Microcapsules Current Events

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Next-generation microcapsules deliver 'chemicals on demand'
Scientists in California are reporting development of a new generation of the microcapsules used in carbon-free copy paper, in which capsules burst and release ink with pressure from a pen. The new microcapsules burst when exposed to light, releasing their contents in ways that could have wide-ranging commercial uses from home and personal care to medicine.Their study appears in the Journal of the American Chemical Society, a weekly publication. (2009-10-28)

Developing better fabrication techniques for pH-responsive microcapsules
Researchers have developed a new method to create microcapsules, which are tiny droplets surrounded by a solid shell. The technique can be used to make microcapsules that respond to changes in pH, which are useful for applications such as anti-corrosion coatings. (2020-06-09)

New 'microcapsules' have potential to repair damage caused by osteoarthritis
A new 'microcapsule' treatment delivery method developed by researchers at Queen Mary University of London could reduce inflammation in cartilage affected by osteoarthritis and reverse damage to tissue. (2015-01-20)

Study of enzymatic chemical reactions may indicate how the first cells formed colonies
A novel investigation of how enzymatic reactions can direct the motion and organization of microcapsules may point toward a new theory of how protocells -- the earliest biological cells -- could have organized into colonies and thus, could have ultimately formed larger, differentiated structures. (2016-03-29)

Promising new method for producing tiny liquid capsules
Microcapsules for the storage and delivery of substances are tiny versions of the type of capsule used for fish oil or other liquid supplements. A new method for synthesizing microcapsules, reported in AIP Advances, creates microcapsules with a liquid core that are ideal for the storage and delivery of oil-based materials in skin care products. They also show promise in some applications as tiny bioreactors. In this new method, a surfactant-free microfluidics process is used. (2020-06-02)

Microcapsules gain a new power -- scavenging reactive oxygen species
Stable, biocompatible microcapsules have gained a new power -- the ability to scavenge reactive oxygen species. This may aid microcapsule survival in the body as the tiny polymer capsules carry a drug or other biomolecules. The microcapsules may also find use in antioxidant therapy or in industrial applications where scavenging of free radicals is needed. (2018-01-30)

Rice unveils 'green' microcapsule production method
Chemical engineers from Rice University have unveiled the most environmentally sensitive approach yet devised for making tiny hollow spheres called microcapsules. Dozens of companies are developing microcapsules - usually smaller than living cells - to deliver everything from drugs and imaging agents to perfumes and flavor enhancers. In this month's Advanced Materials, Rice's team describes a mix-and-shake procedure that produces microcapsules almost instantly at room temperature, under normal pressure, in water, and at mild pH values. (2005-05-26)

New 'self-exploding' microcapsules could take sting out of drug delivery
Belgian chemists have developed (2006-01-03)

Microcapsules open in tumor cells
Max Planck researchers channel microcapsules into tumor cells and release their contents using a laser impulse. (2006-08-23)

Cements that self-repair cracks and store latent heat energy
Cement (and derivatives thereof) is one of the materials most commonly used in construction, given its good performance at low cost. Over recent years, one part of scientific and technological research is aimed at incorporating additional functions into these materials. (2011-03-02)

Tiny capsules deliver
A tiny particle syringe composed of polymer layers and nanoparticles may provide drug delivery that targets diseased cells without harming the rest of the body, according to a team of chemical engineers. This delivery system could be robust and flexible enough to deliver a variety of substances. (2009-01-12)

A new system for treating type 1 diabetes mellitus
Thanks to an innovative system of magnetic microcapsule separation, the Nanobiocel-CIBER BNN research group of the UPV/EHU-University of the Basque Country in collaboration with the BIOMICS group, also of the UPV/EHU, has managed to reduce the volume of microcapsule implants containing insulin-producing pancreatic cells by nearly 80%. That way, the medical complications arising out of implanting large volumes of microcapsules are reduced and the treatment of type 1 diabetes mellitus is improved. (2019-05-10)

Magnetic stem cells for gene engineering
Russian and British scientists develop a technology to targeted deliver drugs to inflammation spot by magnet controlled stem cells. Native body cells joined magnetic microcapsules are very promising for cell therapy and gene engineering applications. (2016-12-28)

New recipe for self-healing plastic includes dash of food additive
Adding a food additive to damaged polymers can help restore them to full strength, say scientists at the University of Illinois who cooked up the novel, self-healing system. (2008-10-15)

Scientists develop new precise therapeutic leukemia vaccine
Researchers from the Institute of Process Engineering (IPE) of the Chinese Academy of Sciences and Zhujiang Hospital of Southern Medical University have developed a new type of precise therapeutic vaccine against leukemia. It utilizes self-healing polylactic acid microcapsules for co-encapsulating a new epitope peptide and PD-1 antibody. (2020-10-12)

Pitt team designs artificial cells that communicate and cooperate like biological cells, ants
University of Pittsburgh researchers designed (2010-07-19)

Thinner shells for delivering gentler therapeutic bursts
Releasing drugs that are packaged into microcapsules requires a significant amount of force, and the resulting burst can cause damage to human tissues or cause blood clots. A new technique creates lopsided microcapsule 'shells' that can burst and release their cargo at much lower pressure, making them safer for use in the body. (2019-09-23)

Biodegradable microcapsules deliver nerve growth factor to guide neuronal development
Researchers from Skoltech and their colleagues have demonstrated that nanoengineered biodegradable microcapsules can guide the development of hippocampal neurons in an in vitro experiment. The microcapsules deliver nerve growth factor, a peptide necessary for neuron growth. (2021-02-16)

Researchers develop high-performance cancer vaccine using novel microcapsules
Scientists from the Institute of Process Engineering (IPE) of the Chinese Academy of Sciences have developed a new therapeutic tumor vaccine based on self-healing polylactic acid microcapsules, which can efficiently activate the immune system and inhibit tumor development. (2020-05-22)

Drug-delivery microcapsules tagged with zirconium-89 can be tracked by PET imaging
Polymer and radionuclide chemists report major advance in microcapsule drug delivery systems. Their microcapsules -- labeled with radioactive zirconium-89 -- are the first example of hollow polymer capsules capable of long-term, multiday positron emission tomography imaging in vivo. In previous work, the researchers showed that the hollow capsules could be filled with a potent dose of the cancer drug doxorubicin, which could then be released by therapeutic ultrasound that ruptures the microcapsules. (2021-01-20)

Self-repairing materials
When a person suffers a minor wound, the human body reacts to close the opening, sending the blood platelets needed to the affected area -- and with no need in many cases for any external coagulant substance to be employed. This reaction of nature to damage suffered was the starting point for the development of self-repairing polymer materials with the capacity of recovering a good part of the properties lost and with no or with minimal external help. (2008-04-17)

Cancer targeted treatments from space station discoveries
A process investigated aboard the space station known as microencapsulation is able to more effectively produce tiny, liquid-filled, biodegradable micro-balloons containing specific combinations of concentrated anti-tumor drugs. (2014-02-27)

Microencapsulation produces uniform drug release vehicle
Consistently uniform, easily manufactured microcapsules containing a brain cancer drug may simplify treatment and provide more tightly controlled therapy, according to Penn State researchers. (2013-09-03)

Catalyst-free chemistry makes self-healing materials more practical
A new catalyst-free, self-healing material system developed by researchers at the University of Illinois offers a far less expensive and far more practical way to repair composite materials used in structural applications ranging from airplane fuselages to wind-farm propeller blades. (2007-11-27)

New method to identify microscopic failure
The Autonomous Materials Systems Group at the Beckman Institute for Advanced Science and Technology has recently found a new way to identify microscopic damage in polymers and composite materials before total failure occurs. (2016-08-17)

What's in your microcapsule? Tattoo ink -- and more
Brown University and Freedom-2, a New York City company developing inks to make safe, permanent removable tattoos, have reached a licensing agreement that gives Freedom-2 the rights to use the microencapsulation process perfected in the laboratory of Edith Mathiowitz for the purposes of making tattoo ink. But Mathiowitz's technique for coating particles in polymers has plenty of uses outside the tattoo parlor. (2007-07-09)

Self-healing electronics could work longer and reduce waste
University of Illinois engineers have developed a self-healing system that restores electrical conductivity to a cracked circuit in less time than it takes to blink. As a crack propagates, microcapsules filled with liquid metal break open and the liquid fills the gap, restoring electrical flow. The technology is especially attractive for applications where repair is impossible, such as a battery, or finding the source of a failure is difficult, such as an air- or spacecraft. (2011-12-20)

A self-healing protective coating for concrete
Scientists are reporting development of what they describe as the first self-healing protective coating for cracks in concrete, the world's most widely used building material. Their study on the material -- which is inexpensive and environmentally friendly -- appears in the journal ACS Applied Materials & Interfaces. (2013-02-20)

Iowa State, Ames Lab researcher developing bio-based polymers that heal cracks
Michael Kessler of Iowa State University and the Ames Laboratory is researching biorenewable polymers capable of healing themselves as they degrade and crack. The self-healing properties can increase material lifetimes and reduce maintenance. There are challenges, but Kessler thinks there's potential to develop new and effective materials. (2011-01-06)

Tiny drug-delivering capsules could sustain transplanted insulin-producing cells
A drug-carrying microsphere within a cell-bearing microcapsule could be the key to transplanting insulin-secreting pig pancreas cells into human patients whose own cells have been destroyed by type I diabetes. (2018-02-12)

Rice student earns top Texas nano honors
The Nanotechnology Foundation of Texas (NFT) has awarded Rice University doctoral student Vinit Murthy its 2006 George Kozmetsky Award for Outstanding Graduate Research in Nanotechnology for his co-discovery of a simple method to encapsulate any water-soluble compound easily and without damage. The Kozmetsky Awards, given annually to two Texas graduate students, are the first of their kind to be offered in the US to students working in nano-related fields. (2006-01-30)

Microcapsules like it hot and salty
Max Planck scientists in Potsdam are developing a new method using salt content and temperature to control the permeability of microcapsules. (2006-11-28)

UAB creates triple-threat cancer-fighting polymer capsules for guided drug delivery
Chemists have designed triple-threat cancer-fighting polymer capsules that bring the promise of guided drug delivery closer to preclinical testing. These multilayer capsules show three traits that have been difficult to achieve in a single entity. They have good imaging contrast that allows detection with low-power ultrasound, they can stably and efficiently encapsulate the cancer drug doxorubicin, and both a low- and higher-power dose of ultrasound can trigger the release of that cargo. (2017-03-30)

Immune-repelling protein prolongs function, survival of human stem-cell-derived beta cells
Encapsulating human stem-cell-derived beta cells in microcapsules made with an immune-cell-repelling protein restored glucose metabolism in diabetic mice and protected the cells from immune system attack, preventing the buildup of fibrotic tissue that has plagued previous trials of encapsulated beta cells. (2019-03-26)

'Biobullets' fight harmful mussels
British researchers have developed a (2006-01-31)

First international conference on self-healing materials
Scientific research into self-healing materials has taken off significantly worldwide in recent years. The Delft Centre for Materials of Delft University of Technology in the Netherlands has therefore taken the initiative to mount the first conference on the topic. From Wednesday, April 18, to Friday, April 20, leading scientists, including all the new discipline's renowned pioneers, will gather in the Palace Hotel in Noordwijk, the Netherlands, to present their findings during the First International Conference on Self-Healing Materials. (2007-04-13)

Mimicking biological systems, composite material heals itself
Inspired by biological systems in which damage triggers an autonomic healing response, researchers at the University of Illinois have developed a synthetic material that can heal itself when cracked or broken. (2001-02-13)

Making the invisible visible: Color-changing indicators highlight microscopic damage
Damage developing in a material can be difficult to see until something breaks or fails. A new polymer damage indication system automatically highlights areas that are cracked, scratched or stressed, allowing engineers to address problem areas before they become more problematic. (2016-01-14)

Still paying for broken smartphone display? Now, It is automatically fixed
Smartphone display repair cost that caused so many people to cry about, it may no longer be an issue to worry about. Research team in South Korea has developed a smartphone display material that can self-heal from damages. (2020-12-17)

Medical microspheres provide precision-release drug delivery
The elusive goal of controlling the release rate of encapsulated compounds for the precise delivery of drugs over a prolonged period is finally within reach. University of Illinois researchers have developed a method for making drug-encapsulated, biodegradable polymer microspheres that provides precise control over sphere size and shell thickness. (2002-04-09)

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