TAU researchers adapt microscopic technology for bionic body parts and other medical devices
Tiny sensors and motors are everywhere, telling your smartphone screen to rotate and your camera to focus. Now, a team of researchers at Tel Aviv University has found a way to print biocompatible components for these micro-machines, making them ideal for use in medical devices, like bionic arms.
Microelectromechanical systems, better known as MEMS, are usually produced from silicon. The innovation of the TAU researchers — engineering doctoral candidates Leeya Engeland Jenny Shklovsky under the supervision of Prof. Yosi Shacham-Diamand of theSchool of Electrical Engineering and Slava Krylov of the School of Mechanical Engineering — is creating a novel micro-printing process that works a highly flexible and non-toxic organic polymer. The resulting MEMS components can be more comfortably and safely used in the human body and they expend less energy.
A two-way street
As their name suggests, MEMS bridge the worlds of electricity and mechanics. They have a variety of applications in consumer electronics, automobiles, and medicine. MEMS sensors, like the accelerometer that orients your smartphone screen vertically or horizontally, gather information from their surroundings by converting movement or chemical signals into electrical signals. MEMS actuators, which may focus your next smartphone’s camera, work in the other direction, executing commands by converting electrical signals into movement.
Both types of MEMS depend on micro- and nano-sized components, such as membranes, either to measure or produce the necessary movement.
For years, MEMS membranes, like other MEMS components, were primarily fabricated from silicon using a set of processes borrowed from the semiconductor industry. TAU’s new printing process, published in Microelectronic Engineering and presented at the AVS 59th International Symposium in Tampa, FL, yields rubbery, paper-thin membranes made of a particular kind of organic polymer. This material has specific properties that make it attractive for micro- and nano-scale sensors and actuators. More importantly, the polymer membranes are more suitable for implantation in the human body than their silicon counterparts, which partially stems from the fact that they are hundreds of times more flexible than conventional materials.
The unique properties of the polymer membranes have unlocked unprecedented possibilities. Their flexibility could help make MEMS sensors more sensitive and MEMS motors more energy efficient. They could be key to better cameras and smartphones with a longer battery life.
Giving patients a hand
But the printing process may deliver the biggest jolt to the field of medicine, where polymer membranes could be used in devices like diagnostic tests and smart prosthetics. There are already bionic limbs that can respond to stimuli from an amputee’s nervous system and the external environment, and prosthetic bladders that regulate urination for people paralyzed below the waist. Switching to MEMS made with the polymer membranes could help make such prosthetics more comfortable, efficient, and safer for use on or inside the body.
The Latest on: Micro-Machines for the Human Body
- Self-powered micro-submarines sink and swim to deliver drugs in the bodyon May 28, 2019 at 9:18 pm
An illustration of micro-submarines that could deliver drugs inside the body(Credit: UNSW) It's entirely possible that micro-machines could one day be delivering ... to be done to get these up to ... […]
- Micro-Submarines Could Deliver Medicine in the Body Without Surgeryon May 28, 2019 at 11:03 am
Human bodies are mostly water-based, after all, and the body expends a considerable amount of energy, keeping those pH levels within a healthy range. The micro-machines would self-adjust their pH ... […]
- Phone Sensors Could Meld with Human Bodyon September 13, 2013 at 4:48 am
But now researchers have devised a way to print highly flexible parts for these micro-machines from a rubbery, organic polymer more suitable for implantation in the human body than is silicon. [7 Cool ... […]
- New Worlds: Micro-machines for the human bodyon August 17, 2013 at 7:36 pm
As you can imagine, more people are reading The Jerusalem Post than ever before. Nevertheless, traditional business models are no longer sustainable and high-quality publications, like ours, are being ... […]
- Micro-machines for the human bodyon August 15, 2013 at 12:30 pm
Tiny sensors and motors are everywhere, telling your smartphone screen to rotate and your camera to focus. Now, a team of researchers at Tel Aviv University has found a way to print biocompatible ... […]
- Micro-machines for the human bodyon August 7, 2013 at 6:19 am
TAU researchers adapt microscopic technology for bionic body parts and other medical devices Tiny sensors and motors are everywhere, telling your smartphone screen to rotate and your camera to focus. ... […]
- Micro-machines for the human body: Researchers adapt microscopic technology for bionic body parts and other medical deviceson August 6, 2013 at 5:00 pm
American Friends of Tel Aviv University. (2013, August 7). Micro-machines for the human body: Researchers adapt microscopic technology for bionic body parts and other medical devices. ScienceDaily. ... […]
via Google News and Bing News