Nina Munteanu

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Power to the Tiny: Nanogenerators Scavenge Energy

January 29, 2008

So nat’ralists observe, a flea
Hath smaller fleas that on him prey,
And these have smaller fleas that bite ‘em,
And so proceed ad infinitum
.”
—Johnathan Swift

The miniscule devices that fall under the title of nanotechnology have huge potential, so long as they can utilize a power source better than a battery. The successful nanotech product will rely on its ability to scavenge “waste energy” ad infinitum (as Jonathan Swift would have said). In a recent article in the Scientific American (January, 2008), Zhong Lin Wang (Director of the Centre for Nanostructure Characterization, Georgia Institute of Technology) gives the example of the 1920’s watchmaker who invented the self-winding watch. Mechanically harvesting energy from the wearer’s moving arm and putting it to work rewinding the watch was a brilliant concept. This so called “waste energy” may appear in the form of vibrations, (even human pulse), acoustic waves, temperature differences, etc.

With the ability to make power on a minuscule scale, we can entertain the notion of a myriad of miraculous achievements like: implantable biosensors that continuously monitor a patient’s blood glucose levels; autonomous strain sensors for bridges, or environmental sensors to detect toxins. This would only work if replacement batteries weren’t needed. Enter the nanogenerator, a very small energy harvester of “waste energy” that supplies electrical power to a nanoscale device. Wang’s nanogenerators consist of an array of vertical zinc oxide nanowires, hexagonal crystals with both piezoelectric and semiconducting properties. An electrode with a ridged underside sits atop the nanowires and moves from side to side in response to some vibration (the human pulse or acoustic waves). As they move from side to side, the piezoelectric nanowires develop a voltage from the compressive and tensile strains on their sides. The semiconductor nanowires and conductive electrode rectify the alternating voltage and release it as direct current.

The body produces a variety of sources for “waste energy” that nanogenerators can tap into. For instance, blood flow produces 0.93 watts of mechanical energy (0.16 W electrical energy); exhalation produces 1.0 W of mechanical energy; walking produces 67.0 W of mechanical energy; and my fingers typing this blog post produce from 6.9 to 19.0 milliwatts of mechanical energy. Okay, that actually isn’t a lot of energy. But nanogenerators don’t need to power our homes. But in the future, nanogenerators may be used to harvest and recycle the energy wasted in our daily lives.

References:
Ghalanbor Z, Marashi SA, Ranjbar B. 2005. “Nanotechnology helps medicine: nanoscale swimmers and their future applications”. Med Hypotheses 65 (1): 198-199. PMID 15893147.

Wang, Zhong Lin. 2008. Self-Powered Nanotech. In: Scientific American, January 2008.
Waldner, Jean-Baptiste .2007. Nanocomputers and Swarm Intelligence. ISTE, p26. ISBN 1847040020.


The Illustrations of Tomislav Tikulin

January 19, 2008

He’s one of the brightest stars in the fantasy and science fiction world. His digital art evokes vivid yet fantastical landscapes that transport your mind and elevate your soul. Croatian illustrator, Tomislav Tikulin, is my Friday Feature.

Tikulin, who was born and lives in Zagreb, Croatia, recently confided in me that he had never been to North America. I find this ironic, considering that his art is showcased internationally, having appeared in every country imaginable. Tomislav Tikulin’s art work has graced the covers of many SF and Fantasy books including Chris Robertson’s Voyage of Night Shining White, Arthur C. Clarke’s Rendezvous With Rama, and recently Ray Bradbury’s Dandelion Wine (50th anniversary edition).

Tikulin creates convincing images grounded in reality then throws them into fantastical alien landscapes. Many of his pieces evoke a sense of yearning within a grand tapestry of his imagination. Through the use of lighting, tone, filigree and color, Tikulin infuses his imagery with mood and “motion”. His art flows with a tender ache for “more”… a call to adventure…a hero’s mythic journey…a sweeping vision of the future…a whole world to discover…

When Tikulin agreed to illustrate my book, Darwin’s Paradox, I was ecstatic and honored. After some conversation back and forth, he produced the striking image you all know. It has, I can assure you, been one of the main reasons people have picked up my book off the bookshelves.

Eager to meet the man responsible for the success of my book, I notified Tikulin that I would be in Zagreb, refueling, and invited him aboard my sentient ship, Vinny, for a drink. To my delight, he readily and intrepidly agreed.

Like all his predecessors, Tikulin rode the crystal beam with the ease and the sublime frisson of a Ray Bradbury character. He didn’t get sick either, I observed, as my stomach growled its typical objection. Like a giddy twelve-year old kid on his first rocket ship ride—wait, this probably was his first rocket ship ride—Tikulin asked a million questions and I had to bat his hand away from the colorful crystal controls several times. Humans! So curious!…

~~~~

Once we get on board Vinny, and thinking to put Tikulin at ease so I can better interroga—er interview him, I instruct Harry, my bot, to fetch us each a pint of Canadian beer, this time a Kokanee lager. As we settle into two comfortable chairs in the aft lounge with our beers, I make my move.

SF Girl: I lean forward and make direct eye contact with this good-looking Croatian from Zagreb and decide to start with something mild and innocuous. “So, when did you know that you wanted to be an illustrator and how did you get your start?”

Tikulin: He meets my gaze with intense laughing eyes of candor. There is something very genuine about him that sets me at ease and I realize that it’s me who is nervous; not him. Tikulin drains half of the beer in one long draught, leaving some foam on his upper lip, then begins in a strong Croatian accent, “Well, it happened a couple of years ago. I was involved in the production of a point and click adventure game. My job was to make backgrounds, matte paintings, etc.” In fact, he was Chief 2-D artist on the project. “I realized that I had learned a lot of things during that production and that I must do something with that knowledge.” Tikulin tilts his head to one side and ponders the past. “I also worked as a comic colorist for many years and had a promising career but I made a decision to do something else and that was a turning point for me…[After meeting] some publishers, that was the start of a new career,” he ends with a boyish laugh.

SF Girl: I decide that he’s getting a little too comfortable as he draws another long appreciative gulp of Canadian beer (maybe he doesn’t get out much, I conclude). Still… Thinking to stir him from his beer-induced contentedness, I pry, “What does your family think of your art?”

Tikulin: He throws his head back and guffaws. “Like any other normal family, they would be more than happy if I did something else… occupations like a lawyer, doctor, or just working in some nice and clean factory…”

SF Girl: Before I realize it, I’ve grown maudlin, reminiscing about my own parents’ wish that I’d chosen a normal career like planet-building engineer in the Zeta system (very lucrative work, I might add!) or an accountant with the Galactic Bank instead of the space-adventure scoundrel I’ve become… When I find him staring at me with those dark George Clooney eyes, I quickly regain my composure and ask, “What kind of things did you draw as a kid?”

Tikulin: He eases back into the soft chair, a loose smile sliding across his face that makes the thirty-two year old artist look like a boy. “As a kid I was drawing more or less the usual stuff…cowboys, Indians, spacemen, etc. I love movies, especially scifi movies…I spent many hours watching TV, maybe too much!” He flashes a grin then adds, “That was the trigger for me.”

SF Girl: “What is it about science fiction and fantasy that draws your interest, particularly to illustrate in these genres?”

Tikulin: “I love movies. I’m a movie geek. I watched a thousand times Alien, Blade Runner, original Star Wars Saga, Star Trek and other nice movies and series. I was hooked as a kid with fantastic landscapes, green slime aliens, space heroes and all sorts of villains.” So, he’d met some of my relatives, I conclude…Tikulin continues, “I like the old masters. I’m not a big fan of modern cyberpunk stories. My heart is full of sorrow because Hollywood doesn’t make Sci-Fi films like they used to.”

SF Girl: Totally disarmed by this gentle (and very good looking!) Croatian, I ask, “What’s next for Tomislav Tikulin?”

Tikulin: He flashes another of those wonderful boyish smiles. “To have fun, to make lots of covers, to make covers for Frank Herbert’s Dune, and one day to create production illustrations for a big Sci-Fi movie.”

I don’t doubt that he will. To see more of Tomislav Tikulin’s artwork or to contact him, here’s his website: http://www.tomtikulin-art.com/.

Segments of this interview were kindly borrowed from an interview in Ray Gun Revival, Issue 12 (2006), and incorporated into this one.


Review of “Solaris”—Book & Motion Picture

January 16, 2008

Steven Soderbergh’s stylish psychological thriller, released November 2002 in the United States by 20th Century Fox , eloquently captures the theme of Stanislaw Lem’s 1961 book. Written almost fifty years ago, “Solaris” is an intelligent, introspective drama of great depth and imagination that meditates on man’s place in the universe and the mystery of God.

Soderbergh’s “Solaris” is a poem to Lem’s prose. Both explore the universe around us and the universe within. Not particularly palatable to North America’s multiplex crowd, eager for easily accessed answers, “Solaris” will appeal more to those with a more esoteric appreciation for art.
When I saw the 2002 20th Century Fox remake of “Solaris” (released on DVD soon after), I was blissfully unaware of its legendary history. I say blissfully because I harbored no pre-conceived notions or expectations and therefore I was struck like a child viewing the Northern Lights for the first time. The stylish, evocative and dream-like imagery flowed to a surrealistic soundtrack by Cliff Martinez like the colors of a Salvadore Dali painting.

It was only later that I discovered that Russian experimental director, Andrei Tarkovsky, had previously filmed “Solaris” in 1972 based on Stanislaw Len’s masterful 1961 book of the same name. Reprinted by Harcourt, Inc. with a new cover featuring a sensual image from the 2002 film, the original book was translated in 1970 from the French version by Joanna Kilmartin and Steve Cox for Faber and Faber Ltd.

Written almost fifty years ago, “Solaris” is a dark psychological drama. Soderbergh faithfully captures the intellectual yet sensual essense of Lem’s book by tempering the language and movements. Featuring a fluid and haunting soundtrack, his film flows like a choregraphed ballet. There is a dream-like quality to the film that is enhanced by creative use of camera angles, unusual lighting, tones and contrast, and sparse language. “Solaris” is not an action film (no one gets shot, at least not on stage), yet the tension surges and builds to its irrevocable conclusion from frame to frame like a slow motion Tai Chi form.
In response to his friend’s plea, a depressed psychologist with the ironic name of Kris Kelvin (played with quiet depth by George Clooney), sets out on a mission to bring home the disfunctional crew of a research space station orbitting the distant planet, Solaris. Kelvin arrives at the space station, Prometheus, to find his friend, Gibarian, dead (by suicide) and a paranoid and disturbed crew, who are obviously withholding a terrible secret from him. It is not long before he learns the secret first hand: some unknown power (apparently the planet itself) taps into his mind and produces a solid corporeal version of his tortured longing: his beloved wife, Rheya (played sensitively by Natascha McElhone) who’d committed suicide years ago. Faced with a solid reminder, Kelvin yearns to reconcile with his guilt in his wife’s death and struggles to understand the alien force manifested in the form of his wife. He learns that the other crew are equally influenced by Solaris and have been grappling, each in their own way, with their “demons,” psychologically trapping them there.

Ironically, our hero’s epic journey of great distance has only led him back to himself. The alien force defies Kelvin’s efforts to understand its motives; whether it is benign, hostile, or even sentient. Kelvin has no common frame of reference to judge and therefore to react. This leaves him with what he thinks he does understand: that Rheya is a product of his own mind, his memories of her, and therefore a mirror of his deepest guilt ? but perhaps also an opportunity to redeem himself.

Lem packs each page of his slim 204 page book with a wealth of intellectual introspection. Through first person narrative, he intimately unveils the complicated influence of this arcane force on Kelvin. Lem explains it this way: “I wanted to create a vision of a human encounter with something that certainly exists, in a mighty manner perhaps, but cannot be reduced to human concepts, ideas or images.”

Such an incomprehensible entity would serve as a giant mirror for our own motives, yearnings and versions of reality. For me the contrast presented by such an arcane alien force emphatically — but also ironically — defines what it is to be human. It is only when faced with what we are not that we discover what we are. Later in the book, Kelvin cynically observes: “Man has gone out to explore other worlds and other civilizations without having explored his own labrynth of dark passages and secret chambers, and without finding what lies behind doorways that he himself has sealed.” In the film Gibarian sadly proclaims of the Solaris mission: “We don’t want other worlds – we want mirrors.”

Lem’s existentialist leaning is provided throughout the book and even alluded to in the name he chose for the space station: Prometheus. In Greek mythology, Prometheus stole fire from the gods and gave it to humankind for which Zeus chained him to a rock and sent an eagle to eat his liver (which grew back daily). It is interesting that Soderbergh chose to send Prometheus to a fiery crash and named Kelvin’s dead wife, Rheya, after the Greek goddess, mother of Zeus and all Olympian gods. In a late passage of Lem’s book, a devastated and sorrowful Kelvin formulates a personal theory of an imperfect god, “a god who has created clocks, but not the time they measure . . . a god whose passion is not a redemption, who saves nothing, fulfills no purpose ? a god who simply is.”

Soderbergh addresses Lem’s existential vision with several brief but pivotal scenes. One occurs when Kelvin’s dead friend, Gibarian, returns to him in a dream on Prometheus and responds to Kelvin’s question, “What does Solaris want?” with: “Why do you think it has to want something?” Another scene occurs as a flashback to a dinner on Earth, when the real Rheya, prior to her suicide, argues with both Gibarian and her own husband about the existence of an all-knowing purposeful God, which both men argue is a myth made up by humankind: to Kelvin’s suggestion that “the whole idea of God was dreamed up by man,” Rheya insists that she’s “talking about a higher form of intelligence,” to which Gibarian cuts in with: “No, you’re talking about a man in a white beard again. You are ascribing human characteristics to something that isn’t.” Kelvin fuels it with: “we’re a mathematical probability,” which prompts Rheya’s challenge: “how do you explain that out of the billions of creatures on this planet we’re the only ones conscious of our immortality?” Neither man has an answer. Gibarian later commits suicide on Solaris rather than deal with the manifestation of his conscience. And I can’t help but wonder if the underlying reason for his inability to reconcile with his “demon” is because he was unequipped to, given his nihilistic beliefs.

Gibarian also tells Kelvin (and we must remember that all this is Kelvin really saying this to himself through his memory of the character): “There are no answers, only choices.” It is interesting then that the first pivotal choice in the story is made by the doppelganger Rheya (also a manifestation of Solaris but a mirror of Kelvin’s own mind) and it is a choice made out of love: to be annihilated, rather then serve as an instrument of this unknown alien power to study the man she loves.

Some critics have called Soderbergh’s “Solaris” pretentious, boring and devoid of action and intimacy. I strongly disagree. It is simply that, as with Lem’s original story, Soderbergh’s “Solaris” does not surrender its messages easily. The viewer, as with the reader, must intuitively feel his or her way through the fluid poetry, free to interpret and ponder the questions. This is what I think good art should do. And I feel both the original book and Soderbergh’s movie do this with enthralling brilliance.

Where Soderbergh and Lem depart lies more in each artist’s personal vision and belief. We are defined by the questions we ask and Lem asks a great deal of questions. Whether the forces that drive our universe are best defined by current science and the mind as random without purpose or as the manifestation of arcane motive more readily known through spirituality and the heart is largely a matter of belief.

Reviewer, Rick Kisonak, asserted that Lem’s “novel is an icy meditation on man’s place in the universe and the mystery of God. It poses countless metaphysical questions and makes a point of answering none of them. In Soderbergh’s hands, however, ‘Solaris’ becomes a celebration of romantic love, which culminates in the revelation of a caring, forgiving creator. At the end of his book, Lem writes [Kelvin ponders]: ‘the age-old faith of lovers and poets in the power of love, stronger than death, that finis vitae sed non amoris [life ends but not love] is a lie, useless and not even funny.’ The director ignores the author in favor of just such a poet.” Kisonak is referring here to Rheya’s interest in Dylan Thomas and its reference throughout the movie. Another reviewer, Dennis Morton, goes so far as to suggest that the screenplay of “Solaris” is the first stanza of the poem, which ends with: “…though lovers be lost love shall not; And death shall have no dominion.”

While I agree with some of Kisonak’s reasoning, I think he has missed the point of Lem’s book. If one continues to read from the passage Kisonak quoted above ? as Kris Kelvin transcends from what he “thinks” in his intellect to what he feels and “knows” in his heart, to accept his (and humanity’s) destiny with humble fatalism ? we learn that Lem ends his book in much the same way as Soderbergh’s movie: life ends but not love. The endings are physically different, in keeping with some radical alterations from the book in the movie’s setting (e.g., the original Solaris station is located on the planet and Lem assiduously describes Kelvin’s observations and interactions with the alien ocean; whereas Soderbergh’s crew virtually never leave orbit and the planet remains aloof in the background, reflecting Soderbergh’s focus). Yet, Kris makes the same choice in faith and love in both book and movie (although the choices play out differently).

In matters of faith and love, here is what Kris has to say in the book: “Must I go on living here then, among the objects we both had touched, in the air she had breathed? . . . In the hope of her return? I hoped for nothing. And yet I lived in expectation . . . I did not know what achievements, what mockery, even what tortures still awaited me. I knew nothing, and I persisted in the faith that the time of cruel miracles was not past.” In the end of both movie and book, Kris Kelvin lets go of his fears and lets his spirit rise in wonder at what astonishing things Solaris (and the universe) will offer next.

In the final analysis, both book and movie are incredibly valuable but for different reasons. Soderbergh paints an impressionistic poem, using Kafkaesque brushstrokes on a simpler canvas, to Lem’s complex tapestry of multi-level prose. Lem challenges us far more by refusing to impose his personal views, where Soderbergh lets us glimpse his hopeful vision. I think that both, though, come to the same conclusion about the ethereal, mysterious and eternal nature of love.
On the one hand, love may connect us within a fractal autopoietic network to the infinity of the inner and outer universe, uniting us with God and His purpose in a collaboration of faith. On the other hand, love may empower us to accept our place in a vast unknowable and amoral universe to form an island of hope in a purposeless sea of indifference.

Whether love mends our souls to the fabric of our destiny; enslaves us on an impossible journey of desperate yearning; or seizes us in a strangling embrace of unspeakable terror at what lurks within ? surely, then, love IS God, in all its possible manifestations. This is unquestionably the message that unifies book and movie. And it is one worth proclaiming.

A form of this review was previously published in the Internet Review of Science Fiction Vol I, No. 4 (2004)