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  • AIP Publishing  (10)
  • 1
    Online Resource
    Online Resource
    Formation and optical absorption property of nanometer metallic colloids in Zn and Ag dually implanted silica: Synthesis of the modified Ag nanoparticles
    AIP Publishing ; 2013
    In:  Journal of Applied Physics Vol. 113, No. 3 ( 2013-01-21)
    Details
    In: Journal of Applied Physics, AIP Publishing, Vol. 113, No. 3 ( 2013-01-21)
    Abstract: Nanometer metallic colloids in silica glasses were fabricated by dual implantation of Zn and Ag ions in different implantation sequences. In the case of Zn ions followed by Ag ions, Ag nanoparticles (NPs) were formed, which had small size, narrow size distribution and high volume fraction, as well as modified dielectric environment. As a result, the Zn first and then Ag implanted samples presented an intense absorption peak around 435 nm, which was much stronger than that at about 406 nm detected in the Ag singly implanted specimen at the same Ag ion fluence. Variation of Zn ion fluence only gave rise to slight change of the absorption signal. In contrast, a dual implantation of Ag first and then Zn ions resulted in formation of Ag, Zn, and Ag–Zn alloy NPs, consequently inducing a weak and broad absorption band lying between those related to monometallic Ag and Zn NPs. The underlying mechanisms for the above findings were discussed. Especially, an enhanced deposition process of Ag implants caused by the prior Zn implantation was proposed.
    Type of Medium: Online Resource
    ISSN: 0021-8979 , 1089-7550
    URL: Article
    DOI: 10.1063/1.4775820
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2013
    detail.hit.zdb_id: 220641-9
    detail.hit.zdb_id: 3112-4
    detail.hit.zdb_id: 1476463-5
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  • 2
    Online Resource
    Online Resource
    A U-shaped microwave resonator for flexible mechanical sensors application
    AIP Publishing ; 2019
    In:  Review of Scientific Instruments Vol. 90, No. 11 ( 2019-11-01)
    Details
    In: Review of Scientific Instruments, AIP Publishing, Vol. 90, No. 11 ( 2019-11-01)
    Abstract: A flexible mechanical deformation test system, which is a combination of the microwave and the flexible film, is proposed. The system consists of a U-shaped microwave resonator, coaxial transmission line, and PDMS flexible substrate. Microwave signals are generated from the vector network analyzer and loaded to the coaxial transmission line and then coupled to the U-shaped resonator through the coupling loop. The resonator works at the gigahertz band with the test range from 3 GHz to 40 GHz. The resonant frequency of the resonator can be adjusted by changing the shape of PDMS, and the related signals can be detected by using the S11 parameter of the microwave. The response time of the U-shaped resonator is less than 20 ms, and the sensitivity on the curved surface is 12.5 Hz/nm.
    Type of Medium: Online Resource
    ISSN: 0034-6748 , 1089-7623
    URL: Article
    DOI: 10.1063/1.5096420
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2019
    detail.hit.zdb_id: 209865-9
    detail.hit.zdb_id: 1472905-2
    SSG: 11
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  • 3
    Online Resource
    Online Resource
    Phonon transport through a three-dimensional abrupt junction
    AIP Publishing ; 2006
    In:  Applied Physics Letters Vol. 89, No. 16 ( 2006-10-16)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 89, No. 16 ( 2006-10-16)
    Abstract: By using the scattering matrix method, the authors investigate the transmission coefficient and thermal conductance of acoustic phonon through a three-dimensional abrupt junction at low temperatures. It is found that the transmission coefficient of long-wavelength phonon strongly depends on the geometrical parameters of the structure as the incident frequency ω→0, and there exist some dips in the transmission spectrum with an increase of incident frequency ω. In the meantime, as the temperature T→0, the thermal conductance is strongly influenced by the abrupt junction structure. These results are not in agreement with previous theoretical studies for the case of two-dimensional structure and can be used as a guideline for the thermal management of the various nanostructures.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.2362970
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2006
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
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  • 4
    Online Resource
    Online Resource
    Domain size engineering in 0.5%MnO2-(K0.5Na0.5)NbO3 lead free piezoelectric crystals
    AIP Publishing ; 2015
    In:  Journal of Applied Physics Vol. 117, No. 7 ( 2015-02-21)
    Details
    In: Journal of Applied Physics, AIP Publishing, Vol. 117, No. 7 ( 2015-02-21)
    Abstract: The piezoelectric property of [001]-oriented 0.5%MnO2-(K0.5Na0.5)NbO3 (Mn-KNN) crystals was studied as a function of domain size, being poled with different electric fields at 205 °C (above orthorhombic to tetragonal phase transition temperature To-t). The piezoelectric coefficients d33 and relative dielectric constants εr were found to increase from 270 pC/N to 350 pC/N and 730 to 850 with the domain size decreasing from 9 to 2 μm, respectively. The thermal stability of piezoelectric property was investigated, where the d33 value for [001] -oriented Mn-KNN crystals with domain size of 2 μm was found to decrease to 330 pC/N at depoling temperature of 150 °C, with minimal variation of ∼6%. The results reveal that domain size engineering is an effective way to improve the piezoelectric properties of Mn-KNN crystals.
    Type of Medium: Online Resource
    ISSN: 0021-8979 , 1089-7550
    URL: Article
    DOI: 10.1063/1.4913208
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2015
    detail.hit.zdb_id: 220641-9
    detail.hit.zdb_id: 3112-4
    detail.hit.zdb_id: 1476463-5
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  • 5
    Online Resource
    Online Resource
    Quasi-two-dimensional Ag nanoparticle formation in silica by Xe ion irradiation and subsequent Ag ion implantation
    AIP Publishing ; 2013
    In:  Applied Physics Letters Vol. 102, No. 13 ( 2013-04-01)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 102, No. 13 ( 2013-04-01)
    Abstract: Ag nanoparticles were fabricated in silica by Xe ion irradiation and subsequent Ag ion implantation, which distributed in a depth range from 4.8 to 14.3 nm, rather than dispersed from surface to a depth of 24.7 nm when no irradiation was made in advance. In addition, the suppression of Ag implants' sputtering loss was also evidenced by a greatly increased Ag content in the prepared sample. These results are mainly due to the defect-enhanced in-beam particle growth. Further, formation of polycrystalline Ag nanoparticles was revealed, whose effect on optical absorption was discussed according to the electron mean-free-path mode.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.4799175
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2013
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
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  • 6
    Online Resource
    Online Resource
    MoS2 nanosheet photodetectors with ultrafast response
    AIP Publishing ; 2017
    In:  Applied Physics Letters Vol. 111, No. 15 ( 2017-10-09)
    Details
    In: Applied Physics Letters, AIP Publishing, Vol. 111, No. 15 ( 2017-10-09)
    Abstract: Two-dimensional layered materials, such as molybdenum disulfide, are emerging as an exciting material system for future electronics due to their unique electronic properties and atomically thin geometry. In this work, MoS2-based FETs are fabricated using mechanical cleavage and standard photolithographic and metal evaporation techniques, and the detector exhibits a good ohmic contact. We show that the multilayer molybdenum disulfide photodetector has a fast photoresponse as short as 42 μs. The fast photodetector response is due to the decrease in the trap states in MoS2 flakes compared to monolayer MoS2, making its photoresponse time close to its intrinsic response. The large photocurrent with the responsivity and external quantum efficiency of 59 A/W and 13 800% for the wavelength of 532 nm was also measured. The fast response time, high responsivity, and the ease of fabrication of these devices make them important components for future optoelectronic devices.
    Type of Medium: Online Resource
    ISSN: 0003-6951 , 1077-3118
    URL: Article
    DOI: 10.1063/1.5001671
    RVK:
    UA 1000
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2017
    detail.hit.zdb_id: 211245-0
    detail.hit.zdb_id: 1469436-0
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  • 7
    Online Resource
    Online Resource
    Enhanced polarization sensitivity by plasmonic-cavity in graphene phototransistors
    AIP Publishing ; 2019
    In:  Journal of Applied Physics Vol. 126, No. 7 ( 2019-08-21)
    Details
    In: Journal of Applied Physics, AIP Publishing, Vol. 126, No. 7 ( 2019-08-21)
    Abstract: Polarization detection is a powerful tool to enhance the information recognition of objects. Although the photodetectors based on graphene with distinguished features have been considered promising for high-performance light perception applications, they are typically polarization insensitive. We proposed and experimentally achieved a plasmonic-cavity integrated graphene phototransistor for polarization detection. The plasmonic cavity enhances the photoresponse of transverse magnetic waves and restrains that of transverse electric waves, leading to a remarkable polarization extinction ratio as high as 30, surpassing those of all previously reported two-dimensional material-based polarization sensitive photodetectors by 3–10 times. In addition, for the selected polarization, the photoresponse is enhanced by more than one order of magnitude due to the enhanced localized field. We chose near-infrared for demonstration, while the principle is applicable to other wavelength ranges.
    Type of Medium: Online Resource
    ISSN: 0021-8979 , 1089-7550
    URL: Article
    DOI: 10.1063/1.5109249
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2019
    detail.hit.zdb_id: 220641-9
    detail.hit.zdb_id: 3112-4
    detail.hit.zdb_id: 1476463-5
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  • 8
    Online Resource
    Online Resource
    Simultaneous improvement of magnetic-field-induced working temperature and mechanical properties in Ni–Mn–In shape memory alloy
    AIP Publishing ; 2022
    In:  AIP Advances Vol. 12, No. 6 ( 2022-06-01)
    Details
    In: AIP Advances, AIP Publishing, Vol. 12, No. 6 ( 2022-06-01)
    Abstract: Ni–Mn–In magnetic shape memory alloys, which can be stimulated by an external magnetic field, exhibit a fast response and have aroused wide attention in the field of electro-mechanical actuators. However, the low working temperature and the inherent brittleness severely limit their application scenarios. Here, an effective strategy is proposed to improve the magnetic-field-induced working temperature and mechanical properties in Ni–Mn–In shape memory alloys. We predict that the Ni16Mn12In4 alloy with Pt doping can solve the problems simultaneously through a comprehensive first-principles study. The calculations show that Pt occupying Ni sites can increase the martensitic temperature (TM) and Curie temperature (TC) simultaneously. TM and TC of Ni14Mn12In4Pt2 are predicted to be as high as 440 and 476 K, respectively. This is mainly due to the increased phase stability of the martensite and Pt–Mn bonds having stronger ferromagnetic exchange effects than Ni–Mn bonds after Pt doping. Moreover, according to the increase of B/G and v after Pt doping, it can be concluded that the mechanical properties of the alloy have been improved.
    Type of Medium: Online Resource
    ISSN: 2158-3226
    URL: Article
    DOI: 10.1063/5.0092428
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2022
    detail.hit.zdb_id: 2583909-3
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  • 9
    Online Resource
    Online Resource
    Novel electrospun poly(lactic acid)/poly(butylene carbonate)/graphene oxide nanofiber membranes for antibacterial applications
    AIP Publishing ; 2019
    In:  AIP Advances Vol. 9, No. 6 ( 2019-06-01)
    Details
    In: AIP Advances, AIP Publishing, Vol. 9, No. 6 ( 2019-06-01)
    Abstract: In this work, Poly(lactic acid) (PLA)/poly(butylene carbonate) (PBC)/graphene oxide (GO) nanofiber membranes with different content GO were successfully prepared by electrospinning. The structural and physical characteristics of the membranes were investigated by scanning electron microscopy (SEM), Differential Scanning Calorimeter (DSC), contact angle test, Fourier Transform Infrared Spectroscopy (FT-IR), agar diffusion method. SEM observations revealed a fine dispersion of GO in the nanofiber matrices. FT-IR spectra result showed that the GO, PBC and PLA mixed well in the PLA/PBC/GO films. The antibacterial properties of nanofiber membranes were also investigated. The results indicated that the antimicrobial activities of PLA/PBC/GO composite nanofibrous films were much higher than that of pure PLA/PBC nanofibrous films. Meanwhile, the antimicrobial activity against S.aureus was also slightly higher than E. coli.
    Type of Medium: Online Resource
    ISSN: 2158-3226
    URL: Article
    DOI: 10.1063/1.5100109
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2019
    detail.hit.zdb_id: 2583909-3
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  • 10
    Online Resource
    Online Resource
    Thermally and optically tunable lasing properties from dye-doped holographic polymer dispersed liquid crystal in capillaries
    AIP Publishing ; 2018
    In:  Journal of Applied Physics Vol. 123, No. 10 ( 2018-03-14)
    Details
    In: Journal of Applied Physics, AIP Publishing, Vol. 123, No. 10 ( 2018-03-14)
    Abstract: In this paper, we investigated tunable lasing properties from the dye-doped holographic polymer dispersed liquid crystal (HPDLC) gratings in capillaries with thermal and optical manners. The thermally tunable range of the lasing from the dye-doped HPDLC reached 8.60 nm with the temperature ranging from 23 °C to 50 °C. The optically tunable laser emission was achieved by doping azo-dye in HPDLC. The transition of azo-dye from trans- to cis-state could induce the reorientation of LC molecules after UV light irradiation, which resulted in the variation of refractive index contrast of LC-rich/polymer-rich layer in HPDLC. Experimentally, the emission wavelength of lasing showed a blueshift (about 2 nm) coupled with decreasing output intensities. The tunable laser based on HPDLC may enable more applications in laser displays, optical communication, biosensors, etc.
    Type of Medium: Online Resource
    ISSN: 0021-8979 , 1089-7550
    URL: Article
    DOI: 10.1063/1.5020765
    Language: English
    Publisher: AIP Publishing
    Publication Date: 2018
    detail.hit.zdb_id: 220641-9
    detail.hit.zdb_id: 3112-4
    detail.hit.zdb_id: 1476463-5
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