DR. MARK EDMUND PESSA, M.D.

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This study looked at how well babies recover hand function after surgery for a condition called complete neonatal brachial plexus palsy, which can affect arm and hand movement. Out of 19 babies who had nerve surgery at an average age of 3.7 months, 11 babies (or 57.8%) showed significant hand function improvement, allowing them to use their hands for tasks with two hands. This is important because it highlights that many infants can regain useful hand function after surgery, which can improve their quality of life and ability to participate in everyday activities. Who this helps: This research benefits infants with brachial plexus injuries and their families, as well as the doctors treating them.

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This study looked at how well eight children with a condition that weakens their arm function (neonatal brachial plexus palsy) performed tasks with their hands after undergoing surgery to improve their biceps muscle control. After an average of about 8 years following surgery, most children showed good hand function, with five scoring the highest possible points on a hand function grading system. This is important because it shows that transferring nerves from other areas to help the biceps doesn't lead to further hand problems and can improve overall function in children. Who this helps: This helps children with neonatal brachial plexus palsy and their families.

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Researchers developed a new, simpler way to create tiny patterns using laser technology, eliminating the need for complicated processes or materials. They successfully created a pattern of holes smaller than 30 nanometers in a material called GaAs, which were covered with silicon dioxide bubbles. This advancement is important because it can lead to faster and cheaper manufacturing of nanoscale devices used in electronics and optics. Who this helps: This helps manufacturers and researchers in technology and electronics.

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This study looked at how a small electric current changes when pressure is applied to a material called gallium arsenide at the nanoscale. Researchers discovered a sudden spike in electrical current when the material was deformed, which was new and not seen before in similar experiments, indicating that a phase change might be at the core of how the material behaves under pressure. Understanding this behavior is important because it challenges existing theories and could guide better materials design in electronics. Who this helps: This benefits researchers and engineers working on semiconductor materials and electronics.

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Researchers developed a fast and affordable technique to create tiny gold structures called nanocones, which have very sharp tips averaging 5 nanometers wide. These sharp tips significantly boost a process called second-harmonic generation by more than 100 times compared to smooth surfaces. This finding is important because it can lead to improved applications in sensors and optical devices, making them more efficient. Who this helps: This benefits researchers and engineers working in optics and sensor technology.

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This study explored a new method to create templates for nanoimprint lithography, which is a technique used to make very tiny patterns on surfaces. The researchers successfully produced patterns with a width as small as 20 nanometers, allowing for more precise and cost-effective template fabrication compared to traditional methods. This advancement is important because it can lead to improved technologies in areas like ultra-dense data storage and cutting-edge materials. Who this helps: This benefits researchers and industries working on advanced technology and materials.

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This research studied unique surface structures on materials called GaAs and InP, which are important in electronics. The researchers discovered unusual (2x1) patterns that don't follow typical rules for how electrons are arranged, with specific structures made of bismuth (Bi) atoms. They found that these patterns are stabilized by reducing stress in the materials, which is crucial for improving the performance of electronic devices. Who this helps: This helps engineers and scientists working on advanced electronic devices.

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This study focused on a new type of fiber designed for high-power laser applications. Researchers created a tapered fiber that shows impressive performance, achieving an output power of 84 watts with a high efficiency of 92% when using a specific type of Ytterbium ion. This advancement is important because it allows for more efficient and powerful laser systems, which can be useful in various industries such as medical technology and manufacturing. Who this helps: Patients and doctors who rely on advanced laser technologies for treatments and procedures.

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This study looked at a special type of laser that produces red light at a wavelength of 615 nm. Researchers created a semiconductor disk laser that reached a maximum power of 172 mW when emitting this red light, and when two outputs were combined, they achieved 320 mW. This development is important because it could improve applications in medical imaging and phototherapy, where precise and powerful light sources are needed. Who this helps: Patients undergoing therapies that require red light treatment.

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This study focused on a new type of powerful laser that can produce light at two different wavelengths simultaneously. Researchers achieved output powers of 0.75 watts at a wavelength of about 966 nanometers and 1.38 watts at around 1047 nanometers when using a pump power of 21.2 watts. This advancement is important because it could lead to better laser technologies for various applications, including medical and industrial uses. Who this helps: This benefits researchers and engineers working on advanced laser applications.

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Researchers developed a powerful red laser that can operate continuously, producing an output power of 0.4 watts. This laser emits a very precise and focused beam of light that can be adjusted to different wavelengths within a range of 10 nanometers. This finding is important because it opens up new possibilities for high-precision applications in areas like medical imaging and communication technologies. Who this helps: This benefits medical professionals and researchers needing high-quality laser systems for diagnostics and treatments.

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This research focused on a new type of laser chip that emits red light, demonstrating its ability to work in a group of lasers rather than just one. They found that by using special pumping techniques, the chip could produce up to 330 milliwatts of power for one beam and around 95 milliwatts per beam when operating as a three-beam array. This is important because it shows that these lasers can be efficiently controlled and arranged, which could lead to improvements in applications such as lighting, displays, and medical equipment. Who this helps: This benefits patients and doctors by improving diagnostic and treatment technologies that use laser technology.

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This study looked at a new type of semiconductor that can improve lasers used in fiber optics, specifically one that operates at a wavelength of 1.55 micrometers. Researchers created an advanced mirror using a specialized material (GaInNAs) that effectively locks the laser's mode, which is important for producing stable and high-quality laser beams. This innovation is significant because it enhances the efficiency and potential applications of lasers in communications and medical devices. Who this helps: This benefits engineers and scientists working on fiber optic technology and medical applications.

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This research focused on developing a new type of reflector that helps high-power lasers create short laser pulses. The team created a reflector that can be adjusted to different wavelengths and successfully achieved output powers up to 20 watts with pulse lengths of just 22 picoseconds. This is important because it can improve the efficiency and performance of laser systems used in various applications, such as in medical devices and telecommunications. Who this helps: This benefits researchers and engineers working with high-power laser systems.

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The study looked at how a specific protein important for fat metabolism changes in dairy cows during the time they produce milk. Researchers found that levels of the protein were much lower early in lactation, which led to an increase of fat in the cows' livers. This is important because it could affect the health and productivity of dairy cows during milk production. Who this helps: This helps dairy farmers and veterinarians.

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This study looked at what happens when patients who had a jejunoileal bypass surgery for severe obesity experience complications and need a different procedure. It found that switching to Roux-Y gastric bypass helped most patients control their weight well, while switching to gastric partition often led to weight gain similar to just reversing the original surgery. This is important because it shows that Roux-Y gastric bypass is a better option for patients with issues from the jejunoileal bypass. Who this helps: This helps patients struggling with weight loss after a failed jejunoileal bypass.