Enhancing the Chemically-Induced Optical Properties Supported by the Localized Surface Plasmon Resonance in Anisotropic Single Gold Bipyramids.

The localized surface plasmon resonance (LSPR)-based biosensors and others optical devices that employ gold nanoparticles (AuNPs) have shown tremendous advantages over techniques such as fluorescence and chemiluminescence in recent developments of nanoscience and nanotechnology. In one hand,the localized surface plasmon resonance (LSPR) biosensors are ultra-high refractive index sensing, they have a fast sensor response, they enable real-time detection and can be use in a label-free technique. In the other hand, instead surface plasmon resonance (SPR) in a bulk gold, gold nanoparticles (AuNPs) exploited under the quasi-static boundary condition offer an unprecedented platform for investigating on desired optical and spectroscopic properties at nanoscale. Relative to other metallic nanoparticles supporting LSPR signal, AuNPs have drawn the greatest attention and interest owing to their biocompatibility with high chemical and physical stability. More importantly, AuNPs easy functionalization with organic and biological molecules fostered their use as LSPR-based sensors materials. However, LSPR still has many fundamental limitations that cause LSPR based sensors efficiency to be low compared to surface plasmon polariton (SPP) sensors. One major limitation of LSPR sensor effectiveness is changes in the magnitude of the shift across the spectrum due to the shape of the LSPR peak when monitoring changes of the nanoparticle local environment at their surface. This results in unsymmetrical broadening and was found to have a negative impact on sensing efficiency. Therefore, for optimal and efficient engineering of gold nanoparticles (AuNPs) LSPR-based sensors and others optical devices, AuNPs LSPR based unique optical properties must be fully understood and harnessed. As a first report, we devoted a particular focus on LSPR scattering inflection points (IFs) of single gold bipyramids (AuBPs). The findings reveal that tracking LSPR IFs exhibit high sensitivity over their counterpart LSPR peak shift locations. More importantly, the limitation on unsymmetrical broadening is no more a limitation on the changes of the magnitude of the shift across the spectrum due to the shape of the LSPR peak.Maste

3차원 인텐시티 어레이를 이용한 비상관 다중음원의 위치추정

학위논문(석사) - 한국과학기술원 : 기계공학전공, 2014.8, [ vi, 67 p. ]The content of the thesis describes approach of localization incoherent sources over 3D sound intensity array. The core of this work is a blind source separation combined with 3D sound intensity calculation, what results in angle detection of incoherent sources. The feasibility of the proposed method is firstly studied over simulations prior the method is exampled to experimental measurements. Performance evaluation measures are suggested over statistical quantities and possible errors that arose or could have arisen are discussed.한국과학기술원 : 기계공학전공

A Method for Modifying a Solid Substrate Surface Using One-Pot Process

본 발명은 원-포트 공정(one-pot)을 이용한 고체 기판 표면의 개질방법을 제공한다. 본 발명에 따른 고체 기판 표면의 개질방법은 도파민(dopamine)과 같은 접착물질과 기능성 타겟물질을 원-포트 공정으로 고체 기판 표면에 도입한다. 이 후, 기능화된 표면은 그대로 사용하거나, 또 다른 기능성 물질 도입을 위한 중간체 표면으로 사용이 가능하다. 본 발명에 의한 고체 기판 표면의 개질방법에 따르면, 다양한 종류의 고체 기판에 여러 가지 기능성을 도입하는 것이 가능하여 의료, 제약, 반도체 및 촉매와 같은 매우 다양한 분야에 적용이 가능할 뿐만 아니라, 기능성 도입을 위한 고체 기판의 코팅이 원-포트 공정에 의하여 수행되어 매우 단순한 공정으로 고체 기판의 표면을 개질할 수 있는 장점이 있다

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