Nano-conductive Adhesives for Nano-electronics Interconnection

Li, Yang; Moon, Kyoung‐Sik; Wong, Ching‐Ping

doi:10.1007/978-1-4419-0040-1_2

Cited by 25 publications

(16 citation statements)

References 63 publications

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“…A direct attachment of the IC with electrically conductive adhesive (ECA) bonding would probably be ideal because of a low-temperature process and low cost. In the future, the attachment of the IC could be also done directly by inkjet-printing the adhesive on the tag antenna's IC pads as jettable ECAs become available [19].…”

Section: E Embedding Rfid Tags Into Plywood Using Direct Inkjet-prinmentioning

confidence: 99%

Automated Identification of Plywood Using Embedded Inkjet-Printed Passive UHF RFID Tags

Virtanen

Virkki

Sydänheimo

et al. 2013

IEEE Trans. Automat. Sci. Eng.

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The use of passive ultra high-frequency (UHF) radio frequency identification (RFID) integrated into plywood boards is proposed to enable the identification and tracking of individual plywood boards and end products of plywood. For the first time, tags are embeddable inside plywood by direct inkjet-printing tag antennas on pure birch veneer. The use of passive UHF RFID technology in the applications of plywood industry is discussed, two tag antenna designs for plywood are presented and the tag fabrication procedures are described. Furthermore, results from tag performance measurements performed in the authentic application environment as well as in anechoic conditions are presented and discussed. Measurements show that tags printed on veneer and embedded inside 2 mm thick plywood board exhibited theoretical read ranges from 7.9 to 10.1 meters. The read ranges obtained meet the demands of the plywood industry and offer reliable identification even in challenging environments.Note to Practitioners-The use of integrated UHF RFID technology embedded inside plywood could bring significant benefits to the plywood industry. At the moment, identification and tracking are done manually or by using bar codes on large shipments of plywood. Manual identification can lead to misreads and external bar codes are easily detached or damaged. In this paper, we propose a solution to directly inkjet-print RFID tags on veneer. After printing, they can be embedded inside plywood. As a result, individual plywood boards are identifiable and traceable during their whole lifetime, even in their end product form. This paper discusses the benefits and challenges of passive UHF RFID technology in the plywood industry, explains the tag fabrication procedures and presents the measurement results of plywood-embedded tags. Results show that the tags are readable from several meters, even inside thick plywood boards. Thus, embedded RFID technology could be utilized by the industry as well as by the end users of plywood as an efficient and reliable automated identification method for plywood boards and plywood-made products.Index Terms-Plywood industry, radio frequency identification (RFID), inkjet.

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Section: E Embedding Rfid Tags Into Plywood Using Direct Inkjet-prinmentioning

confidence: 99%

Automated Identification of Plywood Using Embedded Inkjet-Printed Passive UHF RFID Tags

Virtanen

Virkki

Sydänheimo

et al. 2013

IEEE Trans. Automat. Sci. Eng.

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“…Inevitably, failure probabilities increase if devices are not consistently maintained and repaired [1][2][3]. For mass produced miniaturized electronic components, the high cost, difficulty, or even impossibility of repair justify research concerning materials capable of 'self-healing' upon the occurrence of damage [4][5][6][7]. Thus, the goal of this research is to fabricate materials commonly used in microelectronics possessing the ability to automatically recover their original functionality much like wound healing within a biological system [3,[8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Electrically conductive epoxies (ECAs) are often used as external coatings, 'bulk' packaging materials or as interconnects for electronic devices [12][13][14][15][16]. Thermoset epoxies are commonly chosen due to their relevant properties, such as excellent adhesive strength, good chemical and corrosion resistance, and low cost [6,[16][17][18][19]. Conductive fillers (e.g.…”

Section: Introductionmentioning

confidence: 99%

Electrically conductive self-healing polymer composite coatings

Bailey

Leterrier

Garcia

et al. 2015

Progress in Organic Coatings

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The goal of the research described herein is the fabrication and assessment of electrically conductive partially-cured epoxy coatings which, upon cracking, autonomously restore barrier, mechanical and electrical properties via a microcapsule based healing mechanism. Upon cracking, microcapsules in the crack path release the 'healing' solvent ethyl phenyl acetate (EPA), which locally swells the matrix, promoting crack closure and enabling the diffusion and subsequent reaction of the residual hardener in the vicinity of the crack. Two different self-healing coatings and two controls based on an electrically conductive epoxy resin with approximately 20% carbon nanotubes (CNTs) were fabricated. Electrochemical impedance spectroscopy was employed to evaluate the potential of the CNT and non-CNT containing encapsulated systems to restore relatively large cracks and thus restore the barrier function. An in-situ electro-tensile test in a microscope revealed that electrical conductivity and mechanical properties were restored to 64% (± 23) and 81% (± 39) respectively, which correlated to crack closure. Under appropriate testing conditions the system showed successive damage-heal events in terms of electrical conductivity.

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“…However, lower electrical conductivity, poor impact strength, and decreasing conductivity by humidity aging or normal use condition have been reported in reliability testing using silver paste as compared with tin-lead solder. [17] As it is difficult to use tin-lead soldering in microelectrodes for lead connections, more efforts to develop electrode-lead junctions better than silver pasting are needed. In addition, although the electrode-lead contact resistance caused by connection of microelectrodes to apparatus is also an empirically important factor, there have been few reports on "electrode-lead" contact resistance.…”

Section: Introductionmentioning

confidence: 99%

Normalized Contact Force to Minimize "Electrode-Lead" Resistance in a Nanodevice

Lee¹,

Bae²,

Lee³

et al. 2014

Bulletin of the Korean Chemical Society

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In this report, the contact resistance between "electrode" and "lead" is investigated for reasonable measurements of samples' resistance in a polypyrrole (PPy) nanowire device. The sample's resistance, including "electrode-lead" contact resistance, shows a decrease as force applied to the interface increases. Moreover, the sample's resistance becomes reasonably similar to, or lower than, values calculated by resistivity of PPy reported in previous studies. The decrease of electrode-lead contact resistance by increasing the applying force was analyzed by using Holm theory: the general equation of relation between contact resistance (R H ) of two-metal thin films and contact force (

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Nano-conductive Adhesives for Nano-electronics Interconnection

Cited by 25 publications

References 63 publications

Automated Identification of Plywood Using Embedded Inkjet-Printed Passive UHF RFID Tags

Automated Identification of Plywood Using Embedded Inkjet-Printed Passive UHF RFID Tags

Electrically conductive self-healing polymer composite coatings

Normalized Contact Force to Minimize "Electrode-Lead" Resistance in a Nanodevice

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