Nanotalk: Conversations With Scientists And Engineers About Ethics, Meaning, And Belief in the Development of Nanotechnology

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No one really knows where nanotechnology is leading, what its pursuit will mean, and how it may affect human and other forms of life. Nevertheless, its research and development are moving briskly into that unknown. It has been suggested that rapid movement towards ‘who knows where’ is endemic to all technological development; that its researchers pursue it for curiosity and enjoyment, without knowing the consequences, believing that their efforts will be beneficial. Further, that the enthusiasm for development comes with no malicious intent but rather from simple ignorance. Contrary to that commonly held perception about the collective pursuit of technological development, there are individual research scientists and engineers who are quite willing to reflect on the meaning of their work in nanotechnology. Nanotalk is a book of conversations and explorations with thirty five such nano-research scientists and engineers who share their ideas, experiences, perceptions, and beliefs about their work, humanity, nature, change, and the future of the world with nanotechnology. Precisely because of the unknowable nature of nanotechnology research and development, conscientious foresight and ethical reflection are warranted every step of the way. Not only do nanotechnology research and development represent enormous financial commitments, but they also require a profound leap of faith regarding its possible outcomes. Using these conversations as the basis of reflection and deliberation, the author explores the possible significance of nanotechnology to humanity and how it might be pursued conscientiously and ethically.

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NIST Scientists Address ‘Wrinkles’ In Transparent Film Development

NIST Scientists Address ‘Wrinkles’ In Transparent Film Development
A closer look at a promising nanotube coating that might one day improve solar cells has turned up a few unexpected wrinkles, according to new research* conducted at the National Institute of Standards and Technology (NIST) and North Dakota State University (NDSU)-research that also may help scientists iron out a solution.

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Nanotechnologies, Hazards and Resource Efficiency: A Three-tiered Approach to Assessing the Implications of Nanotechnology and Influencing its Development

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This book demonstrates that the application of nanotechnology in industry can result in increased eco-efficiency and other environmental gains. It also shows what needs to be done from the side of scientists, engineers and science policy makers to guide future development in nanotechnology towards sustainability. The underlying method has been a three-tier approach of prospective technology assessment.

The positive effects of nanotechnology are illustrated with four case studies. One additional case study deals with possible risks and negative effects of nanotechnology. In the last section, the role of guiding principles in future nanotechnology research and development is discussed.

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Self-aligned Side Gates for Nanowires and Nanotubes: The development and application of a new gate architecture for manipulating and defining 1D quantum dots with possibilities for quantum computation

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The book presents the experimental and theoretical development of a simple to fabricate new control architecture for nanotubes and nanowires. The architectures arrangement offers new possibilities for electrical, magnetic and mechanical control and a new spin detection architecture with applicability to quantum computation is presented. The fabrication procedure allows twin side gate electrodes to be placed within 5nm of a nanotube. The nanotube is suspended between the twin gate electrodes and the suspension creates an air gap between the nanotube and the gates. The air gap can help when applying high fields and should reduce noise, shielding and hysteretic effects. The twin gate structure allows for high field gradients which can be used to modify band gaps, while the proximity and dimensions assist the formation of well-defined tunnel barriers. Ultimately it is hoped that the architecture will aid the creation and control of quantum dots and offer the possibility of extending low dimensional experiments in GaAs to nanotubes and nanowires.

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