Buzz
It's difficult to imagine a future without the influence of nanotechnology. The ability to manipulate matter at atomic and molecular scales has unlocked revolutionary advances in chemistry, biology, and medicine. But the potential applications of nanotechnology extend far beyond what we have yet conceived.
10. Filmmaking
The invention of the scanning tunneling microscope (STM) in the 1980s was a pivotal moment for nanotechnology, transforming it from a concept of science fiction into a practical reality. With its ability to manipulate atoms with extreme precision, STM allowed physicists to explore the structure of matter in ways that were previously unthinkable with traditional microscopes.
The true capabilities of STM were showcased by IBM researchers when they created A Boy and His Atom, the world’s tiniest animated film, made by positioning individual atoms on a copper surface.
The 90-second film showcases a boy made from carbon monoxide molecules engaging in various activities like playing with a ball, dancing, and bouncing on a trampoline. Comprised of 202 frames, the animation takes place in a space so small that it is 1/1000 the width of a single human hair. To create this unique film, researchers utilized the STM’s special feature: a sharp, electrically charged stylus with a tip made of just one atom. This tool can pinpoint the exact positions of the carbon molecules on the animation surface, which in this case is a copper sheet. This precision allows the creation of images and the movement of the molecules into new positions.
9. Oil Recovery
Over the past decade, global spending on oil exploration has skyrocketed. Yet, oil recovery efficiency remains a significant challenge. When an oil well is decommissioned, less than half of the oil in the reservoir is typically extracted. The remaining oil gets trapped in the rock, making it too costly to recover. However, scientists in China have found a way to address this issue using nanotechnology.
The breakthrough lies in enhancing an existing drilling technique. This method involves injecting water into the rock’s pores where oil is stored. The water displaces the oil, pushing it out. However, this process has its limitations. Once the oil from the easily accessible pores is extracted, the water starts to emerge from the well instead of oil.
To address this issue, Chinese researchers Peng and Ming Yuan Li have proposed adding nanoparticles to the water, which can block the gaps between rock pores. This technique is designed to guide the water through narrower channels that contain oil, forcing the oil to the surface. Field tests in China have shown that this method is remarkably effective, enabling the recovery of up to 50 percent of the oil that would otherwise remain inaccessible.
8. High-Resolution Displays
Computer screens display images through tiny dots known as pixels. The quantity of pixels, no matter their size or shape, has traditionally been a key factor in determining image quality. However, with conventional displays, increasing the number of pixels meant larger, bulkier screens—an obvious drawback.
While companies were focused on selling enormous screens, scientists at Oxford University made a breakthrough by creating pixels that measure only a few hundred nanometers across. This was accomplished by utilizing the properties of a phase-change material called GST (commonly found in thermal management products). In their experiment, the researchers used GST layers just seven nanometers thick, sandwiched between transparent electrodes. Each layer, only 300 by 300 nanometers in size, functions as a pixel that can be turned on or off with electricity. By passing current through the layers, the scientists successfully produced images with good quality and contrast.
Nano-pixels are set to serve a wide range of functions where traditional pixels have become unfeasible. Their minuscule size and thickness make them ideal for emerging technologies like smart glasses, foldable displays, and synthetic retinas. Additionally, nano-pixel displays offer the advantage of lower energy consumption. Unlike conventional displays, which continuously refresh all pixels to create images, the GST-layer-based displays only refresh the areas that change, thus conserving power.
7. Color-Changing Paint
While experimenting with gold nanoparticle strands, scientists at the University of California made a remarkable discovery: the color of gold changes when its particle chain is stretched or compressed. The result is a stunning spectrum that begins as bright blue, shifts to purple, and eventually turns red. This observation led the researchers to develop sensors using gold nanoparticles that change color when pressure is applied.
To create these sensors, gold nanoparticles are incorporated into a flexible polymer film. When pressure is applied, the film stretches, causing the particles to move apart and the color to change. A light press turns the sensor purple, while a firmer press shifts it to red. The scientists also observed a similar phenomenon in silver particles, which turn yellow when stretched.
These sensors could have a wide range of applications. For example, they could be integrated into furniture like couches or beds to monitor sitting or sleeping positions. Despite being made from gold, the sensor is small enough to overcome the cost issue.
6. Phone Charging
Every smartphone, whether it's an iPhone, Samsung, or another model, comes with two well-known drawbacks: battery life and the time it takes to recharge. While the first issue remains a common challenge, researchers from Ramat Gan, Israel, have found a solution to the second by developing a battery that charges in just 30 seconds.
This breakthrough was the result of an Alzheimer's research project conducted by researchers at the University of Tel Aviv. They discovered that peptide molecules, which shorten the brain’s neurons and contribute to the disease, possess a very high capacitance (the ability to retain electric charges). This insight laid the foundation for StoreDot, a company focusing on nanotechnology for consumer products. With the help of researchers, StoreDot developed NanoDots, a technology that utilizes the peptides’ properties to enhance smartphone battery life. The company demonstrated a prototype of this battery at Microsoft’s ThinkNext event, where it charged a Samsung Galaxy S3 phone from 0% to full in less than a minute.
5. Advanced Drug Delivery Systems
Treatments for serious diseases, such as cancer, can be unaffordable and sometimes come too late. Thankfully, many medical companies worldwide are working on cost-effective and efficient solutions for treating such conditions. One of these companies, Immusoft, is on a mission to revolutionize how we deliver medicine to our bodies.
Rather than pouring billions into drugs and therapy programs, Immusoft proposes that we can redesign our bodies to produce their own drugs. With the help of the immune system, a patient’s cells can be modified to accept new genetic instructions that enable them to generate their own medicine. These instructions are delivered by nano-sized capsules injected into the body.
Although this method has not yet been tested on human patients, Immusoft and other research institutions have reported successful trials on mice. If this approach proves effective in humans, it could dramatically lower the costs associated with treating cardiovascular diseases and a wide range of other conditions.
4. Molecular Communication
In certain scenarios, electromagnetic waves, which are the backbone of global telecommunication, can become unusable. For example, a powerful electromagnetic pulse could disable communication satellites and any technology dependent on them. While such catastrophic events are often depicted in apocalyptic movies, researchers from the University of Warwick in the UK and York University in Canada have long considered this issue and found an unexpected solution.
The researchers studied how some animals, especially insects, use pheromones to communicate over great distances. Using this insight, they developed a new method of communication, encoding messages in the molecules of evaporated alcohol. Their first demonstration of this technique involved using rubbing alcohol as the signaling substance and transmitting the message 'O Canada.'
The process relies on two devices: a transmitter to encode and send the message, and a receiver to decode and display it. The transmitter, using an Arduino Uno microcontroller with an LCD screen and buttons, converts the text into a binary sequence. This sequence is then sprayed in a controlled pattern—'1' for a spray, '0' for no spray—by an electronic sprayer. The receiver, equipped with a chemical sensor and microcontroller, detects the alcohol and decodes the binary data back into text, which is then shown on a screen.
The researchers successfully transmitted and received the 'O Canada' message over several feet of open space. This success has inspired confidence in many scientists, who believe this method could prove valuable in environments where electromagnetic waves cannot be used, such as underground tunnels or pipelines.
3. Record Breaking
Throughout history, humanity has always strived to build the largest, fastest, and strongest things. Yet, when it comes to creating the smallest objects, nanotechnology takes center stage. One of the smallest creations made using nanotech is a book titled 'Teeny Ted From Turnip,' which holds the title of the world's smallest printed book. Produced at Simon Fraser University’s Nano Imaging Laboratory in Vancouver, Canada, this book is just 70 micrometers by 100 micrometers in size and contains letters etched on 30 crystalline silicon pages.
Written by Malcolm Douglas Chaplin, the book’s story follows Teeny Ted as he wins the turnip contest at the annual county fair. More than 100 copies of the book have been made, though each copy comes with a hefty price tag—over $15,000. To read the book, you’ll need an electron microscope, adding even more to the cost.
2. Nano Art
Nanotechnology’s rapid advancements have sparked significant excitement within the scientific world. However, its potential isn’t limited to fields like medicine, biology, and engineering. One such exciting new domain is nano art, which offers a fresh way to explore the microscopic world through a creative lens.
Nano art combines the realms of art and nanoscience and is practiced by a select group of scientists and artists. One prominent figure in this field is John Hart, a mechanical engineer from the University of Michigan, who created a nano portrait of President Barack Obama. Named Nanobama, the portrait was crafted to celebrate the President’s candidacy during the 2008 elections. Each face in the portrait is a mere half millimeter in size, sculpted entirely from 150 nanotubes. Hart first sketched a line drawing of the famous 'Hope' poster, which he printed onto a glass plate covered with the necessary nanoparticles. Using a high-temperature furnace, the final portrait was carefully created and then ready for its photo shoot.
1. Computer Storage
Over the past few decades, computers have experienced a remarkable surge in both processing power and storage capacity. This growth aligns with a prediction made by James Moore about 50 years ago, which eventually became widely known as Moore’s Law. However, many experts, including physicist Michio Kaku, believe that Moore’s Law may be reaching its limits. They argue that the rapid advancements in computer power are now outpacing the capabilities of current manufacturing technologies.
While Kaku’s concerns focus on processing power, the same issues apply to storage capacity. Fortunately, this isn’t the final frontier. A research team from RMIT University in Melbourne, led by Dr. Sharath Sriram, is exploring alternatives. They are developing storage devices inspired by the human brain’s information storage methods. The team’s first breakthrough involved creating a nano film capable of retaining electric charges in both 'on' and 'off' states. This film, which is 10,000 times thinner than a human hair, could lay the foundation for memory devices that mimic the brain’s neural networks.
