Please wait, while we are loading the content...
| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Jun Xue Hopwood, J.A. |
| Copyright Year | 2007 |
| Description | Author affiliation: Tufts Univ., Medford (Jun Xue; Hopwood, J.A.) |
| Abstract | Summary form only given. We demonstrate that the potential gradients created within microplasmas are capable of trapping micro-and nanoparticles in a three-dimensional space. The microplasma is generated within a microwave-excited discharge gap. The gap is typically 150 microns across and a symmetric 900 MHz voltage is applied across the gap to initiate and sustain the microplasma [1]. Although the plasma is in direct contact with microwave-driven electrodes, the ion plasma frequency and the natural frequency of the particles are orders of magnitude less than the drive frequency. Therefore, the particles suspended in the microplasma only respond to the internal, time-average plasma potential and externally applied potentials. To demonstrate the particle trapping phenomena, melamine formaldehyde particles are released 1 cm from the microplasma. The particles acquire a negative charge and are captured within the localized potential well of the microplasma. The residence time of particles is several minutes in flowing argon at 300 Pa. The particles are illuminated by HeNe laser and are observed to form "plasma crystals" with a periodicity of 120 microns. The particle positions allow for the visualization of the microplasma's internal potential structure. We also manipulate the internal electric fields using auxiliary electrodes consisting of quarter-wave microstrip transmission lines. By designing and microfabricating appropriate electrode structures, particles can lie systematically expelled from the microplasma trap. Time-of-flight measurements of expelled particles allow for the determination of particle size distributions. Application of these principles to nanoparticle sensing and diagnostics will be discussed. |
| Starting Page | 179 |
| Ending Page | 179 |
| File Size | 45626 |
| Page Count | 1 |
| File Format | |
| ISBN | 9781424409150 |
| ISSN | 07309244 |
| DOI | 10.1109/PPPS.2007.4345485 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-06-17 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Plasmas Electrodes Frequency Nanoparticles Microwave generation Voltage Potential well Argon Crystals Visualization |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|