期刊论文 | 2019 , 13 (9) , 10333-10342 | ACS NANO
WoS CC Cited Count: 8 SCOPUS Cited Count: 9
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Abstract :

Coating hierarchical micro-nanostructures on the surface of optoelectronic devices has been demonstrated to improve the overall performance. However, fabricating desired structures on a fragile optoelectronic device substrate is still challenging. A suspended-template electric-assisted nanoimprinting technique is proposed herein to controllably fabricate hierarchical micro-nanostructures on a fragile substrate. The suspension design of the template ensures that it conveniently deforms to fully fit the surface fluctuation of the substrate. The deformation of template and the filling of liquid polymer in the micro/nanocavities of the template are both driven by the powerful surface/interface force generated by an electric field applied between the template and substrate surface, thus protecting the fragile substrate from squeezing damage. Different morphologies of hierarchical micro-nanostructures are fabricated by changing the electric field Based on suspended-template electric-assisted nanoimprinting, the environmentally adaptable fully covering hierarchical micro-nanostructures are encapsulated on the surface of flip-film light-emitting diode chips, thus significantly enhancing their light management in complex environments.

Keyword :

hierarchical micro-nanostructures suspension design nanoimprint LED electric field assisted

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GB/T 7714 Wang, Chunhui , Shao, Jinyou , Lai, Dengshui et al. Suspended-Template Electric-Assisted Nanoimprinting for Hierarchical Micro-Nanostructures on a Fragile Substrate [J]. | ACS NANO , 2019 , 13 (9) : 10333-10342 .
MLA Wang, Chunhui et al. "Suspended-Template Electric-Assisted Nanoimprinting for Hierarchical Micro-Nanostructures on a Fragile Substrate" . | ACS NANO 13 . 9 (2019) : 10333-10342 .
APA Wang, Chunhui , Shao, Jinyou , Lai, Dengshui , Tian, Hongmiao , Li, Xiangming . Suspended-Template Electric-Assisted Nanoimprinting for Hierarchical Micro-Nanostructures on a Fragile Substrate . | ACS NANO , 2019 , 13 (9) , 10333-10342 .
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Flexible Capacitive Pressure Sensor Enhanced by Tilted Micropillar Arrays EI SCIE Scopus Pubmed
期刊论文 | 2019 , 11 (19) , 17796-17803 | ACS APPLIED MATERIALS & INTERFACES
WoS CC Cited Count: 77 SCOPUS Cited Count: 69
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Abstract :

Sensitivity of the sensor is of great importance in practical applications of wearable electronics or smart robotics. In the present study, a capacitive sensor enhanced by a tilted micropillar array-structured dielectric layer is developed. Because the tilted micropillars undergo bending deformation rather than compression deformation, the distance between the electrodes is easier to change, even discarding the contribution of the air gap at the interface of the structured dielectric layer and the electrode, thus resulting in high pressure sensitivity (0.42 kPa(-1)) and very small detection limit (1 Pa). In addition, eliminating the presence of uncertain air gap, the dielectric layer is strongly bonded with the electrode, which makes the structure robust and endows the sensor with high stability and reliable capacitance response. These characteristics allow the device to remain in normal use without the need for repair or replacement despite mechanical damage. Moreover, the proposed sensor can be tailored to any size and shape, which is further demonstrated in wearable application. This work provides a new strategy for sensors that are required to be sensitive and reliable in actual applications.

Keyword :

capacitive tilted micropillar array structures flexible; pressure sensor ultralight sensitivity

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GB/T 7714 Luo, YS , Shao, JY , Chen, SR et al. Flexible Capacitive Pressure Sensor Enhanced by Tilted Micropillar Arrays [J]. | ACS APPLIED MATERIALS & INTERFACES , 2019 , 11 (19) : 17796-17803 .
MLA Luo, YS et al. "Flexible Capacitive Pressure Sensor Enhanced by Tilted Micropillar Arrays" . | ACS APPLIED MATERIALS & INTERFACES 11 . 19 (2019) : 17796-17803 .
APA Luo, YS , Shao, JY , Chen, SR , Chen, XL , Tian, HM , Li, XM et al. Flexible Capacitive Pressure Sensor Enhanced by Tilted Micropillar Arrays . | ACS APPLIED MATERIALS & INTERFACES , 2019 , 11 (19) , 17796-17803 .
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Protective integrated transparent conductive film with high mechanical stability and uniform electric-field distribution. EI PubMed SCIE Scopus
期刊论文 | 2019 , 30 (18) | Nanotechnology | IF: 3.551
WoS CC Cited Count: 4 SCOPUS Cited Count: 4
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Abstract :

A stable and uniform electric field is to be generated even though a large mechanical deformation is the primary criterion for a transparent conductive film. This study proposes a protective integrated transparent conductive film (PITCF) including indium tin oxide (ITO), a silver nanowire (Ag NW) network, and a protective polydimethylsiloxane (PDMS) layer. A firmly bonding process of ITO/Ag NW/PDMS is established to avoid the failure of Ag NW to be oxidized by interlayer residual air or wrapped by liquid PDMS. Besides the good optical transparency, haze, and electrical conductivity as the only ITO film, the developed PITCF exhibits excellent bending resistance and mechanical stability. The ITO rupture fragments after bending deformation are firmly interconnected by the constrained Ag NWs. Even though the PITCF is bended more than 1000 cycles at a 6.5 mm bending distance, the changes in electrical resistance of PITCF are below 9.7%. Finally, an electroluminescent device with high bending resistance and uniform and high luminance is developed based on the designed PITCF.

Keyword :

ITO integrated electrode Ag NWs transparent conductive film

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GB/T 7714 Wang Chunhui , Shao Jinyou , Tian Hongmiao et al. Protective integrated transparent conductive film with high mechanical stability and uniform electric-field distribution. [J]. | Nanotechnology , 2019 , 30 (18) .
MLA Wang Chunhui et al. "Protective integrated transparent conductive film with high mechanical stability and uniform electric-field distribution." . | Nanotechnology 30 . 18 (2019) .
APA Wang Chunhui , Shao Jinyou , Tian Hongmiao , Li Xiangming . Protective integrated transparent conductive film with high mechanical stability and uniform electric-field distribution. . | Nanotechnology , 2019 , 30 (18) .
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Hybrid Nanostructure of SiO2@Si with Au-Nanoparticles for Surface Enhanced Raman Spectroscopy EI SCIE Scopus Pubmed
期刊论文 | 2019 , 11 (28) , 13484-13493 | NANOSCALE | IF: 6.895
WoS CC Cited Count: 7 SCOPUS Cited Count: 8
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In this study, a structure of large-area orderly-arranged SiO2@Si core-shell nanoparticles decorated with Au nanoparticles was fabricated for surface-enhanced Raman spectroscopy (SERS). This hybrid structure features light confinement in the Si shells and a uniform distribution of localized electric hot spots. FDTD simulations were carried out to examine the near-field enhancement response of this structure. Results indicate that the strongly enhanced local electric field is attributed to the WGM-LSPR coupling, that is, the coupling of the whispering gallery mode (WGM) of Si nanoshells with the localized surface plasmon resonance (LSPR) of Au nanoparticles. The excitation of WGM comes primarily from the magnetic response of the Si shell with a minor modification by its electric response. The WGM-LSPR coupling of the structure is tunable through the change of geometric parameters of SiO2@Si particles. Raman scattering measurements were conducted on the samples fabricated, which agree well with the simulated results. The measured data gave a SERS G factor of similar to 2 x 10(8) and showed highly sensitive and reproducible SERS signals of R6G with a high spatial uniformity on a 2 x 2 cm(2) substrate consisting of an array of SiO2@Si (D = similar to 220 nm/290 nm) particles whose outer surfaces were scattered with d = similar to 20 nm Au particles.

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GB/T 7714 Yang, H , Li, BQ , Jiang, XB et al. Hybrid Nanostructure of SiO2@Si with Au-Nanoparticles for Surface Enhanced Raman Spectroscopy [J]. | NANOSCALE , 2019 , 11 (28) : 13484-13493 .
MLA Yang, H et al. "Hybrid Nanostructure of SiO2@Si with Au-Nanoparticles for Surface Enhanced Raman Spectroscopy" . | NANOSCALE 11 . 28 (2019) : 13484-13493 .
APA Yang, H , Li, BQ , Jiang, XB , Shao, JY . Hybrid Nanostructure of SiO2@Si with Au-Nanoparticles for Surface Enhanced Raman Spectroscopy . | NANOSCALE , 2019 , 11 (28) , 13484-13493 .
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