NanoTechnology: Materials, Processes & Devices

Research that includes:

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

BPN996: Reconfigurable Photonic Crystal Cavity Array (New Project)

Yu-Lung Tang
Lukasz Komza
Hanbin Song
Yiyang Zhi
Xueyue (Sherry) Zhang
2023

Photonics resonator arrays have been shown as building blocks in various aspects such as information processing, sensing, metamaterials, nonlinear optics, and optomechanics. Photonics crystal cavities are especially useful in quantum computation to Purcell enhance the optical emission rate of quantum emitters, owing to their high-quality factor and small mode volume. However, due to fabrication disorder, post-fabrication tuning methods are required and limit the controllability of photonic crystal cavities. In this project, we will address this challenge by designing a bus...

BPN997: Probing Surface Piezoelectricity with Surface Acoustic Waves (New Project)

Haoxin Zhou
Kadircan Godeneli
Zihuai Zhang
Mutasem Odeh
2023

Piezoelectricity is the ability of certain materials to generate an electric polarization in response to applied mechanical stress or generate a mechanical deformation in response to applied voltage. It has broad applications where transduction between electrical and mechanical energy is required. It may also play a negative role and affect the performance of electronic devices. An example is the piezoelectric loss in superconducting qubits. While bulk piezoelectricity usually only exists in materials without inversion symmetry, theoretical calculation predicted that the...

BPN995: Growth of Metal Organic Framework (MOF) Crystals under Microgravity and their Prospects for Chemical Sensing (New Project)

Liam McDonough
Pat Taedullayasatit
Sai Munagavalasa
Yaprak Ozbakir
2023

Metal-organic frameworks (MOFs) are porous, high surface area materials that consist of metal-cluster nodes connected by organic linkers to form highly ordered structures with various pore geometries and chemical properties. Due to their unique and tunable structure, MOFs have shown substantial promise in a broad range of applications, including chemical sensing, gas adsorption and separation, and catalysis. To investigate the intrinsic properties of MOFs for their sensing performance, single crystals are ideal platforms that mitigate the impact of defects, impurities, and grain...

BPN967: Quantum Emitters in Silicon Photonics

Lukasz Komza
Yu-Lung Tang
Hanbin Song
Zihuai Zhang
2023

The G center, an atom-like single-photon emitter in silicon, has emerged as a promising candidate for realizing a quantum-coherent light source in integrated photonics. Our recent work demonstrating two-photon quantum interference with a single waveguide-integrated G center highlights the utility of G centers for photonic quantum information applications. However, improvements in the optical coherence properties of the G center must be achieved to enable its technological implementation. We will address this challenge by leveraging the integration capabilities of the silicon platform...

BPN931: Multiplexed Electroluminescent Device for Emission from Infrared to Ultraviolet Wavelength

Vivian Wang
2023

Using electroluminescence as a metrology method could have many advantages for on-chip characterization of chemical composition, where the need for an on-chip light source can be eliminated and materials with different excitation energies can be characterized by the same device. However, the range of materials that can be used in electroluminescent devices is typically limited due to challenges related to material processing and band alignment. In this project, we aim to develop a multiplexed electroluminescent device that can produce electroluminescence from infrared to ultraviolet...

BPN989: Defect-Induced Piezoelectricity in Silicon

Zihuai Zhang
Kadircan Godeneli
2023

Silicon, a mature platform for the semiconductor industry, has become a leading platform for future quantum technologies. As a high-purity material, it serves as a low-noise host for a variety of quantum defects. As a low-loss material, it is a desirable substrate and material platform for next generation quantum devices. However, the lack of piezoelectricity in silicon, due to its centro-symmetric structure, poses challenges for its electromechanical applications. For example, one common approach to realize electromechanics in silicon relies on hybrid integration with a different...

BPN988: Modulation of Optoelectronics in Quantum Dot Film

I K M Reaz Rahman
Naoki Higashitarumizu
2023

Core/shell quantum dots are known to have high photoluminescence quantum yield for their passivation through thicker shell by suppressing surface trap states. In spite of their excellent exciton dynamics, these bright quantum dots tend to suffer from stability issues and degradation over time. Here we investigate their photo-physical properties due to charge injection, which leads to unfavorable recombination pathways through charged excitons. This provides an additional tuning knob for modulation of their photoluminescence quantum yield after synthesis, thereby offering a means of...

BPN993: Safe and Deformable Soft Batteries

Peisheng He
Jongha Park
2023

Safe and deformable soft batteries are desirable for modern products that call for good safety features such as cell phones and good conformability to be embedded onto irregular surfaces in electronics systems. Current Li-ion batteries on the commercial market are rigidly packaged and hermetically sealed to prevent: 1) the intrusion of moistures which degrade performances; and 2) the leakage of toxic and flammable electrolytes due to mechanical damages. On the other hand, various deformable/stretchable batteries have been reported in research articles and they have shown good...

BPN940: Self-Healing Materials for Sensing and Energy Harvesting Applications

Peisheng He
Zihan Wang
2023

Animal skins often possess both functions of sensing and actuating to detect external stimulations and change shapes when needed, respectively. Furthermore, many animals, such as jellyfish and leptocephalus (eel larvae) have tissues that are transparent and ultra-stretchable, which are difficult to build in synthetic sensors and actuators. Moreover, all these living skins have self-healing properties, i.e. to restore their critical functions after being damaged. On the contrary, artificial electronic systems are often brittle and non-transparent. As such, biomimetic, skin-like materials...

BPN984: Large-Area Processable Luminescent Black Phosphorus

Naoki Higashitarumizu
Shu Wang
Kyuho Lee
2023

Black phosphorus (BP) is a promising material for optoelectronic applications due to its direct bandgap at all thicknesses, and low Auger recombination coefficient at high carrier densities. BP, being a two-dimensional material, lacks scalability, for which techniques for its large-area processing are important. In this work, we find methodologies to utilize this material for large-scale optoelectronic applications.

Project currently funded by: Federal