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| 1 | Direct observation of localized surface plasmon field enhancement by Kelvin probe force microscopy显示文摘A surface plasmon(SP)is a fundamental excitation state that exists in metal nanostructures.Over the past several years,the performance of optoelectronic devices has been improved greatly via the SP enhancement effect.In our previous work,the responsivity of GaN ultraviolet detectors was increased by over 30 times when using Ag nanoparticles.However,the physics of the SP enhancement effect has not been established definitely because of the lack of experimental evidence.To reveal the physical origin of this enhancement,Kelvin probe force microscopy(KPFM)was used to observe the SP-induced surface potential reduction in the vicinity of Ag nanoparticles on a GaN epilayer.Under ultraviolet illumination,the localized field enhancement induced by the SP forces the photogenerated electrons to drift close to the Ag nanoparticles,leading to a reduction of the surface potential around the Ag nanoparticles on the GaN epilayer.For an isolated Ag nanoparticle with a diameter of~200 nm,the distribution of the SP localized field is located within 60 nm of the boundary of the Ag nanoparticle.For a dimer of Ag nanoparticles,the localized field enhancement between the nanoparticles was the strongest.The results presented here provide direct experimental proof of the localized field enhancement.These results not only explain the high performance of GaN detectors observed with the use of Ag nanoparticles but also reveal the physical mechanism of SP enhancement in optoelectronic devices,which will help us further understand and improve the performance of SP-based optoelectronic devices in the future. | Da-Bing Li Xiao-Juan Sun Yu-Ping Jia Mark I Stockman Hari P Paudel Hang Song Hong Jiang Zhi-Ming Li | 2017 | Light(Science & Applications)2017，6，1： | 2 |
| 2 | Chromatin regulation by Brgl underlies heart muscle development and disease 显示文摘 | Hang CT Yang J Han P | 2010 | Nature2010，466，7302： | 1 |
| 3 | Cultural Clusters: Methodology and Findings 显示文摘 | GUPTA V HANGES P J DORFMAN P | 2002 | Journal of World Business2002，，37： | 1 |
| 4 | Changes in brain GnRH associated withphotorefractoriness in house sparrows (Passer domesticus) 显示文摘 | Hang T P Ball G F | 1995 | General Comp Endocrinol1995，99，： | 1 |
| 5 | Controlling band gap and refractive index in dopant-freeα-Fe2O3Films显示文摘 | KUMAR P RAWAT N HANG D R | 2015 | Electronic Materials Letters2015，11，13： | 1 |
| 6 | Relay Feedback Auto-tuning of Cascade Controllers显示文摘 | Hang C C Loh A P Vasnani V U | 1994 | IEEE Trans on Control Syst Tech1994，，1： | 1 |
| 7 | Manure management practices on biogas and non-biogas pig farms in developing countries-using livestock farms in Vietnam as an example显示文摘 | Thien Thu C T Cuong P H Hang L T | 2012 | Journal of Cleaner Production2012，，27： | 1 |
| 8 | Europ Polym J显示文摘 | Xu W B Liang G D Zhai H B Tang S P Hang G P Pan W P | 2003 | 39:1 4672003，39，： | 1 |
| 9 | Chromatin regulation by Brgl underlies heart muscle development and disease 显示文摘 | Hang CT Yang J Han P | 2010 | Nature2010，466，7302： | 1 |
| 10 | The role of hypertension in the vascular disease and myocardial infarcts associated with marine systemic lupus erythematosus显示文摘 | HANG L STEPHENS-LARSON P HENRY J P | 1983 | Arthritis Rheum1983，26，11： | 1 |
| 11 | Exact and approximate maximum likelihood localization algorithms显示文摘 | Chan Y T Hang H Y C and Ching P C | 2006 | IEEE Transactions on Vehicular Technology2006，55，1： | 1 |
| 12 | Multidomain integration in the structure of the HNF4α nuclear receptor eomplex显示文摘 | Chandra V Hang P Potluri N Wu D Kim Y Rastinejad F | 2013 | Nature2013，495，： | 1 |
| 13 | Unintentional injuriesoveral- yearPeriod in a rural vietnamese community: Deseribinga- nieeberg显示文摘 | Hang HM Bach TT Byass P | 2005 | Public Health2005，119，： | 1 |
| 14 | Chromatin regulation by Brg1 underlies heart muscle development and disease显示文摘 | Hang CT Yang J Han P | 2010 | Nature2010，466，7302： | 1 |
| 15 | Determination of neodymium in rare earth mixtures by fourth -derivative spectrophotometry 显示文摘 | Wang N Hang W Qi P | 1991 | Analytica Chimica Acta1991，254，： | 1 |
| 16 | Controlled growth of oriented amorphous silicon nanowires via a solid-liquid-solid (SLS)mechanism显示文摘 | Yu D P Xing Y J Hang Q L | 2001 | Physica E2001，9，： | 1 |
| 17 | IMC-based control system design for unstable processes显示文摘 | Yang X P Wang Q G Hang C C | 2002 | Industrial Engineering & Chemical Research2002，41，17： | 1 |
| 18 | Conceptualizing and measuring cultures and their conse- quences: A comparative review of GLOBE's and Hofstede' s approaches 显示文摘 | Javidan M House R J Dorfman P W Hanges | 2006 | Journal of International Business Stud- ies2006，37，6： | 1 |
| 19 | Pedicle screw inser- tion accuracy with different assisted methods:a system- atic re,Jiew and recta-analysis of comparative studies 显示文摘 | Tian NF Hang QS Zhou P | 2011 | Eur Spine J2011，20，6： | 1 |
| 20 | Comparative study on overex-pression of HER2/neu and HER3 in gastric cancer 显示文摘 | Hang X L Yang Y S Xu D P | 2009 | World J Surg2009，33，10： | 1 |
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