Method for developing thick β-Ga2O3 films on (001) Ga2O3 substrates using (AlxGa1-x)2O3 buffer layer
TS-068473 — The Need
β-Ga2O3 has spurred substantial interest in semiconductors and transistors in high-power/high-frequency electronics and ultraviolet optoelectronics. However, there exists a critical challenge of growing high-quality, thick layers of gallium oxide (Ga2O3) on Ga2O3 substrates. Existing …
- College: College
of
Engineering
(COE)
- Inventors: Zhao, Hongping; Meng, Lingyu; Yu, Dong Su
- Licensing Officer: Randhawa, Davinder
A device for improving the breakdown performance of gallium oxide semiconductors
TS-067551 — Gallium Oxide (Ga2O3) is an inorganic compound with semi-conductivity properties (e.g., a large bandgap) that can be used for developing power electronics, UV photodetectors, solar cells, and sensors. βeta-Ga2O3, a polymorph, has a distinct advantage over other semiconductors that have high cri…
- College: College
of
Engineering
(COE)
- Inventors: Dheenan, Ashok; Dhara, Sushovan; Rajan, Siddharth
- Licensing Officer: Zinn, Ryan
Open Circuit Voltage Photodetector
TS-065426 — Photodetectors are devices that detect light and convert it into an electrical signal. They operate based on the photoelectric effect, in which photons (light particles) strike the semiconductor material, creating electron-hole pairs that lead to the flow
of electrical current that can be measured.
Existing photodetectors are susceptible to various noise sources, such as thermal and electronic. The noise can degrade the signal-to-noise ratio and affect the accuracy of measurements, particularly in low-light conditions.
This technology is an open-circuit voltage photodetector (OCVP) that…
- College: College
of
Engineering
(COE)
- Inventors: Krishna, Sanjay; Fuller, Earl; Kazemi, Alireza; Khalil, Waleed; Ronningen, TJ; Smith, Dale "Shane"; Specht, Teressa; Tantawy, Ramy "Ramy"
- Licensing Officer: Zinn, Ryan
Monolithically Integrated Tunnel Junction-Based GaN Light Emitting Transistors
TS-065398 — Emissive display technologies (e.g., OLEDs) are display technologies that emit light directly to produce images. Unlike reflective displays, which rely on external light sources, emissive displays generate light, resulting in vibrant and high-contrast visuals. These next-generation displays are used in several applications, including mobile devices, AV/VR headsets, and wearable devices.
Although emissive displays are integrated into many electronic devices, they face some challenges. One of the primary issues is the integration of LEDs and electronic drivers when scaling into mesa dimensions. The mesa is a crucial parameter in display manufacturing as it determines the size of th…
- College: College
of
Engineering
(COE)
- Inventors: Rajan, Siddharth; Jamal-Eddine, Zane; Joishi, Chandan "Chandan"; Rahman, Sheikh Ifatur
- Licensing Officer: Zinn, Ryan
Bio-Matched Horn: A Novel 1-9 GHz On-Body Antenna for Low-Loss Biomedical Telemetry with Implants
TS-065135 — The use of wearable health devices has more than tripled in recent years due to the ability of these products to collect health data to detect potential health events (e.g., heart attacks), manage chronic diseases, and track physical activity. Wearable technologies have been shown to decrease the nu…
- College: College
of
Engineering
(COE)
- Inventors: Blauert, John; Kiourti, Asimina
- Licensing Officer: Randhawa, Davinder
Invention of ultra-wide bandgap oxide semiconductor with p-type conductivity
TS-063961 — The Need
In the realm of power device technologies, addressing the growing demand for efficient, high-performance semiconductors is paramount. The current gap in the availability of a p-type β-Ga2O3 semiconductor poses a significant challenge, hindering the progress of device fabrication metho…
- College: College
of
Engineering
(COE)
- Inventors: Zhao, Hongping; Zhang, Kaitian
- Licensing Officer: Randhawa, Davinder
Ultrawide bandgap oxide semiconductor LiGaO2 with p-type conductivity for power device applications
TS-063784 — The Need
In the realm of power electronics, the industry is seeking advanced semiconductor materials that can address the ever-growing demand for high power density and high-frequency applications. Beta phase gallium oxide (β-Ga2O3) with an ultrawide bandgap (UWBG) of approximately 4.8 eV emer…
- College: College
of
Engineering
(COE)
- Inventors: Zhao, Hongping; Zhang, Kaitian
- Licensing Officer: Randhawa, Davinder
Suppressing background carbon incorporation using laser-assisted MOCVD growth of nitride-based semiconductors
TS-063717 — The Need
In the world of semiconductor material systems, the demand for advancements in optoelectronic and power electronic devices is ever-growing. The fabrication of semiconductor films, crucial for these applications, primarily relies on epitaxy technologies such as hydride vapor phase epitaxy (…
- College: College
of
Engineering
(COE)
- Inventors: Zhao, Hongping; Chen, Zhaoying; Zhang, Yuxuan
- Licensing Officer: Randhawa, Davinder
High-K Dielectric barriers to suppress internal photoemission photocurrents
TS-063471 —
In an increasingly digital world, the demand for efficient and reliable photodetectors is paramount. These devices are critical for a variety of applications, from medical imaging to defense systems. However, traditional photodetectors often struggle with low UV-visible rejection, limiting their e…
- College: College
of
Engineering
(COE)
- Inventors: Rajan, Siddharth; McGlone, Joseph "Joe"; Wriedt, Nathan
- Licensing Officer: Zinn, Ryan
Monolayer Etching of Wurtzite GaN/AlGaN/AlN Using Cyclic O2 Plasma and Atomic Ga/Al Flux Exposure
TS-063466 —
In the rapidly evolving world of semiconductor technology, there is a growing demand for efficient and precise methods of etching Gallium Nitride (GaN)-based semiconductors. Traditional wet and dry etching processes often damage the GaN, compromising the quality and performance of the final produc…
- College: College
of
Engineering
(COE)
- Inventors: Rajan, Siddharth; Dheenan, Ashok; Rahman, Sheikh Ifatur; Wriedt, Nathan
- Licensing Officer: Zinn, Ryan
3D subwavelength photonic detector coupled with dielectric resonator antenna
TS-063055 — New LWIR detector combining a dielectric resonator antenna (DRA) with a semiconductor absorber for improved signal, noise, and speed performance
Long Wavelength Infrared (LWIR) detectors are crucial in various fields, but traditional detectors face significant drawbacks in terms of size, thermal noise, and coupling efficiencies. Current detectors use cryogenic cooling in the form of mercury cadmium telluride (MCT), a significant drawback d…
- College: College
of
Engineering
(COE)
- Inventors: Krishna, Sanjay; Ball, Christopher; Kazemi, Alireza; Ronningen, TJ; Shu, Qingyuan
- Licensing Officer: Zinn, Ryan
Laser Imaging of Gases for Real-Time Determination of Concentration and Location
TS-063051 — A stand-
off gas detection system with active, laser-based sensing and imaging capabilities for commercial use
There is a critical need for a reliable, cost-effective, and safe method to detect gas leaks, particularly in gas lines to ensure the safety of service providers and customers. Distribution companies receive over 100,000 calls per year responding to gas odors, indicating potential leaks. The major…
- College: College
of
Engineering
(COE)
- Inventors: Krishna, Sanjay; Ball, Christopher; Fink, Douglas "Rudy"; Fuller, Earl; Mooney, Douglas; Ringel, Brett; Ronningen, TJ
- Licensing Officer: Randhawa, Davinder
Surface barrier engineering using AlGaO/GaO
TS-063001 — A new method
of surface barrier
engineering that introduces a linearly graded (AlxGa1-x)2O3 cap layer. This improves the Schottky barrier at the surface which results in a higher breakdown field.
Ga2O3 is a promising ultra-widebandgap semiconductor with many applications in power switching and RF electronics. Realizing those improvements requires efficient field management design to prevent premature breakdown due to electric field crowding at the device edges. There is a need to develop t…
- College: College
of
Engineering
(COE)
- Inventors: Rajan, Siddharth; Dhara, Sushovan
- Licensing Officer: Zinn, Ryan
Substrates for vertical power devices
TS-062951 — The Need
In today's fast-paced technological landscape, there is an ever-growing demand for high-performance vertical power devices with enhanced breakdown voltage capabilities, exceeding 20 kV. Meeting this commercial need requires an innovative approach to semiconductor drift layer developmen…
- College: College
of
Engineering
(COE)
- Inventors: Zhao, Hongping; Bhuiyan, A F M Anhar Uddin; Meng, Lingyu
- Licensing Officer: Randhawa, Davinder
GaAsSb-AlGaAsSb Heterostructure Avalanche Photodiode
TS-062893 — A room temperature, ultra-high gain (M=278, λ=1550 nm, V=69.5 V, T=296 K) linear mode avalanche photodiode (APD) on an InP substrate using a GaAs0.5Sb0.5/Al0.85Ga0.15As0.56Sb0.44 separate absorption charge and multiplication (SACM) heterostructure.
An APD is a semiconductor-based analog of the photomultiplier. APDs exploit the impact ionization phenomenon and transform infrared (IR) light (l > 850 nm) into photocurrent. APDs have wide applicability; however, existing APDs have insufficient sensitivity and relatively high excess noise and …
- College: College
of
Engineering
(COE)
- Inventors: Krishna, Sanjay; Jung, Hyemin; Lee, Seunghyun
- Licensing Officer: Randhawa, Davinder
Antimonide based Separate Absorption Charge and Multiplication Avalanche Photodiode
TS-062892 — A room temperature, ultra-high gain (M=278, λ=1550 nm, V=69.5 V, T=296 K) linear mode avalanche photodiode (APD) on an InP substrate using a GaAs0.5Sb0.5/Al0.85Ga0.15As0.56Sb0.44 separate absorption charge and multiplication (SACM) heterostructure.
An APD is a semiconductor-based analog of the photomultiplier. APDs exploit the impact ionization phenomenon and transform infrared (IR) light (l > 850 nm) into photocurrent. APDs have wide applicability; however, existing APDs have insufficient sensitivity and relatively high excess noise an…
- College: College
of
Engineering
(COE)
- Inventors: Krishna, Sanjay; Jung, Hyemin; Lee, Seunghyun
- Licensing Officer: Randhawa, Davinder
Lateral Interband Type-II Engineered (LITE) Detector
TS-062847 —
Avalanche photodiodes (APDs) that target a wavelength of 1550 nm have several applications ranging from optical communications to imaging to single photon detection. There is increasing interest in APDs for longer wavelengths. A distinctive feature of an APD is high sensitivity due to the gain ach…
- College: College
of
Engineering
(COE)
- Inventors: Krishna, Sanjay; Kodati, Sri Harsha; Lee, Seunghyun; Ronningen, TJ
- Licensing Officer: Randhawa, Davinder
Light Source in Silicon Photonics
TS-062691 —
The continued push for high speed, low power, and compact solutions has given rise to the field of integrated optics/photonics, which aims to combine the high bandwidth and low loss transmission of fiber optic technology with the large device density and high production volume of modern microelect…
- College: College
of
Engineering
(COE)
- Inventors: Reano, Ronald; Patton, Ryan; Wood, Michael
- Licensing Officer: Zinn, Ryan
RF Energy Harvesting Wireless Mobile Device Charger
TS-062601 —
Only a small fraction of the radio frequency (RF) energy transmitted by smartphones and other wireless devices is used to communicate with a wireless access point. It would be useful to collect or harvest the unused RF signals in order to convert them to direct current (DC) power and supplement th…
- College: College
of
Engineering
(COE)
- Inventors: Chen, Chi-Chih; Koksal, C. Emre; Shroff, Ness; Tallos, Roland
- Licensing Officer: Zinn, Ryan
Passive RF Rectifier Circuit Design with Harmonic Harvester
TS-062596 —
Conventional rectifying circuit designs convert alternating-current (AC) signals into direct-current (DC) signals via the used of diodes. Low-barrier Schottky diodes are used in low AC power cases such as with ambient radio frequency (RF) signals. Ideally, each diode is only turned on during the p…
- College: College
of
Engineering
(COE)
- Inventors: Chen, Chi-Chih
- Licensing Officer: Zinn, Ryan
Utilization of Inductors in Electronics Circuits as Magnetohydrodynamics Pumps for Liquid Metal based Cooling
TS-062498 — Novel integrated inductor-based magnetohydrodynamic (MHD) pumps containing liquid metal coolant significantly enhance the thermal management
of large-scale, complex electronic systems housed in confined spaces
Conventional thermal management methods such as air-cooling and liquid cooling methods commonly used for electronics present in laptops, desktop computers, and smaller electronic configurations show limitations when scaled up for complex electronics architectures. High-power and high-voltage elect…
- College: College
of
Engineering
(COE)
- Inventors: Wang, Jin; Fan, Junchong
- Licensing Officer: Ashouripashaki, Mandana
Utilization of Interconnections in Electronic Circuits as Magnetohydrodynamic Pumps for Liquid Metalbased Cooling
TS-062494 — A novel magnetohydrodynamic (MHD) pump-based thermal management system design where integration
of the cooling apparatus using electronic circuit interconnections achieves improved thermal management at a lower cost.
Newer applications incorporating high-power electronics designs face greater thermal management challenges and impact systemic stability and reliability. Enhanced cooling techniques in these complex electronic systems rely on liquid cooling instead of air cooling. However, liquid cooling approache…
- College: College
of
Engineering
(COE)
- Inventors: Wang, Jin; Fan, Junchong
- Licensing Officer: Ashouripashaki, Mandana
Method to Create Patterned Thin Films of Lithium Niobate for Hybrid Integrated Photonics
TS-062492 —
Photonic integration is driven by demand for smaller size, lower cost, lower power consumption, easier assembly, higher reliability, and greater data density in modern photonic devices and systems. Among the many platforms, silicon photonics is particularly promising for photonic integration due t…
- College: College
of
Engineering
(COE)
- Inventors: Reano, Ronald; Chen, Li
- Licensing Officer: Zinn, Ryan
Use of electromagnetic signature to determine the type of integrated circuit
TS-062488 —
Currently, the main method used to detect counterfeit integrated circuits (IC's) is a very simplistic approach based on visual inspection. Unfortunately, many sophisticated counterfeit IC's are indistinguishable from authentic since visually they look almost exactly the same.
Dr. Robert…
- College: College
of
Engineering
(COE)
- Inventors: Lee, Robert; Chapman, Gregg; Nechiyil, Aditya
- Licensing Officer: Zinn, Ryan
Formation of carbon containing semi-insulating layers in β-Ga2O3 based structures and devices
TS-061850 — High-quality beta-gallium oxide (β-Ga2O3) based semi-insulating layers enable high power/high-frequency electronics, ultraviolet optoelectronics, and more.
The Need
β-Ga2O3 has spurred substantial interest in semiconductors and transistors in high-power/high-frequency electronics and ultraviolet optoelectronics. However, challenges exist in the controlled doping of semi-insulating layers of β-Ga2O3, limiting the material’s full potenti…
- College: College
of
Engineering
(COE)
- Inventors: Zhao, Hongping; Bhuiyan, A F M Anhar Uddin; Meng, Lingyu
- Licensing Officer: Randhawa, Davinder
A lightweight, miniaturized, and portable readout circuits for tracking LRC-based wireless sensor
TS-061832 — A portable and lightweight readout circuit designed for use with LRC-based wireless sensors and in conjunction with other commonly used devices (e.g., smartphone, laptop, and tablet)
The Need
Conventional vector network analyzers are bulky and expensive and tend to limit the ability to be used for daily tracing or high-frequency health status tracking in people. To overcome this and other limitations present in the cumbersome designs of today, compact-sized devices that take ad…
- College: College
of
Engineering
(COE)
- Inventors: Li, Jinghua; Liu, Tzu Li
- Licensing Officer: Ashouripashaki, Mandana
Development of thick β-(AlxGa1-x)2O3 films with low-Al content for vertical power devices
TS-061767 — Current semiconductor materials used in power devices are reaching their performance limits. Inventors at OSU have developed a new method
of fabricating thick β-(AlxGa1-x)2O3 films to enable low-Al content. The result is a lower cost
of production and the ability to support next-generation optoelectronic and high-power device applications.
The Need
Currently, β-Ga2O3 is used as the semiconductor material for developing next-generation electronic devices to support various high-power applications ranging from telecommunication to electric vehicles (EVs). Yet, the use of β-Ga2O3 is introducing significant production costs…
- College: College
of
Engineering
(COE)
- Inventors: Zhao, Hongping; Bhuiyan, A F M Anhar Uddin; Meng, Lingyu
- Licensing Officer: Randhawa, Davinder
High Efficiency LED Designs Using Quantum Well Engineering
TS-057127 — Achieving high efficiency LEDs with green, amber and longer wavelengths using III-nitride/II-IV-nitride heterostructures as the active media.
Although extensive research and development over the past two decades has resulted in close to 100% external quantum efficiency (EQE) of InGaN based blue light emitting devices, efficiency of the longer visible wavelength emitting devices has remained relatively low. Spontaneous polarization origi…
- College: College
of
Engineering
(COE)
- Inventors: Zhao, Hongping; Zhang, Kaitian
- Licensing Officer: Randhawa, Davinder
Weak Field Skyrmion Nucleation for Spintronic Memory Devices
TS-054326 — Magnetic skyrmions are unique and stable magnetic spin structures extensively studied in condensed matter physics. They are actively being developed due to their potential application in advanced memory chips. These skyrmion-based memory structures have advantages such as high density, low energy consumption, and resistance to disturbances, making them an attractive option for next-generation data storage.
Although skyrmions have the potential to revolutionize the memory industry, they are currently limited by materials and manufacturing practices. Hence, it is essential to identify new materials where small, stable skyrmions can be reliably manufactured and manipulated.
This technology produces …
- College: College
of
Engineering
(COE)
- Inventors: Wang, Binbin; McComb, David
- Licensing Officer: Zinn, Ryan
Modular Dc Circuit Breaker with Integrated Energy Storage for Future Dc Networks
TS-051200 —
Traditional AC distribution is not suitable for a wide range of applications in regard to efficiency, cost, and power carrying capacity compared to alternative distributions. Low voltage distribution suffers from high transmission losses due to higher current requirements necessitating thicker, he…
- College: College
of
Engineering
(COE)
- Inventors: Wang, Jin; Na, Risha; Zhang, Yue
- Licensing Officer: Ashouripashaki, Mandana
Scalable laser-assisted MOCVD chamber design with laser array input
TS-050244 — A design
of scalable laser-assisted MOCVD chamber for III-nitrides and other semiconductors with a laser array input.
III-nitrides represent an important semiconductor material system for both optoelectronic and power electronic device applications. Advantages for III-nitrides include high electron saturation velocity, high critical electric field, high radiation resistance and decent thermal performance. Therefo…
- College: College
of
Engineering
(COE)
- Inventors: Zhao, Hongping; Chen, Zhaoying
- Licensing Officer: Randhawa, Davinder
Fiber-to-fiber platform for multi-layer ferroelectric on insulator waveguide devices
TS-050208 — The invention is a fiber-to-fiber solution that allows the advantages
of lithium niobate on insulator integrated photonic chips to be exploited in real world fielded systems.
Technology is advancing faster than ever, with major demand for instant communication and instant information among other industries. In order to facilitate this ever-growing industry, a technology called waveguides were invented. A waveguide confines the wave to propagate in one dimension, so tha…
- College: College
of
Engineering
(COE)
- Inventors: Reano, Ronald; Nagy, Jonathan "Tyler"; Patton, Ryan; Prabhakar, Karan
- Licensing Officer: Zinn, Ryan
Device for Harvesting Vibration Energy to Power Remote Sensors or Feed the Power Grid
TS-049909 — A control method based upon properties
of linear systems to manipulate the vibrational amplitudes and frequencies
of structural systems by exploiting piecewise-linear (PWL) nonlinearities.
Energy harvesting from system vibrations is considered a promising green energy source with the capacity to both self-power small-scale devices and fulfill the need of large-scale electricity generation. A recent report by BCC research found that the markets for Vibration, Displacement, and Mechan…
- College: College
of
Engineering
(COE)
- Inventors: D'Souza, Kiran; Tien, Meng-Hsuan
- Licensing Officer: Zinn, Ryan
Dielectric heterojunction device
TS-048644 —
The potential of different materials for vertical power switching is often assessed by calculating the Baliga Figure of Merit (BFOM). In the case of wide and ultra-wide bandgap materials, the high breakdown fields and the relatively good transport properties make the BFOM significantly higher than…
- College: College
of
Engineering
(COE)
- Inventors: Rajan, Siddharth; Moore, Wyatt; Xia, Zhanbo
- Licensing Officer: Zinn, Ryan
Capacitive Sensing Method for Integrated Circuit Identification and Authentication
TS-048641 — A method
of authenticating an IC die’s origin and uniquely identifying each die with an intrinsic unclonable value through measurement
of on-chip capacitance values
Hardware security in Integrated Circuit (IC) designs is of increasing importance in dealing with the insecure, expanding global supply chain of these parts. The ability to trace the origin of a die, combined with the capability to uniquely identify each die provides valuable quantitative measures …
- College: College
of
Engineering
(COE)
- Inventors: Khalil, Waleed; Kines, Michael
- Licensing Officer: Ashouripashaki, Mandana
A Lightweight Low Inductance Power Module with Insulated Baseplates
TS-048588 — A lightweight power module that reduces loop stray inductance while maintaining good electrical insulation and thermal dissipation.
In conventional power module structures, the die is attached to the substrate, usually direct bonding copper (DBC). The ceramic substrate layer provides electrical insulation between the circuit and cooling structure and attaches to a conductive baseplate material (Cu, Al, AlSiC) to dissipate heat…
- College: College
of
Engineering
(COE)
- Inventors: Lyu, Xintong; Wang, Jin
- Licensing Officer: Ashouripashaki, Mandana
A Model Based Assessment Approach and an Automation Environment for Qualification of Embedded Digital Devices
TS-042856 — A Framework and Automatization process designed to determine the functionality
of Embedded Digital Devices.
As our technology becomes increasingly complex, so does the quantity and variation of the Embedded Digital Device [EDD] components that are required within the project. Because not every device is made perfectly to specifications due to a propagation of random error, it is important to have a dive…
- College: College
of
Engineering
(COE)
- Inventors: Smidts, Carol; Diao, Xiaoxu; Li, Boyuan
- Licensing Officer: Mess, David
Quantum Well Design for Red-Emitting InGaN LEDs
TS-042441 — The quantum well design is incorporated within a red-emitting InGaN QW LED, an LED type that usually cannot efficiently emit wavelengths larger than blue/green. The LED can be incorporated into a same-material RGB platform for white LEDs, because the well design increases efficiency and decreases indium composition compared to similar wavelength InGaN LEDs.
Blue-emitting InGaN quantum well (QW) LEDs now have 69% external quantum efficiency, but increasing the emitted-wavelength decreases the efficiency significantly. The inversion asymmetry of the InGaN lattice increases the induced strain, which in turn increases the piezoelectric effect. Charge bui…
- College: College
of
Engineering
(COE)
- Inventors: Zhao, Hongping; Karim, Md Rezaul
- Licensing Officer: Randhawa, Davinder
Field Effect Transistor for High Power Millimeter-Wave Applications
TS-042088 — Transistor structure with high breakdown voltage at high frequency operation
A new generation of high throughput, efficient communication networks and sensors can be enabled through the use of millimeter scale wave regimes. However, current semiconductor materials (such as AlGaN/GaN) have a reduction in breakdown voltage as operating frequency increases, which leads to low…
- College: College
of
Engineering
(COE)
- Inventors: Rajan, Siddharth; Wang, Caiyu; Xia, Zhanbo
- Licensing Officer: Zinn, Ryan
Referenceless and Frequency Independent Radio Reciever
TS-037378 — A radio receiver that operates without the need for locally generated reference signals.
A radio frequency signal may typically consist of a single frequency carrier signal, modulated with some information signal. The purpose of a receiver is to extract the information signal from the carrier. This is commonly accomplished by mixing the received signal with one or more local reference…
- College: College
of
Engineering
(COE)
- Inventors: Novak, Markus; Bojja venkatakrishnan, Satheesh; Volakis, John
- Licensing Officer: Zinn, Ryan
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