Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Bala Krishna Juluri"'
Publikováno v:
Sensors and Actuators B: Chemical. 261:218-225
We demonstrate a gold island film (GIF) coated tattoo paper as acid free ‘green’ fabrication of transferable plasmonic patterns for surface enhanced Raman spectroscopy (SERS) based screening of food toxins. A tattoo paper, with a water soluble re
Publikováno v:
Journal of Colloid and Interface Science. 371:28-33
Anisotropic colloidal particles consisting of different compositions and geometry are useful for various applications. These include optical biosensing, antireflective coatings and electronic displays. In this work we demonstrate a simple and cost-ef
Autor:
Qingzhen Hao, Lasse Jensen, Bei Wang, Yuebing Zheng, Peter C. Eklund, Vincent H. Crespi, Tony Jun Huang, Bala Krishna Juluri, I-Kao Chiang
Publikováno v:
The Journal of Physical Chemistry C. 114:18059-18066
Using pyridine as a probe molecule, we performed surface enhanced Raman spectroscopy (SERS) studies on platinum and gold nanodisk arrays at both plasmon resonant and off-plasmon resonant excitation wavelengths. A large Raman cross-section enhancement
Autor:
Daniel Ahmed, Lin Lin Jensen, Mengqian Lu, Lasse Jensen, Bala Krishna Juluri, Tony Jun Huang, Yuebing Zheng
Publikováno v:
Advanced Materials. 22:3603-3607
Y.B.Z and B.K.J contributed equally to this work. This research was supported by the Air Force Office of Scientific Research (FA9550-08-1-0349), the National Science Foundation (ECCS-0801922, ECCS-0609128, and ECCS-0609128), and the Penn State Center
Publikováno v:
The Journal of Physical Chemistry C. 113:18499-18503
In this work, we show using both experiments and classical electrodynamic simulations that plasmon splitting in resonant molecule-coated nanoparticles increases linearly as the square root of absorbance of the molecular layer. This linear relationshi
Publikováno v:
Microfluidics and Nanofluidics. 8:139-144
In this study, we report a rapid microfluidic mixing device based on chaotic advection induced by microbubble–fluid interactions. The device includes inlets for to-be-mixed fluids and nitrogen gas. A side-by-side laminar flow segmented by monodispe
Publikováno v:
Microfluidics and Nanofluidics. 7:727-731
Due to the low Reynolds number associated with microscale fluid flow, it is difficult to rapidly and homogenously mix two fluids. In this letter, we report a fast and homogenized mixing device through the use of a bubble-based microfluidic structure.
Autor:
Tony Jun Huang, Lasse Jensen, Linlin Jensen, Yuebing Zheng, Thomas R. Walker, Wei Yan, Bala Krishna Juluri
Publikováno v:
The Journal of Physical Chemistry C. 113:7019-7024
We report on chemical etching of ordered Au nanostructure arrays to continuously tune their localized surface plasmon resonances (LSPR). Real-time extinction spectra were recorded from both Au nanodisks and nanospheres immobilized on glass substrates
Autor:
Ying-Wei Yang, Bala Krishna Juluri, Amar H. Flood, Yuebing Zheng, Paul S. Weiss, Lei Fang, Lasse Jensen, J. Fraser Stoddart, Tony Jun Huang
Publikováno v:
Nano Letters. 9:819-825
A gold nanodisk array, coated with bistable, redox-controllable [2]rotaxane molecules, when exposed to chemical oxidants and reductants, undergoes switching of its plasmonic properties reversibly. By contrast, (i) bare gold nanodisks and (ii) disks c
Publikováno v:
Advanced Materials. 20:3528-3532