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Search Results - i-wei chen

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pH Sensitive Nanoparticles for Drug Delivery
Technology Overview: Many agents used for oncology are either vulnerable to enzymatic attack or are poorly water-soluble, making them difficult to deliver to a tumor site. This invention describes a novel pH-sensitive peptide-based nanoparticle which can provide a precisely targeted method for drug delivery. Rather than relying on uptake of the...
Published: 3/20/2020   |   Inventor(s): I-Wei Chen
Keywords(s):  
Category(s): Therapeutics & Vaccines
Non volatile resistance switching Si based thin film devices
Technology Overview: Current non-volatile memory products, a $30B market, are dominated by flash memories. However, flash memory is facing challenges of unable to scale down for future market. Resistance-switching cell is one of the most promising contenders for replacing flash memory. The new member cell developed at Penn is a resistance-switching...
Published: 3/19/2020   |   Inventor(s): I-Wei Chen
Keywords(s):  
Category(s): Hardware & Circuits & Sensors
Resistance Switching Materials for Next Generation Non-Volatile Memory
Problem: Flash memory is beginning to reach its performance limit. Other emerging memory technologies face challenges that limit their practical use. Resistance switching memory is a leading contender for the next generation of computer memory, but most resistance switching materials are prone to filamentary breakdown, which causes failure and limits...
Published: 1/23/2020   |   Inventor(s): I-Wei Chen
Keywords(s): Semiconductors
Category(s): IT & Communication & Networking, Materials
Composite materials for bone and tissue reconstruction
Problem: Materials used for bone transplants, and as scaffolds for tissue restoration, need particular features to work well. Current materials have shortcomings that complicate treatment. Dried silica gels are very attractive because of their nanometer-sized pores, but they lack larger pores that exist in natural bone. Composite materials may...
Published: 11/27/2018   |   Inventor(s): Hoon Choi, I-Wei Chen
Keywords(s):  
Category(s): Medical Devices, Therapeutics & Vaccines, Materials
Ruthenate materials with large magnetoresistance effects
Problem: Magnetoresistive materials can change their electrical resistance when subject to an applied magnetic field. This property can be used for non-volatile resistance switching memory in which high and low resistance states are used to encode data. A similar effect called EPIR (electric-pulse induced resistance) can be used to change material...
Published: 11/27/2018   |   Inventor(s): I-Wei Chen
Keywords(s):  
Category(s): Materials, Hardware & Circuits & Sensors