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Full-Text Articles in Engineering
Programmable Periodicity Of Quantum Dot Arrays With Dna Origami Nanotubes, Hieu Bui, Craig Onodera, Carson Kidwell, Yerpeng Tan, Elton Graugnard, Wan Kuang, Jeunghoon Lee, William B. Knowlton, Bernard Yurke, William L. Hughes
Programmable Periodicity Of Quantum Dot Arrays With Dna Origami Nanotubes, Hieu Bui, Craig Onodera, Carson Kidwell, Yerpeng Tan, Elton Graugnard, Wan Kuang, Jeunghoon Lee, William B. Knowlton, Bernard Yurke, William L. Hughes
Materials Science and Engineering Faculty Publications and Presentations
To fabricate quantum dot arrays with programmable periodicity, functionalized DNA origami nanotubes were developed. Selected DNA staple strands were biotin-labeled to form periodic binding sites for streptavidin-conjugated quantum dots. Successful formation of arrays with periods of 43 and 71 nm demonstrates precise, programmable, large-scale nanoparticle patterning; however, limitations in array periodicity were also observed. Statistical analysis of AFM images revealed evidence for steric hindrance or site bridging that limited the minimum array periodicity.
Teaching Inquiry-Based Stem In The Elementary Grades Using Manipulatives: A Systemic Solution Report, Louis S. Nadelson, Anne Hay, Pat Pyke, Janet Callahan, Cheryl Schrader
Teaching Inquiry-Based Stem In The Elementary Grades Using Manipulatives: A Systemic Solution Report, Louis S. Nadelson, Anne Hay, Pat Pyke, Janet Callahan, Cheryl Schrader
Curriculum, Instruction, and Foundational Studies Faculty Publications and Presentations
Young learners come to school holding myriad conceptions about how the world works, particularly in the areas of science, technology, engineering, and mathematics, or STEM.1-3 Further, young students' conceptions are commonly based on fragmented knowledge or naïve perspectives that contribute to the importance of early exposure to and practice with scrutinizing situations scientifically.1,3 An important part of helping children gain the skills necessary to approach situations scientifically involves preparing them to conduct scientific inquiry.3 The development of critical thinking skills and scientific approaches to problem solving should begin early in education.4 However, lack of elementary …