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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Conductive inkjet printed antennas on flexible low-cost paper-based substrates for RFID and WSN applications

Rida, Amin H. January 2009 (has links)
Thesis (M. S.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2009. / Committee Chair: Dr. Manos Tentzeris; Committee Member: Dr. Gregory Durgin; Committee Member: Dr. Joy Laskar.
42

Rub, fold, and abrasion resistance testing of digitally printed documents /

DiSantis, Nicholas E. January 2007 (has links)
Thesis (M.S.)--Rochester Institute of Technology, 2007. / Typescript. Includes bibliographical references (leaves 61-65).
43

Development of zinc oxide based flexible electronics

Winarski, David J. 06 August 2019 (has links)
No description available.
44

Study on Additively Manufactured Antennas for Wearables and Bio-medical Applications

Lamsal, Sanjee 03 May 2023 (has links)
No description available.
45

Digital Valve-Jet Printing of Chitosan Ink on Cotton Fabric for Antibacterial and Comfort Properties

Haghi, Media January 2023 (has links)
Throughout history, the spread of microorganisms has caused much damage including infectious diseases and deaths. Ever since humans realized the impact of bacteria especially on population health many efforts have been done to combat the spread of pathogens. Textiles, as suitable environments for the growth of microorganisms are one of the major sources of epidemics. Therefore, producing antibacterial textiles can lessen the chances of transmission of microorganisms. In spite of effective protection antibacterial textiles offer, lack of comfort can result in less interest in the products from the users. The aim of this project is to use valve-jet printing as a resource-efficient finishing method to produce antibacterial textiles and measure its effect on comfort properties. As a natural, non-toxic, and biodegradable antibacterial agent, chitosan was chosen to be printed on cotton fabric. An ink with 0.5 w/v% concentration of chitosan dissolved in 1.5v/v% acetic acid was prepared and printed on cotton fabric through ChromoJet printer. The fabric was cured at 150°C for 1 minute to stabilize the chitosan on cotton. Three types of printed fabrics were produced with different number of printing passes. The samples were characterized by various methods to investigate the performance of printed chitosan ink on the antibacterial and comfort properties of the cotton fabric. Results indicate a successful printing of chitosan ink on cotton fabric through valve-jet printing method. Results further showed that multiple printing passes of chitosan ink on cotton fabric can result in higher antibacterial activity. However, with excessive increase of chitosan, the fabric compromises the hand feel and softness. Results also showed an increase in air permeability with the increment in the amount of chitosan on the cotton fabric, whereas capillary rise decreased with the increase of chitosan amount. Contact angle measurement and hydrostatic pressure test showed that between the printed and not-printed samples no big difference was observed in terms of hydrophilicity. The result of the thesis is of great importance as they introduce new printing process for the fabrication of antibacterial textile with comfort properties for various applications.
46

INVESTIGATION OF THE EFFECT OF SWELLING AND SHRINKAGE ON THE WRINKLING RESPONSE OF LOCALLY WETTED PAPERS SUBJECTED TO TENSION WITH APPLICATION TO WEB-FED INK-JET PRINTING

Maharajan, Ranjit Kumar 24 July 2007 (has links)
No description available.
47

Development and Characterization of Low Cost Tungsten Disulfide Ink for Ink-jet Printing

Mayersky, Joshua 21 September 2018 (has links)
No description available.
48

Sensor Array Devices Utilizing Nano-structured Metal-oxides for Hazardous Gas Detection

Andio, Mark Anthony 16 August 2012 (has links)
No description available.
49

Light Stabilisation of Photochromic Prints

Brixland, Nikolina January 2016 (has links)
Light stabilisation of photochromic dyes is seen as the most challenging part in the development of photochromic dyes. The aim of this research is to compare stabilisation methods and their effect on the lifetime of a photochromic print on textile. The vision is to create a textile UV-sensor that detects current UV light exposure in the surroundings and alarms the wearer by showing colour. The developed inks have been formulated for ink-jet printing as a novel production method with resource saving properties. UV-LED light curable ink formulations were prepared for two dye classes; a non-commercial spirooxazine, a commercial spirooxazine (Oxford Blue) and a commercial naphthopyran (Ruby Red). Two different stabilisation methods were applied; chemically by incorporation of hindered amine light stabilisers and physically by polyurethane coating. Fatigue tests were performed to evaluate and compare the stabilisation methods. The tests included were household washing, multiple activations and intensive sun-lamp exposure. As a result it was found that Oxford Blue and spirooxazine had an initial better resistance to photodegradation than Ruby Red. The coating reduced the ability of colour development in higher extend for Oxford Blue and spirooxazine compared to Ruby Red. Moreover, the photocolouration increased with the number of activations for Oxford Blue and spirooxazine in particular. In general, the physically stabilised samples showed a better or similar fatigue resistance compared to chemically stabilised samples. On the other hand the results are weak in significance. It is concluded that the developed coating method in combination with further optimising has potential.
50

Digital textile patterns inspired by themes from the late 1950s/early 1960s

Pickett, Meagan Lynette January 1900 (has links)
Master of Science / Department of Apparel, Textiles, and Interior Design / Sherry J. Haar / Inspired by people and objects of the late 1950s/early 1960s, textile patterns were created to use as a tool in the education of children through play. Four themes were developed, with three main prints in each theme. These twelve prints had a coordinating print and solid colors designed, and were utilized in the development of paper doll clothing. Representing the look of Jacqueline Kennedy, the paper dolls feature a pearl necklace, sunglasses, and a brunette hairstyle. Fabric was also printed on using a home-based ink jet printer, and used to construct a garment for an 18-inch, three dimensional doll. The final outcomes were exhibited in a display window, with an interactive element for adults and children at the opening reception.

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