Physical Sciences and Mathematics Commons^™

Impact Of High-Order Surface Plasmon Modes Of Metal Nanoparticles On Enhancement Of Optical Emission, Greg Sun, Jacob B. Khurgin, C. C. Yang

Physics Faculty Publications

We consider the impact of high-order surface plasmon modes supported by the metal nanoparticles on the efficiency enhancement of optical emission. Using the example of Au nanosphere embedded in the GaN dielectric, we show that for an emitter with certain original radiative efficiency, placing the emitter too close to the metal sphere does not always produce additional enhancement. Thus our model provides analytical treatment of the luminescence quenching and can be used to optimize both nanoparticle size and its separation from the emitter to yield maximum enhancement.

Carbon Capture And Storage: Combining Economic Analysis With Expert Elicitations To Inform Climate Policy, Erin D. Baker, Haewon Chon, Jeffrey M. Keisler

Management Science and Information Systems Faculty Publication Series

The relationship between R&D investments and technical change is inherently uncertain. In this paper we combine economics and decision analysis to incorporate the uncertainty of technical change into climate change policy analysis. We present the results of an expert elicitation on the prospects for technical change in carbon capture and storage. We find a significant amount of disagreement between experts, even over the most mature technology; and this disagreement is most pronounced in regards to cost estimates. We then use the results of the expert elicitations as inputs to the MiniCAM integrated assessment model, to derive probabilistic information about the …

Florida Boating Access Facilities Inventory And Economic Study, Including A Pilot Study For Lee County: A Report To The Florida Fish And Wildlife Conservation Commission, Urban Harbors Institute, University Of Massachusetts Boston, Bordner Research, Inc., Recreational Marine Research Center Of Michigan State University, Center For Urban And Environmental Solutions Of Florida Atlantic University, Environmental Economics, Inc., Planning And Zoning Center Of Michigan State University, Resource Economics Research, Llc

Urban Harbors Institute Publications

This report describes the work program and results of the "Statewide Boating Access Facilities Inventory and Economic Study Including a Pilot Study for Lee County, Florida" commissioned by the Florida Fish and Wildlife Conservation Commission (FWC) in 2005. The study was funded in part by a grant to the FWC from the U.S. Fish and Wildlife Service and by Lee County. The scope and objectives of the study are summarized in the introduction, and the subsequent sections report on the various components of the study.

For many years, Florida has been among the fastest growing states in the nation, which …

Compatibility Determination: Considerations For Siting Coastal And Ocean Uses (Draft), Jack Wiggin, Kristin Uiterwyk, Steve Bliven, Dan Hellin, Fara Courtney, Rich Delaney, Pat Hughes, Tracey Morin Dalton, Stephanie Moura, Nicholas Napoli, Kim Starbuck

Urban Harbors Institute Publications

This draft report is one of several prepared under contract to the Massachusetts Ocean Partnership (MOP) to support the Massachusetts Executive Office of Energy and Environmental Affairs (EEA) in its development of the integrated coastal ocean management plan mandated by the MA Oceans Act of 2008. Among other requirements, the Oceans Act states that the plan shall “identify appropriate locations and performance standards for activities, uses and facilities allowed under sections 15 and 16 of chapter 132A.” To fulfill this requirement, the EOEEA planning team wanted to utilize compatibility determinations as a tool for considering the appropriate locations for activities, …

Green Pond Harbor Management Plan (Draft), Urban Harbors Institute, University Of Massachusetts Boston

Urban Harbors Institute Publications

Green Pond is one of a number of coastal ponds in Falmouth. It covers over 135 acres and is an important natural and recreational resource for the people of Falmouth and visitors. Most of the area around the pond is private residential property interspersed with a few commercial businesses and open space. As with other areas of Massachusetts, the tidelands around the pond fall within the jurisdiction of Chapter 91 (the Massachusetts Public Waterfront Act). Through Chapter 91, the Commonwealth seeks to preserve and protect the rights of the public, and to guarantee that private uses of tidelands and waterways …

City Of Gloucester Harbor Plan & Designated Port Area Master Plan, July 2009, Sarah Buck, Greg Ketchen, Urban Harbors Institute, University Of Massachusetts Boston

Urban Harbors Institute Publications

A harbor plan is a waterfront land and water use plan intended to establish the community’s objectives, standards, and policies for guiding public and private utilization of land and of water within and adjacent to the commonwealth’s jurisdiction. The 1999 Gloucester Harbor Plan was chiefly focused on infrastructure improvements for both maritime and visitor oriented industries along the waterfront as a central means of recharging the harbor’s economic engine. Many of the improvements have been completed in the wake of this plan. However, it largely ignored the confusing web of land use regulations that has since emerged as the central …

Science Tools To Implement Ecosystem Based Management In Massachusetts (Draft), Mrag Americas, Incorporated, Massachusetts Ocean Partnership, Woods Hole Oceanographic Institute, Urban Harbors Institute, University Of Massachusetts Boston

Urban Harbors Institute Publications

In this report we provide a framework for implementing ecosystem based management (EBM) and suggest a range of science information tools and their appropriate application to the decision making process. These tools can be broadly classified as modeling tools, decision analysis tools, and indicators. Modeling tools allow the user to organize data, communicate scientific findings to management and stakeholder audiences, and test alternative management scenarios. When used unwisely, however, models can preclude options, present unusable scenarios, generate results in scales that differ from management needs, and impose huge time, data, and technical requirements (Manno et al., 2008). Decision analysis tools …

Planning Framework Options For The Massachusetts Ocean Plan (Draft), Jack Wiggin, Kristin Uiterwyk, Steve Bliven, Dan Hellin, John Duff, David Terkla, Robert E. Bowen, Andrew A. Rosenberg, Jennie Harrington, Jill H. Swasey, Suzanne Iudicello, Robert O’Boyle, Porter Hoagland, Hauke L. Kite-Powell, Di Jin, Fara Courtney, Rich Delaney, Pat Hughes, Tracey Morin Dalton, Suzanne Goulet Orenstein, Charles N. Ehler, Fannie Douvere, Les Kaufman, Charles T. Mccaffrey Jr., Nicholas Napoli, Stephanie Moura, Kim Starbuck

Urban Harbors Institute Publications

The Massachusetts Ocean Partnership (MOP) Planning Frameworks Team, in consultation with the Massachusetts Executive Office of Energy and Environmental Affairs (EEA), and based on collective experience and a review of ocean, coastal and resource management programs from the US and other countries, suggests that nine elements are essential components of the framework for the Massachusetts Ocean Plan and its implementation. While management plans and programs generally have these elements in common, there are a range of options for carrying out each program component. These options were presented to structure and inform the development of the Massachusetts Ocean Plan. For the …

Impact Of Disorder On Surface Plasmons In Two-Dimensional Arrays Of Metal Nanoparticles, Jacob B. Khurgin, Greg Sun

Physics Faculty Publications

We study the impact of disorder on the properties of surface plasmons (SP) in metal nanoparticle arrays and develop analytical expressions enabling us to ascertain the degree of localization and mixing between the SP states. We show that it might be advantageous to intentionally introduce a certain degree of disorder in order to engineer the improved sensors and detectors.

Case Study: Saving Money Through Alternative Disposal Of Street Sweeping Debris, Town Of Natick, Massachusetts, Edward J. Collins, Jr. Center For Public Management, University Of Massachusetts Boston

Edward J. Collins Center for Public Management Publications

In 2004, Natick submitted a Beneficial Use Determination Application for a restricted use determination by the state Department of Environmental Protection (DEP) for a pilot project to demonstrate that debris collected from sweeping Town roads could be reused to the benefit of the Town. By doing this, the Town would avoid the associated high landfill disposal costs of the sweeping debris, as well as of the cost of disposing excess compost that the Town could now mix with the debris. The majority of the “sweeping debris” is sand the Town uses on its roads during the winter. This pilot tested …

Enhancement Of Light Absorption In A Quantum Well By Surface Plasmon Polariton, Jacob B. Khurgin, Greg Sun

Physics Faculty Publications

We investigate analytically the degree to which the absorption of light in a single quantum well can be enhanced in the proximity of a structured metallic surface and show that the wavelength at which the maximum enhancement of about one order of magnitude is attained depends on metal loss and the initial absorption in a quantum well.

Nantucket & Madaket Harbors Action Plan, Urban Harbors Institute, University Of Massachusetts Boston

Urban Harbors Institute Publications

The Nantucket and Madaket Harbors Action Plan presents the community’s goals, objectives and recommendations for guiding public and private use of the land and water of its harbor areas and establishes an implementation program to achieve the desired outcomes. The plan was prepared under the auspices of the Nantucket Board of Selectmen and guided by the Nantucket and Madaket Harbors Plan Review Committee.

The 2007 plan is an update of the first action plan, which was prepared in 1993, and as such is meant to complement the original plan. The 1993 plan contained extensive background material, much of which is …

Practical Enhancement Of Photoluminescence By Metal Nanoparticles, Greg Sun, Jacob B. Khurgin, R. A. Soref

Physics Faculty Publications

We develop a simple yet rigorous theory of the photoluminescence (PL) enhancement in the vicinity of metal nanoparticles. The enhancement takes place during both optical excitation and emission. The strong dependence on the nanoparticle size enables optimization for maximum PL efficiency. Using the example of InGaN quantum dots (QDs) positioned near Ag nanospheres embedded in GaN, we show that strong enhancement can be obtained only for those QDs, atoms, or molecules that are originally inefficient in absorbing as well as in emitting optical energy. We then discuss practical implications for sensor technology.

Practical Limits Of Absorption Enhancement Near Metal Nanoparticles, Jacob B. Khurgin, Greg Sun, R. A. Soref

Physics Faculty Publications

We consider the enhanced absorption of optical radiation by molecules placed in the vicinity of spherical metal nanoparticles in the realistic situation that includes perturbation of the optical field by the absorbing molecules. We show that there is an optimal nanosphere radius that gives the strongest enhancement for each combination of the number of absorbing molecules, their absorption strength, and their distance from the nanosphere surface and that the enhancement is strong only for relatively weak and diluted absorbers.