NanoTechnology: Materials, Processes & Devices

Research that includes:

  • Development of nanostructure fabrication technology
  • Nanomagnetics, Microphotonics
  • CMOS Integrated Nanowires/Nanotubes (CMOS-Inn)

BPN936: Hafnium Diboride-Based Gas Sensor

Steven R. DelaCruz
Yong Xia
Siyi Cheng
2019

While the transition metal oxides and dichacogenides have been extensively used as sensing materials, the transition metal diborides (TMDBs) have not been explored to any appreciable extent. As a class, TMDBs possess a variety of unique properties, including very high melting points, high thermal and electrical conductivities, and good corrosion resistances, and therefore hold promise as materials for the sensing of harmful gases or at elevated temperatures....

BPN927: CeO2/Au Nanostructured Material for Electrochemical Detection of Dopamine

Yuhui Xie
2019

Dopamine (DA) plays a significant role in the central nervous system, the loss of which is linked to various problems, e.g., schizophrenia, drug addiction and Parkinsons disease. Accordingly, the development of sensitive and selective detection method for DA is of great interest. Electrochemical DA detection has gained increasing attention due to its operation simplicity and rapid response. Despite these advantages, electrochemical methods often lack...

BPN860: Laser Printed Carbide-Graphene for Paper Electronics

Yu Long
Minsong Wei
Renxiao Xu
Junwen Zhong
Peisheng He
Fanping Sui
2019

Paper electronics have attracted researchers’ attention in recent years for its potential advantage of disposability, foldability, low density and low cost. In our previous studies, we have shown a drastically different approach by a direct-write laser patterning process on paper to realize various basic device applications, such as a foldable triboelectricity generator and a folded supercapacitor as the potential paper-based power source for paper electronics, a wireless...

BPN856: Broadly-Tunable Laser with Self-Imaging Three-Branch Multi-Mode Interferometer

Guan-Lin Su
2019

Tunable lasers with high side-mode suppression ratios (SMSRs) are cost-effective solutions to replace multiple DFB lasers in wavelength-division multiplexing (WDM) systems. Two arm interference-based devices, such as C3- and Y-branch lasers, have advantages over grating- and ring-resonator-based counterparts in terms of cost and fabrication complexities; however, it is fundamentally difficult to achieve high SMSRs and wide tuning ranges simultaneously. In our proposed...

BPN909: High Quality Synthetic Monolayer Semiconductor

Hyungjin Kim
2019

In recent years, there have been tremendous advancement in the growth of monolayer transition metal dichalcogenides (TMDCs) by chemical vapor deposition (CVD). However, obtaining high photoluminescence quantum yield (PL QY), which is the key figure of merit for optoelectronics, is still challenging in the grown monolayers. Specifically, the as-grown monolayers often exhibit lower PL QY than their mechanically exfoliated counterparts. In this work, we demonstrate synthetic tungsten diselenide (WSe2)...

BPN928: Black Phosphorous Based Infrared Light Emitting Diodes

Niharika Gupta
2019

Two-dimensional (2D) materials such as MoS2 and black phosphorous (bP) have shown promise for high performance optoelectronic and electronic applications, due to their naturally terminated surfaces. Unlike the majority of 2D materials, which are only direct bandgap at the monolayer limit, bP maintains a direct bandgap for all thickness, which ranges from 1.4 to 0.3 eV. This property can be leveraged to demonstrate light emitting diodes (LEDs) based on bP/MoS2 heterostructures. High EQE can be...

BPN932: A Fully Integrated and Self-Powered Smartwatch for Continuous Sweat Glucose Monitoring

Jiangqi Zhao
Yuanjing Lin
2019

Wearable devices for health monitoring and fitness management have foreseen a rapidly expanding market, especially those for noninvasive and continuous measurements with real-time display that provide practical convenience and eliminated safety/infection risks. Herein, a self- powered and fully integrated smartwatch that consists of flexible photovoltaic cells and rechargeable batteries in form of a “watch strap”, electrochemical glucose sensors, customized circuits and display units integrated into a “dial” platform, is...

BPN942: Metal-organic Frameworks with Three-dimensional Ordered Superstructures as Plasmonic Sensing Materials

Zhou Li
Adrian Davey
Aifei Pan
2020

Assembly of particles into long-range, three-dimensional (3D), ordered superstructures is crucial for the design of a variety of materials including plasmonic sensing materials. Spherical colloidal particles (mainly silica or polymers such as polystyrene and acrylates) have traditionally been used to build assembled superstructures. Recently, great progress has also been achieved in the assembly of spherical and polyhedral inorganic-based particles. However, this progress has not led to the use of other families of purely organic or hybrid metal-organic...

BPN937: Nanoplasmonic PCR-based Rapid Precision Molecular Diagnostic Chip

Youngseop Lee
Wonseok Kim
2020

Emerging molecular diagnosis requires ultrafast polymerase chain reaction (PCR) on chip for rapid precise detection of infectious diseases, neurodegenerative diseases, cardiovascular diseases, or cancers. Here we report nanoplasmonic PCR-based rapid precision molecular diagnostic chip. The nanoplasmonic pillar arrays (NAPA) comprise gold nanoislands on the top and sidewall of large-scale glass nanopillar arrays. The nanoplasmonic pillars enhance light absorption of a white light- emitting diode (LED) over the whole visible range due to strong...

BPN929: Electrochemical Sensors with Reduced Drift and Enhanced Stability

Yuanjing Lin
2020

Development of reliable glucose sensors for noninvasive monitoring without interruption or limiting users’ mobility is highly desirable, especially for diabetes diagnostic which requires routine/long term monitoring. However, their applications are largely limited by the relatively poor stability. Herein, a porous membrane is synthesized for effective enzymes immobilization and it is robustly anchored to the modified nanotextured electrode solid contacts, so as to realize glucose sensors with significantly enhanced sensing stability and mechanical robustness....